Tide Tool 9.2 Manual V2.0 - University of Hawaii Sea Level Center
Contents
1. M N a Monite o k MAP izd A Monitor td MAP PRINT 4 Bey oo Eoi Z LEBU Gauge PRS Monitoi 0x LIN A me n 20 20 06 27 20 20 naza __ J nasan nazan O BMSA Pe PRS M Monito 0 x 5 S Monito 0 menu pesee map erie _MaP PR AAA 14 07 04 00 17 53 T PCHA Gauge PRS Monito Ol menu DESPIKE mar enw _ext e asa a 03719 09 13 05720 09 20 o TIME UTC Next XMT 01 18 dgal menu vor pespike map 20 09719 09720 EEJ men men ara REM aea Clicking SHOW will bring up a menu with two options for m monitor widgets for stations within the zoom widget These are TILE which was available in previous releases and STRIP which will arrange the monitor widgets in a stripchart Clicking TILE will tile the screen with all stations that have data present in the zoom region see figure above The TILE option will then switch to UNTILE Clicking UNTILE will remove the tiled widgets Client version 2 x supports multiple zoom widgets In previous versions of the Client creating zoom widget would cause any pre existing zoom widget to disappear The zoom widgets keep track of what stations exist in the zoom region independently If you have multiple workspaces you can tile each workspace independently using a different zoom widget Alternatively2. Observed Tide Only Corrected Tide Only With Predicted Tide 03 00 22 53 05 24 05 24 TIME UTC Next XMT 07 33 beno prs Two curves are in the display The red curve is the sea level curve resulting from decoding the sea level messages The black curve is the de tided sea level curve using a tide prediction model The tide coefficients are computed by Dr Dailin Wang at PTWC In some cases the available time series for the newer stations are too short to allow rigorous de tiding However the bulk of the tide signal is usually eliminated In the above figure the TIDE menu button has been clicked and it shows 4 options The default is to plot both the observed and corrected tides Other options are to show the observed or corrected separately or both with the predicted tide On the bottom of the display the time of the next expected transmission Next XMT for this station is given UZ Z Clicking the MENU button produces a i 7 eee menu showing other sensors for this Paced station Mess n This way you won t have to go to the main GUI to display curves for the other sensors Another feature is the DESPIKE button Clicking the DESPIKE button will run the sea level curve through a three point median filter Basically at each point the value is replaced with the median value amongst that point and its nearest neighbors This gets rid of solitary bad points For spikes glitches lasting more than one s
3. data ttt_dbase geoware maps 6 tilelistfile This specifies the name of a file which contains station sensor code pairs After Tide Tool is finished with its initial read of the logfile after startup it will automatically tile the screen with displays corresponding to those stations An example from PTWC s implementation is set tilelistfile home stuart Tide Tile_List 7 record_filename You can now record measurements of sea level heights and those measurements will be written to the file specified by record_filename An example from PTWC s implementation is set record_filename observations 8 error_log Messages with bad time stamps improper formats and unrecognized headers will be written to the file specified by error_log An example from PTWC s implementation is set error_log Error_log The actual logfiles will be error_log jd where jd is Julian Day 9 printer_command Tide Tool stores the latest 100 messages from each tide station These messages are viewable and can be made printable if the variable printer_command is set to the local system s printer command An example from my implementation is set printer_command enscript fCourier Bold8 2 gt dev null 10 TWC_DART FORMAT If this is set to 1 Tide Tool will write the decoded DART data files using the same format as does PTWC An example of that format is given below File 55015_nha_2008 235 The filename
4. 0645 0645 0644 0644 0644 0644 0644 e 644 0643 0644 0644 0644 0643 0643 0643 0642 0642 0643 0644 1133 1133 1132 sibo 047 048 097 132 1132 1131 1131 1131 1131 1131 1131 1130 1130 1129 1130 1130 1130 1130 teda 047 048 097 129 1129 1129 1128 1129 1130 0664 0662 60 60 0000 13 39 13 60 13 27 bitg 048 048 100 pas pada 048 048 100 ShPAA1 RITD 160041 0644 0643 0644 0644 0644 0643 0643 0643 0642 0642 0643 0644 saum 048 048 100 _ 0644 0643 0642 0642 0643 0644 0644 0643 0643 OI 129 1130 daak 047 148 097 1130 1130 1130 1129 1129 1429 1128 1129 1130 1130 1129 1129 1128 1129 1130 1130 1130 1130 1130 1130 1131 0662 0663 60 60 00 00 13 60 13 27 13 25 lobk 047 048 097 13 30 waik 048 048 100 chrs 238 240 099 WPA41 RITD 160053 0644 0643 0642 0642 0643 0644 0644 0643 0643 0643 0644 0644 dind 300 002 000 064a 0643 0641 0641 0642 0643 0642 0640 0640 0640 0641 0641 1130 1129 1129 1128 1129 1130 1130 1130 1130 1130 1130 1131 1130 1129 1128 1128 1129 1129 djvw 000 002 o00 1128 1126 1127 1127 1128 1128 0663 0661 6060 00 00 13 27 13 djve 004 002 200 13 115 Kone pee ma Epas SwPAdt RITD 160105 0644 0643 0641 0641 0642 0643 0642 0640 0640 0640 0641 0641 komi 000 048 0004 0641 0639 0637 0635 0634 0634 0634 0 1130 1129 1128 lang 048 048 100 1128 1128 1129 1128 1126 1127 1127 1128 1128 1127 1125 1124 1124 1124 1124 tanp 038 040 095 4122 1120 1120 1120 1120 1120 0661 0654 60 60 00 00 13 67 13 65 13 11 coco O11 012 091 13 44 coch 231 240 096 SWPA41 RITD 160117 06
5. If so it is decoded Once started Tide Tool runs continuously The station name is listed as a four letter code The stations codes are obtained from the metadata file The gauge code is only three letters prs stands for pressure sensor bub indicates bubbler enc indicates encoder rad indicated radar etc More information on the gauge types can be found in Appendix IV which is extracted from the PTWC Operations Systems and Procedures Manual Version 1 0 Dec 2008 When Tide Tool is started it will read the current and previous day s logfiles if available During this time the GUI is deactivated and the lettering on the buttons is grey After the initial read is done the GUI is activated and the lettering turns dark violet On the bottom of the GUI is a message widget showing how many bytes have been read from the current log file p E E When Tide tcl is first started suuATRA_saval the lettering on all buttons is sana veut nono cits f pris ge tai mbo f mea f sino f teaa f nies grey inactive except for the Pol lel pA AA A Pte Pad ka A EXIT button The station button section is placed on a scrollable expandable canvas Depending on the size and resolution of your screen you may or may not need to scroll Region names like SUMATRA_JAVA are yours to create and are to be placed in the metadata file as described previously Clicking on a button in the GUI will display a menu showing the gauges available
6. PP AAPA SES AAI SSVI In this snap shot the Benoa Indonesia station was selected and the menu showing three gauges a pressure radar and encoder gauge plus two other items Info and BAY_OF_BENC MO Mess are displayed Those sitt chet f moa f tma colo coi xmaf anic will be discussed later Four CEMTRAL_INDIAN_OCEAN buttons 5 EXIT RETILE hani garc male gam laruf agal bluef rodr ptlu REPORT and UPDATE cote Leber STATUS appear on the aiid sani iam cain cals Samad sca senna eas setae E Ex bottom If you make changes to the file referred to by the ee parameter tilelistfile clicking Read 10514063 Bytes Fro alats RETILE will retile the screen EXIT RETILE mee Ba UPDATE STATUS Clicking on UPDATE STATUS will send station saba cili f prig enggf tanj ambof sebl sibof teda f bitg waik f chrs f dindf djvw f djve kota komif lang prte lam status information to the clients Clicking REPORT will generate a table showing the number of messages received for each station The last two features will be described in greater detail later The Monitor and Zoom Widgets Selecting one of the sensors for example prs rad enc bub will create a monitor widget This shows the sea level curve as a function of time Clicking on the prs pressure sensor for the Benoa beno station produces a monitor widget for the Benoa station pressure sensor Monitor BENO PRS Benoa ID
7. feature Clicking on the MAP button will display a map GIF file imported into a tk widget showing the geographic context of the stations There are three views showing the station at Benoa in a global regional and local context The location of the station is centered on the map Contour lines showing tsunami travel times at one minute intervals are drawn using the station as the starting point These maps are useful when it comes to assessing how the station may be impacted by a tsunami For example if the station is relatively sheltered or is facing away from the likely direction of tsunami propagation it may not be ideal or useful for evaluating the destructiveness of the tsunami Tide Tool Clients Tide Tool has four basic clients one each for the Indian Ocean Pacific Ocean Atlantic Ocean and Caribbean Sea These clients shown below are interactive map interfaces Indian Ocean Client Caribbean Client Tide Tool Caribbean Ocean Client V1 4 Tide Toot Indian Ocean Client V1 4 2 Se a Pacific Ocean Client Message received within last In each interface display window the small dots show the location of coastal sea level stations and the larger dots show the position of the DART buoys The colors of the dots indicate status and the meaning of the colors is given by the legend just below the map Green indicates that at least one message was decoded for that station within the last 7 hours
