The Copy Header module transfers all SEG-Y trace headers from one seismic file into another, while preserving the original seismic amplitude data unchanged. This operation is useful when you have processed data that has lost its geometry or navigation headers and you need to restore them from a reference file that still carries the correct header information.
The module reads seismic trace amplitudes from the first input file (Input filename) and trace headers from the second input file (Header filename), then writes each trace to the output file with the amplitude data from the first file and the headers from the second file. Dead traces are included in the operation so the total trace count is always preserved. Both input files must contain the same number of traces, and the first input file defines the sample count, sample interval, and SEG-Y format (IEEE or IBM floating point) that will be used for the output file.
Because this module operates directly on SEG-Y disk files rather than through the standard g-Platform data stream, the Input data tab is disabled. All required file paths are specified in the Parameters tab.
Input data tab is disabled for this module. The user must provide all the information in the parameters tab.
Input filename - provide the 1st input SEG-Y file for which trace headers to be updated.
Select the SEG-Y file whose seismic amplitude data you want to keep in the output. The trace samples from this file are written unchanged into the output file. This file also determines the output SEG-Y format properties: number of samples per trace, sample interval, and the floating-point encoding (IEEE or IBM). Accepted file extensions are .sgy and .segy.
Header filename - provide the 2nd input SEG-Y file which should be used for copying/mapping the trace headers.
Select the SEG-Y file whose trace headers you want to apply to the output. For every trace, the complete 240-byte SEG-Y trace header block is read from this file and written to the corresponding trace in the output. This file must contain at least as many traces as the Input filename file. A common use case is to supply a pre-processing or field-geometry file as the Header filename when the amplitude data has been reprocessed without header preservation. Accepted file extensions are .sgy and .segy.
Output filename - provide the output file name.
Specify the path and file name for the output SEG-Y file that will be created. The output file will contain the seismic amplitude data from the Input filename and the trace headers from the Header filename. The output will use the same sample count, sample interval, and floating-point format as the Input filename, and will inherit its measurement unit system (metric or imperial). If a file already exists at the specified path it will be overwritten. Accepted file extensions are .sgy and .segy.
Skip - By default, FALSE(Unchecked). This option helps to bypass the module from the workflow.
When checked, the module is skipped entirely during workflow execution and no output file is produced. Use this setting to temporarily disable the header copy step without removing the module from the workflow. By default this option is unchecked (the module runs normally).
There is no output data available as a vista items.
This module writes its result directly to the SEG-Y file specified in the Output filename parameter. The result is not routed through the g-Platform data stream and does not appear as a dataset in the project. After the module completes, open the output SEG-Y file in a viewer or load it into the project as a new dataset to inspect the result.
There is no information available to this module.
There are no action items available for this module. The user can ignore this.
YouTube video lesson, click here to open [VIDEO IN PROCESS...]
Yilmaz. O., 1987, Seismic data processing: Society of Exploration Geophysicist
* * * If you have any questions, please send an e-mail to: support@geomage.com * * *
