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Purpose

This tool allows downloading tide measurements or estimates from the tide monitoring station database in the WorldTides website. An authorization key can be obtained by creating a free account. The tide information is retrieved for free not using any credits, as specified in the website.

 

Technical Note

This tool allows getting 1 tide measurement (or estimate) for each geocoded image included in input file list. If the point is within a distance of 1 degree of latitude and longitude from the station database a value is shown, otherwise an error message is returned. The time information is retrieved from the images.

The information is provided in shapefile format as point feature. The point coordinates of the shapefile are computed as the center of image extent. In case more than one image is included, the point coordinates are computed as the mean of the center extent coordinates. The tool gets measurements or estimates provided by the tide database. The computed central point hast to be within a distance of 1 degree (lat/lon) from the closest measurement or estimate, otherwise a server error message (Wrong input parameter) is displayed in a pop-up.

 

Input File(s)

 

Input

Input file or input file list (_geo, _slc, _grd, _slc_list) . This file is mandatory.

 

Parameters - Principal Parameters

 

Tide Base URL

URL of the website.

 

Tide User Auth Key

The authorization key to access the the WorldTides website. To get the key, open the WorldTides website, click on Account and then Settings/API Key; copy the APY key code.

 

Parameters - Global

It brings to the general section of the Preferences specific parameters. Any modified value will be used and stored for further processing sessions.

 

Parameters - Other Parameters

It brings to the Principal Parameters.

 

Output Files

 

Name of the output shapefile. This file is mandatory.

 

Output(s)

 

outputfilename.shp

The output shapefile and the corresponding auxiliary files. The shapefile includes tide height for the acquisition time of each input image. The time series can be displayed using the Time Series Analyzer vector.

 

General Functions

 

Start        

Start of the processing.

 

Store Batch        

The processing step is stored in the batch list. The Batch > Execute Batch button allows to load and execute the batch processing list.

 

Cancel        

The window will be closed.

 

Help        

Description of the function.

 

Specific Function(s)

 

None.

 

Credits

Copyright & Disclaimer from the WorldTides website.

Tidal data retrieved from www.worldtides.info. Copyright (c) 2014-2020 Brainware LLC. Licensed for use of individual spatial coordinates on behalf of/by an end-user. Copyright (c) Oregon State University. Licensed for individual spatial coordinates via ModEM-Geophysics Inc. NO GUARANTEES ARE MADE ABOUT THE CORRECTNESS OF THIS DATA. You may not use it if anyone or anything could come to harm as a result of using it (e.g. for navigational purposes).

 

The tidal predictions are based on a non-authoritative static model and they do not consider current weather conditions. The accuracy of the global model in shallow (e.g. coastal waters) is limited. Heights are referenced to Mean Sea Level (MSL) and not to the chart datum.

 

See Also

 

Task, SARscapeBatch object, SARscapeBatch script example

 

References

 

None.