8. programmable parameters for data water level monitoring and data transmission via satellite Other meteorological sensors can also be utilized in conjunction with these systems The water level data is sampled at a 2 second rate averaged over a 2 minute period and transmitted via GOES or GMS on an hourly basis to PTWC However NOS US NOAA National Ocean Service is upgrading sea level stations to transmit 6 one minute samples every 6 minutes Already a number of NOS stations in Hawaii and Alaska region have been upgraded to the higher transmission rate Supported by the IOC with funds from NOAA the UHSLC is upgrading the GLOSS stations in the Indian Ocean The upgraded gauges in the Indian Ocean transmit every 12 or 15 minutes with 12 to 30 one minute samples for the sensors with the highest sampling rate Each sea level site may use one or more of 6 types of sensors e SPS Submersible Pressure Sensor measures water level sea pressure from 0 45 feet Backup pressure sensor code is SPB e PRI1 PR2 Pressure sensors e BUB Bubbler Pressure Sensor measures water level sea pressure from 0 45 feet utilizing a nitrogen gas purging system in a cavity submerged in the water As sea level changes the pressure in the nitrogen gas cavity changes Backup bubbler code is BBB e ENC Incremental Encoder Sensor measures water changes developed in a stilling well system incrementally changing a pulley using a float and weight A
9. prs davo prs After Tide tcl is running you can edit the file Tile_List to designate other stations and then hit the button RETILE to show these station monitors printer_command or plot_pri_com which specifies the command for printing Presently the default is set for a linux unix command or defaulted to no printing 6 Start get_data tcl drop icon onto WIZE icon This short cut has already been created by the Package to provide an easy way to start get_data tcl without having to open a console to type the command This is to simply drop the script onto the WIZE icon e g to run get_data tcl highlight the tcl script and move drop it onto the WIZE icon to start the script get_data tcl runs wget exe twice first to obtain the filename of the most current data file and second to download that data file The downloaded data file is then concatenated to the existing srxxx log file of transmissions which is used by Tide tcl 7 Start Tide tcl drop icon onto WIZE icon This short cut has already been created by the Package to provide an easy way to start Tide tcl and the Map clients without having to open a console to type the command This is to simply drop the script onto a WIZE icon e g to run Tide tcl and the map clients highlight the tcl script and move drop it onto the WIZE icon to start the script Tide tcl reads and decodes the existing data in the current day s SRLOG file srxxxxx log and then reads T
10. the syntax station gauge JJJ where JJJ is Julian day The data is arranged in a two column ASCII format time in fractional Julian day and sea level height in meters To enable this feature you must define the dirname parameter in the script This parameter specifies where the decoded tide data is written If this parameter is not specified decoded data will not be written to your system An example from PTWC s implementation is set dirname home stuart Tide 2009 Note This directory must be created before running Tide tcl it will not be created for you 3 hardirname Tide tcl will now de tide the decoded sea level messages The files that contain the harmonic coefficients have the naming convention station_code tide coeffs They are to be placed in the directory specified by the hardirname variable An example from PTWC s implementation is set hardirname home stuart Tide Tide_Coeffs 4 metadata_filename The full pathname for the metadata file which determines which stations to decode and display If not specified TideTool_MetaData is assumed An example from PTWC s implementation is set metadata_filename COMP_META 5 mapdirname Tide Tool can now display maps showing the geographical context in which the sea level station lies These maps contain a lot of information and they will be described later in this document An example from PTWC s implementations set mapdirname
11. 41 0639 0637 0637 0638 0637 0635 0634 0634 0634 0634 0633 sitt 047 048 097 0633 0632 0631 0631 0631 0629 0628 0627 0627 0627 0626 0625 1127 1125 1124 Note that this widget is scrollable and has a print button However as different systems utilize different commands for printing text the print button requires some configuration by the user In particular the PRINTER_COMMAND variable must be set to a string that is the printer command If this variable is not set the PRINT button will not appear It may require more work in the future to make this option a bit more user friendly If you cannot get it to work contact Stuart Weinstein and we will try to develop a customized solution Clicking the REPORT button on the main GUI will give an account of the number of messages received and the number of messages expected for each station in the metadata file over a specified time period You can select 3 6 12 or up to 48 hours You can also print the report The report is approximate in terms of the number of messages expected however it is accurate enough so that you can keep track of stations that are having telemetry problems or other issues Note that receipt of a message as indicated on the report does not mean the message was successfully decoded only that it was received An example of the report is shown above to the left OVERVIEW 1D 22856700 beno Benoa ID 8 75 S 115 2166 E Another feature included is the MAP
12. 8 hours of data held by Tide Tool 2 Currently the graphs in the stripchart widget are not constrained to have the same time axis However I expect to change that in the near future 3 Use the output of the TTT program computes tsunami travel times distributed by ITIC to indicate the tsunami s ETA on the monitor widgets 4 Dynamic reconfiguration Changing station metadata or adding new stations will not require a restart of Tide Tool 5 Historical LOGFILES Tide Tool now has the ability to examine old logfiles To run Tide Tool in historical mode add the argument H to the command you use to invoke the Tide tcl script For example bltwish Tide tcl H There is one important caveat to be aware of in running Tide Tool in historical mode You must to be sure that the metadata used by Tide Tool is consistent with the date of the logfile you wish to examine Sensors and data units do change through time Upon starting Tide Tool in historical mode a simple entry widget will appear _Date and Span Entry JDAY 198 YEAR 06 SPAN i DONE This widget requires three entries Julian day Year and SPAN which is the number of days of data you wish to read starting at the Julian day and year entered After clicking the DONE button this widget disappears and the Tide Tool GUI then appears After this everything is basically the same as Tide Tool Currently the maximum span is 2 or two days worth of data decoded Author D
13. T RAD Pointa Pitre GP TIME UTC Next XMT 07 56 _ptptrad DESI RAD Desirade Guadaloupe FR TIME UTC Next XMT 08 17 desirad PRIC PRS Prickley_Bay_CD 12 MENU DESPIKE MAP PRINT A 2 2 2 2 8 2 6 T T 14 53 07 05 18 40 07 06 04 47 07 06 TIME UTC Next XMT 08 16 _pricprs BARB PWL Barbuda AG as a6 2 3 r 14 53 07 05 04 47 07 06 28 40 07 06 The station sensor indicators are themselves buttons and clicking on them will arrange the order of the stations in the stripchart widget in the same manner as clicking on the Station List menu the station clicked will go to the top and the other stations rearrange in terms of proximity to that station One limitation of the current implementation of the stripchart widget is that the time axes for the different stations are not identical However I am working on that In many cases sea level station s that are part of the same network transmit within two to three minutes of each other so the time axes are approximately the same anyway 4 Future Directions Among the new features under consideration for future releases of Tide Tool are 1 Real Time tide modeling In some cases not enough data is available to create a good set of tide harmonic coefficients In other cases the tide coefficients are no longer adequate or meteorological effects are skewing the de tiding In these cases it is useful to compute tide coefficients on the fly using the 4
