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Introduction
In order to use the sediment formulae criterion in UNCLOS Article 76, we need a dataset containing the sediment thickness. This dataset can be based on seismic data. This tutorial has some exercises which cover the basics for working with seismic data.
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Exercises
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Import SEG-Y filesThis exercise will guide you through import of a seismic line. It will cover the simple case for a plain SEG-Y file which follows the SEG-Y standard and has navigation stored in the trace header. In the example we will use the SEG-Y file which is stored with the Atlantis project. A SEG-Y file can only be imported into a seismic data folder. If you are using Geocap's standard UNCLOS folder structure then such a folder is located in 3. Sediment Data/Seismic Data In this exercise we will also generate a sub-folder in order to organize our data. - Locate the folder 3. Sediment Data/Seismic Data in your project
- Right click the folder and select New > Folder
- Right click the folder and select Rename. Give the folder the name of the survey. In this case ATL-LOS-00 (or give it another name if you are importing into the Atlantis project and the folder already exists)
- Right click the folder and select Import > SEG-Y 2D. The SEG-Y import menu will appear.
- Click the Defaults button in order to reset the menu to the default options.
- Click the file browse button and select the ATL-LOS-00-1.segy-file located in the Atlantis folder structure on disk (Projects/Atlantis_2_1/Data/Sediment data/Atl-los-1-segy).
- Click Open. The file follows the SEG-Y standard and we do not have to change the default settings.
- It might be a good idea to check that the Storage: in the lower right corner is set to 8 bit.
- Click Execute
- You will be prompted with a dialog asking you for datum and projection for the seismic line. Select WGS 84 and Mercator and click OK
- Click OK again
- Click OK in order to close the SEG-Y import command.
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