Applying elevation/topography values to seismic trace headers
Topography or elevation profile is one of the key component especially for land seismic. Vintage onshore data acquisition crew records the SOURCE and RECEIVER elevations in a spreadsheet and not in the SPS format then we have the punched elevation information in ASCII. We can apply these topographic information to seismic trace headers.
Trace headers input - this information is required to update the trace headers with the topography information. As we mentioned in the introduction, source and receiver headers needs to be updated with the elevation from the ASCII file. Connect/reference to the Output trace headers (which doesn't have elevation information in their trace headers).
PostStack Horizon - connect/reference to the output/post stack horizon. It takes the coordinate information from the horizon.
Calculation type { S, R, SR } - specifies the type of calculation. Select the appropriate calculation type from the drop down menu. By default, SR(Source Receiver).
Interpolation - this section deals with interpolation of the elevation data. The elevation file consists of few source and/or receiver elevation information. To get the elevation for all the source/receivers, we need to interpolate the elevation data from the available information only.
MaxDist - specify the maximum distance for the interpolation of topographic values
MaxPointCount - specify the number of interpolation points
Skip - By default, FALSE(Unchecked). This option helps to bypass the module from the workflow.
Trace headers output - outputs the trace headers with updated elevation information. These trace headers can be used for further processing.
ErrorCount - displays the error information if there are discrepancies in the input elevation file.
There are no action items available for this module.
YouTube video lesson, click here to open [VIDEO IN PROCESS...]
Yilmaz. O., 1987, Seismic data processing: Society of Exploration Geophysicist
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