14. Tide Tool Manual V9 2 July 2012 Tide Tool Version 9 20 Client Version 2 0 Abstract Tide Tool is an operational tool developed and supported by the Pacific Tsunami Warning Center for the decoding display and manipulation of sea level data transmitted over the WMO Global Telecommunications System GTS Tide Tool continuously decodes GTS sea level messages in real time and displays the time series on a computer screen users are able to interactively manipulate the time series to measure wave amplitude and period and to remove the tidal signal Non operational versions also exist for data transmissions through the internet ftp and for archived data 1 Introduction Tide Tool is created by the Tide tcl script which is based on the Tcl Tk extension called BLT Tcl Tk is an open source platform independent software package Tcl Tk at its heart is a robust shell programming language tclsh with a powerful graphical toolkit wish Appendix I Tide Tool v9 x also requires the Tk extension BWidget Tide tcl provides end users with the ability to decode display and manipulate sea level data broadcast over the Global Telecommunications System of the World Meteorological Organization WMO Data are continuously downloaded directly from the GTS to a data file which is then decoded and displayed The displays can be converted into postscript and printed A version is also available using a non GTS ftp data transmission protocol i
15. When unzipped the directory has the files SLdecode_display_summary7 pdf general summary Tide Tool 9 0 Manual Vxx doc User manual these install instructions are in Appendix ID PC_install_dirinfo txt contains directory structure specific for this installation TideTool_Quickinfo doc quick info cheat sheet for running software Setup exe installs software 3 Run Setup exe to place files in the correct directories and create desktop shortcuts Setup exe will e copy all files in C folder to C e create Shortcut for WIZE which runs Bltwish on desktop and names it WIZE e create Shortcut on desktop to go to C Tcl bin and names it TideTool_bin e create Shortcut on desktop to go to C Tcl TideTool and names it TideTool_data e create C Tcl uninst_TideTool exe Uninstall program in case there is a need to uninstall this package Unist exe will delete all installed files except the collected data files in the folder SR_LOG srJJSY Y log Decoded_Data decoded station data by Julian Day and any other files you have created since the last installation Setup exe in TideTool_v9 20_install zip places the following files folders under C FILE Folder NAME Tcl lt Folder gt gt bin lt Folder gt gt doc lt Folder gt include lt Folder gt lib lt Folder gt licenses lt Folder gt INSTALL LOG license at8 4 thread terms MANIFEST _at8 4 txt README 8 4 thread txt uninst exe TideTool lt Folder gt gt sta
16. Yellow indicates that at least one message was decoded within the last 24 hours and Red indicates no messages received in over 24 hours The reason these criteria were chosen is that the DART buoys in their normal mode as opposed to their trigger mode only transmit data 4 times a day The station status is updated automatically every 30 minutes and can be updated at any time by clicking the STATUS button on the decoder Tide tcl GUI These clients do not require any special configuration Place the client scripts in the same folder as the decoder and start them the same way as the decoder When the clients connect the message CONNECTED will appear on the bottom left of the client GUI as shown above If the decoder is not running or the clients have not connected yet the message will be NOT CONNECTED If the decoder is shut down after the clients connected the message will be DISCONNECTED Note that after the decoder Tide tcl is started it will not accept clients until the initial read of the current log file is completed A single left button click on a dot will om ARIAT display the station code for that station A double left button click will create a menu button just like the one on the decoder GUI and you can choose to display a sensor The Exit selection will delete the menu Only one menu at a time can appear so if you click on another dot any pre existing menu will be deleted You will notice that
17. a Re nee example of an information widget It Platform ID 22856700 shows basic information about the sea Ean Erve Tae level station Sensor Type prs Sample Rate 1mins Unit 001M Sensor Type rad Sample Rate 3mins Unit 001M Sensor Type enc Sample Rate 15mins Unit 001M Lat 8 7666 Long 115 2166 EXIT Clicking on the Mess item will create a widget that shows the last 100 messages for the station that were recognizable to Tide Tool An example of the messages widget is shown below on the right Transmission R eport Fe or Last 12 Hours Ji Print Messages For Station YAPI Station Received 2Rec ShpA41 RITD 160005 0647 0647 0647 0647 O64 0847 0647 0646 0646 0647 0647 0647 ESEE ea a en eee ae 0647 0647 0646 0646 0647 0647 0647 0647 0647 0647 0646 0646 1134 1134 1134 saba 048 048 100 134 1134 1134 1133 1133 1133 1134 1134 1134 1134 1133 1133 1133 1134 1134 1134 1134 1134 1134 1133 1133 0668 bee 60 GO o0 00 13 23 1340 13 19 meul 048 048 100 3 07 beno 048 048 100 saa 047 048 097 SWPA41 RITD 160017 0647 0647 0646 0646 0647 0647 0647 0647 0647 0647 0646 0646 zE 047 048 097 0546 0646 0646 0645 0645 0645 0645 0644 0644 0644 0644 0644 1134 1133 1133 prig 1133 1134 1134 1134 1134 1134 1134 1133 1133 1133 1133 1132 1132 1132 1131 engg 044 048 0914 1131 1131 1131 1131 1131 1130 0667 0664 60 60 0000 13 40 13 39 13 07 tanj 048 048 100 13 27 a re ae ae SWPA41 RITD 160029 0646 0646 0646 0645 0645
18. ample interval it may not eliminate the spike glitch In our experience however this simple technique has proven to be effective in the majority of cases Consider the mareogram obtained at Lime Tree Virgin Islands Clearly this station is having some sort of software or telemetry problem a Monitor LIME PWL Limetree_ VI 0 X d 4 i2 MENU TIDE DESPIKE MAP PAINT PP I l 4l will Meters aaa ta 09 00 22 53 05 24 05 24 TIME UTC Next XMT 07 43 lime pwl Clicking ps DESPIKE button results in Monitor LIME PWL TIDE UNDESPIKE MAP rane Limetree_VI 4 12 2m 0 1 Meters 09 00 22 53 05 24 05 24 TIME UTC Next XMT 08 37 lime pwl As you can see this is quite an improvement Also note that the DESPIKE button now reads UNDESPIKE Clicking this button now will undo the despiking The next to last button on the monitor widget is the PRINT button Clicking the PRINT button produces a menu with two options Plot File Only and Make Plot amp Print The first option will create a postscript file representation of the graph in the directory specified by the parameter plot_dir with the form ccccsss ps where ceee is the station code and sss is the station sensor The resulting plots are not exactly publication quality but more than good enough for record keeping purposes I expect to improve t
19. ang moe dpe 22 ys Caner STA 4 i The DART buoy concept is illustrated here eaS m diameter g displaceme a7 The DART sensor is a pressure sensor that sits on the sea Acoustic ransducers ie A each floor in very deep water and measures sea level fluctuations Tsunameter gt relayed by acoustic telemetry to the buoy and is then averaged over 15 sec to a precision of mm The data is uf Signal lag transmitted to satellite The data is transported to PTWC via line 58 gt Glass ball acoustic flotation telemetry XS Why DART buoys The Achilles heel of the warning S system is the unnecessary evacuations An evacuation of the Aes State of Hawaii will easily cost the State tens of millions of X ee ee transducer Batteries Sensor Anchor 325 kg ay a Bi directional D 5 OS 25 mm chain 3 5 m SVS iW Swivel 25 mm nylon 22 mm nylon 19 mm nylon 13 mm chain 5 m f y Anchor 3100 kg K A Optional met sensors Wind Barometric Pressure Seasurtace Temp amp Conductivity Alr Temporature Relative Humidity 1000 6000 m dollars in lost business revenue and the costs associated with executing emergency procedures Frequent unnecessary evacuations will undermine public confidence in the warning system If people stop paying attention to the warning system then we have failed the public Why do we have unnecessary evacuations Because forecasting how lar
20. cl and the map clients highlight the tcl script from the directory where they reside and move drop it onto the bltwish24 exe or wize exe icon to start the script There are 20 customizable parameters You can assign their values at the top of the Tide tcl script The assignment statements are already placed near the top of the script They have the form set parameter If nothing is placed between the default values will be used or some features will be disabled You must however specify the filename parameter The 20 parameters are 1 filename Tide tcl assumes the log files which contain the GTS WMO data are in the form rootJJJY Y log where JJJ is a three digit Julian day and YY is the two digit year The filename includes the path and filename suffix or root and should be specified as path root Note that the V is a special character in the Tcl world and must be escaped Therefore if you use the backslash in the path specification it must be written as W otherwise the path will be garbled The filename parameter must be set otherwise Tide Tool will not work An example from PTWC s implementation of Tide Tool is set filename data logs nmc sr where data logs nmc is the path and sr is the root Hence the filename of a log file for day 116 2006 is data logs nmc sr11606 log 2 dirname Tide tcl also has the ability to write the decoded tide data to files The decoded data files have
21. d 5 Set your machine to use UTC Tide tcl works following UTC so set your machine to use UTC or your machine will not create a new srJJJY Y log when the UTC date changed and shows errors 7 Run the scripts Type as follows under Desktop Tide_Tool V8 0 and get_data tcl starts gt usr local bin tclsh get_data tcl amp if you ve set the path just type get_data tcl amp Wait until the 1 file is successfully downloaded and then start the decoding displaying Type as follows under Desktop Tide_Tool V8 0 and Tide tcl starts gt usr local bin bltwish Tide tcl amp if you ve set the path just type Tide tcl amp When you need a map of Pacific Ocean type gt usr local bin bltwish Pacific_Client tcl amp You can add more maps if you need just by adding lines in the same way Tide tcl reads srJJJY Y log which get_data tcl creates Tide tcl reads Tile_List and automatically displays small data windows for each station Note that at the beginning srJJJY Y log is small and not all the station data are obtained so only a limited number of small windows will be displayed If you rerun the Tide tcl later on the first day of your usage it will display more stations since srJJJY Y log is larger Then you can keep those windows forever and need not rerun again When you run getTide tcl type gt usr local bin bltwish getTide tcl if you have set the path just type getTide tcl Then put the day year and spa
22. d area will expand when creating a client zoom widget A scale value of two seems to give good results A scale value greater than three produces somewhat fuzzy maps You can use non integers but then the generation of the client zoom widget may take several tens of seconds depending on your computer For the clients there are four total environment variables setenv METADATA FILENAME COMP META setenv PAC_MAP_FILENAME pacific_ocean_map gif IND_MAP_FILENAME indian_ocean_map gif CAR_MAP_FILENAME carribbean_map gif The other parameters are not installation dependent You can certainly generate your own map files in the GIF format and if you change the above parameters in the client Tcl Tk scripts you can create your own clients For now the clients can only do the linear cylindrical projection However I expect to add the math needed to do some other common projections like the Mercator in the future The COMP_META File The COMP_META file is a flat file database containing a list of all stations decoded by Tide Tool The COMP_META file has 18 columns and the metadata it contains includes the geographic coordinates for each station and a number of parameters that facilitates the decoding of the sea level messages From left to right the 18 columns are station code geographic name platform ID number WMO header sensor type sample rate for that sensor number of samples for that sensor per message observation un
23. d to remove the tidal signal A separate process archives GTS downloaded data continuously through a dedicated line recommended or alternatively by commercial internet ftp not recommended for operations requiring 100 reliability An offline tool getTide is available for archived data Archived data can also be viewed see Section 5 of User Manual The following are instructions for the installation and running of Tide Tool on a PC under a Windows XP or Vista operating system and with data collection through internet through wget Instructions below refer to the generic names of scripts in general each script will also include its version number as part of its file name e g Tide_v9 20 tcl Pacific_Client_v2 0 tcl etc Instruction for Tide Tool Windows version 1 If you already have an old version of Tide Tool delete the files You may use C Tcl uninst_TideTool exe to delete all the files Alternatively if you already have the wize exe TclTk V8 5 9 and BLT 2 5 chikan exe etc loaded you may instead just replace the old files with the new files or add the new files to the correct directory most often the updates are to Tide tcl map client scripts COMP_META or to the TideTool_MetaData files or are the addition of new Tide_Coeffs or MAPS files In this case you should stop get_data tcl and Tide tcl and then restart each again skip to Step 6 in this instruction 2 Download the latest TideTool_version_install zip
24. e Tide Tool can be downloaded from http ilikai soest hawaii edu ptwc Look for the latest version versions numbered sequentially and download the accompanying TideTool_MetaData file and the Tide_Coeffs directory A complete metadata inventory of PT WC s sea level station list can also be found at this link in the COMP_META file This will allow you to customize the stations your TideTool will decode The IOC maintains a website http www ioc sealevelmonitoring org where you can also monitor sea level and obtain information about sea level stations Computer and Software Requirements The software requires the installation of the Tcl Tk software package and the BLT BWidget extensions all of which are freely available for download and easy to install The software has been installed and tested under Unix Linux and Windows 2000 XP Vista and Win7 operating systems OS Use on other platforms is possible as it only depends on the Tcl Tk and BLT software being available The software does not require substantial computing power and can thus run easily on a Pentium III or higher PC system Some users download the sea level messages on a PC running a flavor of Windows and then transfer the data to a UNIX LINUX system or vice versa You must make sure that the scripts metadata and sea level message files are consistent with the platform Tide Tool is running on Tide Tool checks what OS it is running under and expects the files to
25. e span for all plots in the stripchart can be set by clicking and of the 4 buttons at the top A span of 48 hours is the default The time span can also be set for each station individually But any individual settings will be reset if the strip widget time span is selected Clicking the Station List button produces a menu showing all stations that are present in the stripchart widget Clicking any station on the menu results in the stripchart reorganizing the stations such that the clicked station appears first and the others ordered by proximity to the clicked station agua Aguadilla PR amal Charlotte Amalie VI arec Arecibo PR cule Culebra Is PR faja Fajardo PR i lame LameshurBayStJohnV1I lime Limetree VI magi Magueyes Island PR maya Mayaguez PR mona Mona Island PR pcan Punta Cana DO penu Penuelas PR The buttons on the monitor widget are not shown by default but can be invoked by left clicking anywhere on the monitor widget graph In this case the graph widget for the Prickley Bay station pric was clicked and now the usual monitor widget buttons have appeared Clicking on the graph again will make the buttons vanish Time Span a 24 12 4 Station List FIFR RAD Fort_de France MQ ae Oita es ee 18 40 07 06 00 23 07 0 TIME UTC Next XMT 07 55 fifrrad ROSE PRS Roseau_DM 2 5 2 4 2 3 2 2 22 r 14 53 07 05 28 40 07 06 04 47 07 06 TIME UTC Next XMT 08 18 _roseprs PIP
26. en done using the information in PC_install_dirinfo txt Some variables that you may want to additionally change are a metadata_filename variable if you want only a subset of the data to be decoded and displayed Pre selected files available are e COMP_META default will decode all stations and list in alphabetical order e COMP_META_region will decode all stations and list by region e TideTool_MetaData_IO is for Indian Ocean e TideTool_MetaData_NEPO is for Northeast Pacific Ocean TideTool_MetaData_NWPO is for Northwest Pacific Ocean e TideTool_MetaData_SEPO is for Southeast Pacific Ocean e TideTool_MetaData_SWPO is for Southwest Pacific Ocean e TideTool_MetaData_NWAO_CAR is for Northwest Atlantic Ocean Caribbean Gulf of Mexico e TideTool_MetaData_PO_IO_NWAO is for Pacific Ocean Indian Ocean and Northwest Atlantic Ocean Caribbean Gulf of Mexico e TideTool_MetaData is to specify user selected stations to decode display or getTide tcl tilelistfile which specifies which sea level station monitors to bring up at Tide tcl startup It is suggested to leave this file blank unless you would like a pre set set of stations displayed at startup An example Tile_List is provided You can set it not to bring up any monitors at startup by leaving this file unspecified For example if you need to monitor the 3 stations yapi mani and davo for prs sensor then Tile_List would look like yapi prs mani
27. eters control the appearance of the sea level graphs 12 plot_width and 13 plot_height These parameters set the dimensions of the basic Tide Tool sea level displays like that shown below for Benoa An example value would be 3 01 where i stands for inches Likewise the dimensions can be specified as 3 0c where c is for cm The defaults are 7 01 and 3 01 respectively 14 plot_bg 15 plot_obs 16 plot_cor 17 plot_pre These parameters set the background color for the displays and the colors for the observed corrected and predicted sea level curves 18 plot_dir 19 plot_pri_com specify the directory where postscript files of the displays are placed and the system printer command used to print them The printer must be understand postscript 19 strip_plot_width 20 strip_plot_height specify the width and height of the plots in the stripchart widget The defaults are 8 01 and 1 51 respectively Starting with Tide Tool V8 0 these parameters can also be configured using environment variables This way you will not have to edit the Tide tcl script to customize it for your implementation For example in C shell you can have setenv FILENAME data logs nmc sr setenv DIRNAME data logs nmc wl setenv METADATA_FILENAME dbase water COMP_META setenv HARDIRNAME dbase tide setenv MAPDIRNAME data ttt_dbase geoware maps setenv TILELISTFILE setenv PRINTER_COMMAND enscript f Courier Bold8 gt amp dev null
28. ge a tsunami generated on the Pacific Rim will be when it arrives on distant shores is still very much in its nascent stages Coastal tide gauges provide an imperfect guide as to how destructive a tsunami will be as it propagates away from the source This is because the near shore bathymetry and geometry of the harbor where the tide gauge is situated have as much effect on the wave height and inundation as the fundamental characteristics of the tsunami itself Along the same coast it is not unusual to find harbors that resonate strongly with tsunami and those which show much less tsunami activity Therefore the picture given by coastal tide gauges is somewhat murky and forecasts with respect to damage on distant coasts fraught with peril What was needed was a way to distinguish between tsunamis that will cross oceans with destructive power and tsunamis that may produce measurable but non damaging waves on distant coasts By measuring the properties of a tsunami far from the influences of near shore bathymetry and geometry the DART buoys give us a look at the tsunami in deep water unfettered by resonant effects Furthermore while modeling tsunami propagation in the near shore environment is difficult modeling tsunamis as they make their way into deep water is a much simpler problem and can be simulated with more robustness Therefore both Paul Whitmore of the ATWC EARTHVU and Vasily Titov of PMEL SIFT have produced a tsunami wave height forecas
29. have the end of line and end of file terminators appropriate for that OS Use the dos2unix or unix2dos utilities to ensure consistency with the OS It is not our intention to give a Tcl Tk tutorial in this manual as there are several good books and websites on the subject Please refer to a short list of them in Appendix I There is a large Tcl Tk user community and there is a Google group comp lang tcl devoted to Tcl Tk issues 2 Configuration For Decoder To execute Tide tcl you must run the bltwish exe program or wize exe program depending on your installation ITIC now distributes Tide Tool with Wize a Tk package that combines Tcl Tk 8 5 and BLT Wize is an unofficial BLT 2 5 Note that bltwish24 exe is an alias to bltwish exe so either can be used UNIX users can turn the Tide tcl script into an executable by making the first line in the script full_path bltwish and then making the script executable chmod u x Tide tcl When the bltwish or wize console appears just type source Tide tcl and the program should start Alternatively you may type bltwish Tide tcl or wize Tide tcl on a command line to start the program For Windows PC users another easy way to start Tide tcl and the Map clients without having to open a console to type the command is to simply drop the script onto a bltwish24 exe or wize exe icon To do this create a short cut alias of bltwish24 exe or wize exe and place it as an icon on the desktop To run Tide t
30. her formats such as jpg gif or png files or other conversion software Examining Historical Data Tide Tool has the ability to examine old logfiles In historical mode you must to be sure that the metadata used is consistent with the date of the logfile you wish to examine e g you may have to edit in the correct metatdata filename in Tide tcl before running Sensors and data units do change through time To run the argument H must be added to the command Tide tcl To run double click on C Tcl bin wize exe then type wize Tide tcl H The widget requires three entries Julian day Year and SPAN number of days of data you wish to read starting at the Julian day and year entered the maximum SPAN is 2 or two days worth of data decoded For more information see Section 5 of Tide Tool Manual Appendix III Tide Tool using Internet Data Download Linux Unix Developed and maintained by the Pacific Tsunami Warning Center Distributed by International Tsunami Information Center For more information contact Stuart Weinstein stuart weinstein noaa gov or Laura Kong laura kong noaa gov Version March 2009 NOTE this description has not yet been updated nor checked for consistency with V9 x Tide Tool is an operational tool developed and supported by the Pacific Tsunami Warning Center for the decode display and manipulation of sea level data transmitted over the WMO Global Telecommunications System GTS The tool contin
31. hese plots in the future The last group of numbered buttons sets the time span in hours Clicking the 12 button will change the maximum time span to 12 hours a Monitor LIME PWL nent roe wwoeseme map rawr 2 48 Limetree VI Meters 20 07 22 53 01 40 04 27 07 13 05 24 05 24 05 25 05 25 05 25 TIME UTC Next XMT 08 01 limepwi As new data is decoded by Tide tcl the monitor widget will be automatically updated to reflect the new data The widget will only display data for no longer a span of time than what is selected The maximum is 48 hours and that is the default If new data is decoded for a station while a display widget for that station exists the background of that display widget will change from black to blue for 0 6 seconds What operations can you do By using the right button or number three button on your mouse you can draw an expanding rectangle to zoom in on a section of the sea level curve Hold the right button down and move the mouse diagonally and you will draw a thin red rectangle When the section of curve you wish to examine is in the rectangle release the right button and a zoom widget will pop up with the selected portion of time serious expanded This was done on a mareogram of the 2010 Chile tsunami recorded at Acapulco acap The resulting zoom widget is shown in the figure below BEC TIDE DESPIKE Paine Him 2 914 3 510 Hm i 0 596 Wi A i i
32. i pw 3 2 hl A ji prap A 4 h fo NY wn nah re TE yon 3 4 hi 3 6 14 13 15 37 17 00 02 27 02 27 02 27 TIME UTC acap prs Zoom You can also further zoom on the zoom widget itself When the right button is released the appropriate section of curve will be displayed in the zoom widget The TIDE button at the top left has the same function as with the monitor widget On the zoom widget you can conduct simple measurements of amplitude and period Using the left or number one mouse button simply click on the curve in the zoom widget and a summary inset will appear in the top left corner showing the coordinates of the point you just clicked on A cross will mark the spot you picked After a second point is clicked on the coordinates of the second point will be displayed In addition the difference in height and time between the two points will be displayed on the summary inset Time difference is in minutes seconds and height differences are in meters A summary inset can be seen on the Acapulco zoom widget shown above Note the two crosshairs If you wish to clear the summary display click the middle or number two mouse button any where on the zoom widget canvas The PRINT button on the zoom widget has the same functionality as on the monitor widget The only difference is that the postscript file will have the form ccccsssZ ps note the Z The record button REC will allow you to record sea level observa
33. ile_List and automatically displays small same sized windows for each station data Note that at the beginning when srJJJYY log is small and or little station data are obtained only a small number of small windows will be displayed If you rerun the Tide tcl later on the first day of your usage it will display more station data since srJJJYY log is larger 8 Start map clients drop each map client icon onto the WIZE icon Each client opens a map of a different ocean showing the stations Pacific_Client tcl Indian_Client tcl Caribbean_Client tcl Atlantic_Client tcl More than 1 map client can be run at the same time Note that Tide tcl must always be running since the maps are only clients of Tide tcl You may also start Tide tcl and the map clients manually by a Double click on the C TcNbin wize exe to display console for each script b In the console window type example is for Indian Ocean wize Tide tcl amp c In the console window type example is for Pacific Ocean map bltwish Pacific_Client tcl amp Important Notes get_data tcl must always be running in order to collect the sea level data This means your computer must always be on and logged in If not data gaps will display for the times when data are not collected Tide tcl time series plots are output as postscript files To view and or print you may need additional software such as Adobe Acrobat Distiller to create a pdf file ghostscript to convert ps to ot
34. improving the port of Tide Tool to both LINUX and Windows and developing the scripts processes used to obtain GTS data from the Web Dr Dailin Wang PTWC created and maintains the suite of tide coefficients used in de tiding and is currently helping me to develop an on the fly de tiding algorithm in Tcl Dr Nathan Becker PTWC designed and created the station maps and the maps for the Tide Tool clients Peter Pissierssens IODE offered several valuable suggestions during my visit to IODE in 2006 Mark Van Crombrugge IODE helped get Tide Tool running on Windows Alina Nieves of the US NWS in Puerto Rico helped with testing Tide Tool V9 Last but not least I thank Chip McCreery and the PTWC staff for putting up with my mood swings while working on Tide Tool Appendix I Reading Materials Practical Programming in Tcl and TK by Brent Welch Prentice Hall A super book and introduction to Tcl Tk You can find it in many bookstores or obtain it from an online source Effective Tcl Tk Programming by Harrison and McLennan This covers fundamentals of event driven programming For those of you who do mostly serial programming in Fortran or C event driven programming is a bit a of a trip Tcl and the Tk Toolkit by John Ousterhout Ousterhout invented Tcl Tk So I feel obliged to mention his book Websites http www activestate com Products ActiveTcl You can get binaries here This site has something for every
35. is composed of the DART buoy number a three letter code and the year and Julian day The three letter code can be one of nha tra tha nhb trb thb which indicate normal transmission mode nha nhb trigger transmission mode tra trb and triggered hourly messages tha thb The contents of file 55015_nha_2008 235 look like DART Tasman _Sea_55015 dtas nha 55015 NDBC NORMAL MODE 46 9222 160 5622 2008234 DART m UTC 15 min Water Depth PTWC Unfiltered DCP_PLATFORM ID 55015P Data Format SampleTIme seconds from midnight 1 1 1970 WaterLevel SampleTime yyyymmddhhmmss 1219276800 04944 306 20080821000000 1219277700 04944 378 20080821001500 1219278600 04944 442 20080821003000 1219279500 04944 504 20080821004500 1219280400 04944 556 20080821010000 1219281300 04944 602 20080821011500 1219282200 04944 643 20080821013000 1219283100 04944 670 20080821014500 1219284000 04944 694 20080821020000 1219284900 04944 709 20080821021500 1219285800 04944 708 20080821023000 1219286700 04944 700 20080821024500 1219287600 04944 684 20080821030000 1219288500 04944 659 20080821031500 1219289400 04944 625 20080821033000 The first column is the epochal time seconds since midnight 1 1 1970 the second is the water column thickness in meters and the right column is the human readable time at the time of measurement 11 num_buttons_row This parameter sets the number of buttons per row on the main decoder GUI The next several param
36. its F for O1ft and M for mm a number that indicates the number of non data fields in the data payload time ordering 1 for chronological and 1 for reverse chronological order a scale factor transmission time interval hour minute of first transmission of the day latitude longitude availability of tide coefficients for tide prediction 1 for available 0 for unavailable owner of the sea level station and GLOSS ID added at the request of GLOSS An extra column was added with Tide Tool v9 0 that is used by the Tide tcl script to determine which decoding function to use An example is given below for the Benoa sea level station pressure sensor beno Benoa_ID 22856700 SXXX32 prs 1 30 M 3 1 1 00 015 0007 8 7500 115 2166 1 UHSLC PARSE_GLOSS In this case the entry in the last column is PARSE_GLOSS which is the Tcl function that will be called to decode messages from Benoa Any line in the metadata file that begins with will be ignored When Tide Tool starts it performs a quality check on the metadata file and will stop if the metadata file is not configured properly One can construct a customized metadata file using just the stations of interest An example of this is the TideTool_Metadata file that is also available at the ftp site This metadata file is customized for the Indian Ocean The metadata can be organized into regions of your choice by placing a region name like SUMATRA_JAVA on a line by itself The regi
37. l time get_data tel ee script to continuously download sea level from NWS gateway getTide tcl scccvesavereresens script to show the past sea level data Pacific_Client tcl Indian_Client tcl Caribbean_Client tcl scripts to display a map pacific_ocean_map gif indian_ocean_map gif caribbean_map gif maps for each ocean 3 Install TclITk amp BLT and set the path Download software of TclTk 8 4 14 or upper lower than 8 5 and BLT and install on your machine http www tcl tk software tcltk for TclTk http sourceforge net project showfiles php group_id 18616 for BLT How to install is mentioned in the instruction of each source so please follow the instruction How to set the path commands filenames file locations etc depends on your machine Here is an example gt whereis tclsh8 4 Find the location of tclsh8 4 gt whereis wish8 4 Find the location of wish8 4 gt whereis bltwish Find the location of BLT gt vi bash_profie Open the setting file to edit File name might be different if yours is not using bash but tcsh and so on With the command Is al you can search which file is for the setting Add the path for tclsh8 4 wish8 4 and BLT in the setting file For example when all of the three are in usr local bin add the following lines PATH PATH usr local bin Export PATH There should be a lib directory where the Tcl Tk libraries libtc
38. l8 4 s0 libtk8 4 s0 e g live This is where the BWidget package needs to be dropped The BWidget package can be obtained here ftp likai soest hawaii edu ptwc Tide_Toolv9 bwidget 1 9 4 tar Untar this file and drop in the lib directory described above 4 Edit Tide tcl to specify different filenames or directory paths than currently specific Some variables that you may want to change are a metadata_filename variable if you may want only a subset of the data to be decoded and displayed Some files available are COMP_META default will decode all stations TideTool_MetaData_IO is for Indian Ocean TideTool_MetaData_NEPO is for Northeast Pacific Ocean TideTool_MetaData_NWPO is for Northwest Pacific Ocean TideTool_MetaData_SEPO is for Southeast Pacific Ocean TideTool_MetaData_SWPO is for Southwest Pacific Ocean TideTool_MetaData_NWAO_CAR is for Northwest Atlantic Ocean Caribbean Gulf of Mexico TideTool_MetaData to select user selected stations b tilelistfile which specifies which sea level station monitors to bring up on Tide tcl startup An example Tile_List is provided Presently the default is not to bring up any monitors at startup For example if you need to monitor the 3 stations yapi mani and davo for prs sensor then Tile_List would look like yapi prs mani prs davo prs c printer_command which specifies the command for printing Presently the default is set for a linux unix comman
39. level station The other part is the dynamic map client There are currently three map clients one each for the Indian Ocean Pacific Ocean and the Caribbean Tide tcl listens for requests on port 15500 Communication between the decoder and clients is two way The clients and decoder can send instructions back and forth The decoder can support any number of clients so if you choose you can run multiple instances of the same client or all three clients When Tide tcl is started it will read data from the current day data log Tide tcl will keep up to 48 hours of data As more data arrives beyond what Tide tcl can hold it will discard the older data to make room for the new We have left some active debug code in Tide tcl so if you see a lot of output do not worry If Tide tcl fails please send PTWC s Stuart Weinstein stuart weinstein noaa gov as much of the debug output as you can up to the last statement before Tide tcl failed If possible send the log file Tide Tool was reading at the time Also send the error_log if you have one The Decoder Tide tcl starts by reading the previous day s log file if it exists and continues reading through the current day s log file A simple GUI will be displayed that has buttons for each tide station in the metadata file After the initial read through the current day log file Tide tcl goes into the background Tide Tool sleeps and wakes up every 20 seconds to see if any new data has arrived
40. n Linux and Windows XP Vista for tsunami centers without GTS links Appendices II and III The ftp method should be considered non operational if commercial internet service is utilized since connection reliability and timeliness especially during tsunami emergencies cannot be guaranteed The software application was originally developed by the US NOAA NWS Pacific Tsunami Warning Center to provide an operational tool for the real time continuous tsunami monitoring in the Indian Ocean Its primary users would be National Meteorological and Hydrological Service NMHS or other agencies with a down link from the GTS or to a data file containing those data formatted in a similar manner It has been tested under UNIX LINUX Windows 2000 XP and Vista environments in Indonesia Malaysia the IODE Belgium ITIC PMEL and at the PTWC The software is easily modified for changes in sea level message formatting and the addition of sea level stations The primary use of this software is as an operational program run by tsunami warning centers or other agencies that need to continuously monitor sea levels Mouse clickable functions include the expansion of the time series and measurement of the arrival time wave height and wave period from the incoming signal Tide Tool version 7 x and later use dynamic map clients which allow users to select individual stations for display The clients have a zoom feature that allows users to selec
41. n in a small window As mentioned above use UTC to count days Desktop Tide _ Tool V8 0 Tide tcl Pacific Indian Caribbean_Client tel Pacific Indian Caribbean_map gif get_data tcl weet exe getTide tel URL_FILE TideTool_MetaData BOX TideTool_MetaData_IO0 PO NEPP NWPO SEPO SWPO NWAO_CAR COMP_META Tile_List Director Y Error_LOG to be created Error_LOG_past to be created Tide Coeffs coefficient files for the sea level stations Decoded Data decoded data are archived in this directory SR_LOG srJJJYY log files are archived in this directory MAPS maps for each station M past_metadata past COMP META amp TideTool MetaData Tide Tool 8 0 Manual doc SLmap_AO IO PO jpg Tide Tool LOG to be created L Tile Tool LOG past to be created APPENDIX IV SEA LEVEL GAUGE INSTRUMENTATION Extracted from PTWC OPERATIONS SYSTEMS AND PROCEDURES MANUAL Edition 1 0 December 2008 CHAPTER 6 SEA LEVEL DATA PROCESSING C SEA LEVEL GAUGE INSTRUMENTATION a Coastal Gauges The sea level networks of the world s oceans utilize a combination of NOAA GOES JMA GMS or EUROSAT satellite transmission communications These data arrive at PTWC via the NESDIS NWS communications routing through the NWSTG onto line 58 The sea level data is collected and transmitted from the sea level station using a Data Collection Platform DCP that are procured from various manufacturers The DCPs provide a suite of
42. o model wave heights the details of near shore bathymetry and coastline must be taken into account This requires very fine numerical resolution Yet applying such resolution to the whole of an ocean basin would require vast computational resources Therefore such models involve multiple numerical grids on many scales Wave height forecasting is still in its nascent stages although we can see the light at the end of the tunnel Coupled with a network of DART gauges these current models should enable the watchstander to distinguish between destructive and non destructive tele tsunamis Two tools that are currently being used are SIFT still being developed and tested and EARTHVU WC ATWC
43. on name is your choice however white space is not allowed hence underscores _ must be used instead of blank space The presence of region names will cause the main GUI to be segmented into different regions making it easier to locate stations on the GUI An example is given in section 3 To be consistent the same Metadata file parameter metadata_filename should be used in both Tide tcl and the map clients Pacific_Client tcl Indian_Client tcl Caribbean_Client tcl This will ensure that the Tide tcl station GUI showing decoded stations and the map client showing dots for each station with color coded station health are correctly shown and updated 3 Operational Details Please note that Tide Tool enforces GMT Greenwich Mean Time when decoding Therefore you must make sure that your system gives the correct GMT time This requires that you set the time zone on your computer to 0 offset from GMT Do not simply change the clock on your system change the time zone Changing the clock will cause Tide Tool to assume that the change of day occurs either too late or too early The use of GMT is necessary to remove any ambiguities with respect to time as GTS data also uses GMT If your system does not have the correct GMT time Tide Tool s behavior will be erratic Tide Tool version 7 0 consists of two basic parts the decoder created by the Tide tcl script with the familiar main GUI containing buttons for each sea
44. one http tcl sourceforge net http sourceforge net projects blt You can get binaries here and keep tabs on the latest FAQs versions bugs and advances in the Tcl world http phaseit net claird comp lang tcl HowToC html Howto on how to integrate the power of C programming with Tcl Tk I use combinations like this at PTWC Cameron is one of the great Tcl Tk experts and frequently answers Tcl Tk questions on the comp lang tcl Google news group You may find me there on occasions as well http wiki tcl tk 199 A starting point for BLT http pdqi com w pw pdqi Wize Blt A link to WIZE bit Appendix II Tide Tool using Internet Data Download Windows XP Vista and 7 Developed and maintained by the Pacific Tsunami Warning Center Windows internet version by International Tsunami Information Center Distributed by International Tsunami Information Center For more information contact Stuart Weinstein stuart weinstein noaa gov Laura Kong laura kong noaa gov Version June 2010 July 2012 Tide Tool is an operational tool developed and supported by the Pacific Tsunami Warning Center for the decode display and manipulation of sea level data transmitted over the WMO Global Telecommunications System GTS The tool continuously decodes sea level in real time and displays the time series on a computer screen users are able to interactively manipulate the time series to measure wave amplitude and period an
45. one can create a strip widget in each workspace or both tiling and stripcharts This is a fundamental change in behavior from Client version 1 x and makes version 2 x more versatile Time Span 48 A 4 Station List MENU funoesene MAP par f 4 24 as pi PIPT RAD Point a Pitre GP 21 27 07 06 00 13 07 07 03 00 07 07 05 47 07 07 TIME UTC Next XMT 07 38 ptptrad DESI RAD Desirade Guadaloupe FR 21 27 07 06 00 13 07 07 03 00 07 07 05 47 07 07 TIME UTC Next XMT 08 07 desirad ROSE PRS Roseau_DM T T r 21 27 07 06 00 13 07 07 03 00 07 07 05 47 07 07 TIME UTC Next XMT 08 08 roseprs FIFR RAD Fort_de France MQ 42 MENU 9 UNDESPIKE MAP PRINT J enuf wicesene une pror f 24 13 07 07 06 28 40 07 06 00 23 07 07 TIME UTC Next XMT 07 43 fitfrrad BARB PWL Barbuda AG Baz WA Manna Ee NANa nataran y Wah hte Salen 1 r r 21 27 07 06 00 13 07 07 02 00 07 07 05 47 07 07 TIME UTC Next XMT 08 08 barbpwi PRIC PRS Prickley_Bay_GD ws f Ate AN B24 eer ON a a An example of the stripchart widget is shown on the left The individual widgets in the stripchart are monitor widgets The stripchart is scrollable scrollbar on the right and currently there are no limitations as to how many stations can be placed in a single stripchart widget and there are no limitations aside from system limitations as to how many stripcharts can be made Individual stations can be placed in more than one stripchart The tim
46. r Stuart Weinstein Asst Director Richard H Hagemeyer Pacific Tsunami Warning Center Please send all questions bugs requests etc to stuart weinstein noaa gov For other related questions or assistance please contact Dr Laura Kong Director IOC UNESCO IOC NOAA International Tsunami Information Centre laura kong noaa gov Acknowledgments S Weinstein is indebted to several colleagues for their help and ideas in creating and improving Tide Tool The genesis of Tide Tool was a request from Dr Laura Kong in late 2005 to develop a quick and dirty tool that can be used to decipher GTS sea level data display the results and allow basic measurements of amplitude and period to be made from the sea level record Tide Tool 1 0 was released in Nov 2005 The earliest users and perhaps victims of Tide Tool were the Met Office in Malaysia and BMG in Indonesia Tide Tool has proven so capable that it is now part of the operational software suite at PTWC In Malaysia Namran Hussein provided valuable assistance in debugging Tide Tool Dr Yap Kok Seng Low Kong Chiew and Saw Bun Liong also provided suggestions and tested Tide Tool on Windows platforms Dr Fauzi BMG provided the first detailed set of instructions for obtaining everything needed to get Tide Tool running on LINUX Indra Gunawan was also very helpful in trouble shooting problems with Tide Tool Dr Yohko Igarashi JMA ITIC provided valuable assistance in
47. s sea level changes a float moves up and down The operation is similar to the float in your toilet Backup encoder code is ENB e PAQ Primary Aquatrak measures sea level with acoustics The transmitter and receiver are above the water Sea level is determined by the round trip time for the acoustic signal Backup aquatrak code is BAQ PAQ designation is used for NTF gauges e PWL This is the designation for NOS aquatraks BWL is the backup NOS sea level gauge designation usually a Paros pressure sensor e RAD Radar measures sea level using radar The RAD sensor is placed above the sea level and bounces radar signals off the sea surface Timing the round trip time yields the sea level The sea level stations systems are generally located in ports or bay areas in secure areas with facilities However they can be located in remote locations on most any shoreline where there is a suitable area for anchoring the sensor and the Electronic Systems are safe from the elements The photos below courtesy Richard Nygard show the basic elements of the Installation at Hiva Oa Marquesas The Hiva Oa station primary sensor is a pressure sensor SPS while the secondary gauge is an encoder ENB Hiva Oa Installation Hiva Oa Stilling Well Bi directional communication Iridium amp control satellite P g DART II System at oie sensor mast Iridium SS GPS antennas Electronic aystems e b DART Buo or
48. setenv RECORD_FILENAME home ptwc io params water obs tsu_measures setenv ERROR_LOG setenv NUM _BUTTONS_ROW 12 setenv TWC_DART_ FORMAT 1 setenv PLOT_WIDTH 6 01 setenv PLOT_HEIGHT 3 01 setenv STRIP PLOT_WIDTH 8 01 setenv STRIP_PLOT_HEIGHT 1 51 setenv PLOT_BG white setenv PLOT_OBS red setenv PLOT_COR black setenv PLOT_PRE blue setenv PLOT_DIR home ptwc io params water station_plot setenv PLOT_PRI_COM Ip d hp3700 If the environment variable is set for a parameter its value will take precedence over the setting in the Tide tcl script For Clients The clients have 10 required parameters however you should be able to use the clients with little modification The only parameters that you need to configure are the metadata_filename and Map_File_Name parameters The parameter descriptions are as follows 1 left_lon and 2 rht_lon These parameters represent the longitude limits of the map 3 top_lat and 4 bot_lat These parameters represent the latitude limits of the map 5 Image_Width_Pixels and 6 Image_Height_Pixels The width and height of the map in pixels 7 Map_File_Name The name of the map file As an example for the Pacific client we specify the map file using set Map_File_Name pacific_ocean_map gif 8 metadata_filename This is the name of the metadata file full pathname 9 client_title The name of the client that appears at the top of the client 10 scale The amount by which the selecte
49. some stations have a yellow halo this is to inform you that the station has been moved graphically from its actual location so that it can be located and clicked on the map When you use the zoom feature most of these halos will disappear as there is more resolution and less overlap among the station dots The DISP FIND STATIONS menu button on the bottom can be used to find stations on the map Clicking this button produces the menu SHOW STATION CODES FIND STATION CODE FIND NDBC ID The first two items if checked will cause the station codes and or DART NDBC numbers to be displayed on the map The FIND items are cascading menus that allow you to locate a station by its station code or DART NDBC number eme AY Tide Tool Caribbean Client vid To JE SHOW NDBC IDs E SHOW STATION CODES FIND NDBC ID To zoom in a section of the Client map use the right mouse button Click and traverse from one corner of the region you wish to enlarge to the opposite corner and release the button This will create a zoom client The zoom client has the same functionality as above It also has EXIT and SHOW buttons on the bottom Clicking EXIT will destroy the zoom widget a Applications Places System a eaa Sosy T SANF Gauge PRS Monito 0 X JUAN Gauge PRS Monitor O X mew _twe vesewKe map PA i a HA Ta e cific Ci e o 7 T ANTO Gauge PRS Monito OXT
50. t an area on the map client and enlarge it Socket handlers were added to the Tide tcl script such that Tide tcl becomes a server listening for requests on a designated socket The clients connect to Tide tcl over this socket Tide Tool version 8 x and later also has the ability to decode old logfiles of GTS sea level messages Of course decoding old logfiles necessitates having the correct metadata as of the date of the logfile getTide is now no longer needed Two fundamental changes have been made in Tide Tool V9 x the introduction of a stripchart widget and changes in coding that require the addition of another column to the COMP_META database file This column contains the name of the Tcl function that will decode messages from that station Previously the Tide tcl script needed to have all of the WMO headers used in GTS sea level messages hardwired into the Tide tcl script in an effort to assign a message to a decoder Hence products with new headers required a new release of Tide tcl which then required all users who wanted to display the new sea level message to install I hope from now on new products won t require a new release of Tide tcl unless they require a new decoding function Requirements In order to decode run the dynamic map clients and display the data the following are required e Computer running Tcl Tk software with BLT extension e Sea level data that are continuously archived into a data file e Tide tcl softwar
51. t database of pre computed tsunami scenarios These models will make predictions based on basic seismic data as to what size tsunami should be recorded by the DART and coastal buoys By comparing the predicted results to the observed the watchstander should be able to gauge whether or not the tsunami will be destructive when it arrives on distant shores 7 TSUNAMI TRAVEL TIME AND WAVE HEIGHT FORECASTING Whenever a Watch Warning message is issued the watchstander needs to run software to compute the travel times to the various warning points supplied by our clients This information is then relayed to our clients in our message products As mentioned earlier travel time calculations are relatively simple calculations they can be done quickly in real time However even this calculation can be speeded up by compiling a database of pre computed scenarios So we have two approaches for computing tsunami travel times The approach to be used during an event is to use the travel time database because it is faster However this approach eta tcl does not produce any graphical products After bulletins are sent the watchstanders can work with travel time tool tttool to produce a travel time map tttool will also compute travel times and can be used as a backup to eta tcl Among the most challenging numerical simulation problems is that of the tsunami It isn t the fluid that s difficult it s the boundary conditions that are a pain In order t
52. tion_name tide coeff Tide_vxXX tcl V9 20 get_data tcl wget exe chikan exe Pacific Indian Caribbean Atlantic_Client_vxXxX tcl pacific indian caribbean atlantic_map gif Tile List stations to display at start up wize exe Tcl1TK amp BLT files MetaData lt Folder gt gt COMP_META and TideTool MetaData region files may be outdated BOX lt Folder gt gt data downloaded from ftp site Decoded Data lt Folder gt gt decoded data by stations Error lt Folder gt gt Error LOG file MAPS lt Folder gt gt maps for stations PLOTS lt Folder gt gt time series plots SR_LOG lt Folder gt gt srJJJYY log files of GTS transmissions Tide_Coeffs lt Folder gt gt Atlantic_SL_ Stations _2012 pdf station maps Indian_SL_Stations_2012 pdf Pacific _SL_Stations_2012 pdf PC_install_dirinfo_may12 txt PTWC Operations Manual V1 3 5 doc README txt SLdecode_display_summary7_may12 pdf Tide Tool 9 2 Manual V2 0 doc TideTool QuickInfo doc WIZE wise exe includes TclTk V8 5 9 and BLT v2 5 wget exe is used to download data files e g files from NWS telecommunications gateway chikan exe is used to convert from Unix n to MS DOS r n 4 Set your PC to use UTC GMT Greenwich Mean Time 5 Customize Tide tcl and map client scripts to specify directories where files to be found or created and which files are to be used For this Windows package the customization has already be
53. tions in the file referenced by the record_filename parameter By clicking the point where tsunami waves first arrive and then clicking the First Arrival menu item you can record the arrival of the tsunami at a sea level station By using two picks you can record either the Zero to Peak or Peak to Peak variation on the sea level curve Entries in the record_filename file are in this form kota prs First Arrival 111 07 08 43 2007111 11 48 kota prs Peak to Peak 111 07 08 43 H 00 208 111 07 09 08 H 00 155 Per 00 24 Amp 00 052 2007111 11 48 The observation records start with the station and gauge followed by the type of measurement and then the measurement s In the case of First Arrival we have the day time stamp of the arrival in the format JJJ YY HH MM followed by the time this observation was recorded in format YY YYJJJ HH MM In the Peak to Peak or Zero to Peak cases both picks are recorded with a time stamp JJJ YY HH MM followed by H sea level height flag followed by the sea level in meters After the picks we have the time difference after the Per flag and sea level difference after the Amp flag between the two picks followed by the time the observation was recorded BENO Station Data Station Data For BENO The Info and Mess items allow you to display basic station data and recent i ic 4 Location Benoa messages for a given station This is an
54. uously decodes sea level in real time and displays the time series on a computer screen users are able to interactively manipulate the time series to measure wave amplitude and period and to remove the tidal signal Non operational versions also exist for data transmissions through the internet wget and for archived data Instructions for the installation and running of Tide Tool on a PC under a Linux operating system and with data collection through the internet ftp are provided below Instruction for Tide Tool Linux version 1 Put Tide_Tool tar gz on the Desktop and extract the files gt gunzip Tide_Tool tar gz gt tar xvf Tide_Tool tar Check if directory named Tide_Tool is created on the Desktop directories named Decoded_Data MAPS past_metadata SR_LOG Tide_Coeffs and V8 0 are under Tide_Tool files named Tide Tool 8 0 Manual doc and SLmap AO IO PO jpg are under Tide_Tool Create a directory named BOX on the Desktop 2 Check if the following files are in V8 0 COMP_META TideTool_MetaData TideTool_MetaData_IO PO NEPO NWPO SEPO SWPO NWAO_CAR URL_FILE Tile_List sample Get_data sh script to get the logfile srJJJY Y log which is required to run Tide tcl sr23608 log and some past log files are in SR_LOG for reference me HUG AG esre script to monitor the sea level data near rea
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