Uploading requirements for SEG-Y files being reported to the UK NDR:
Please ensure that all SEG-Y files to be uploaded to the UK NDR satisfy all the requirements detailed in the document “Form and Manner of NDR Information” published by the NSTA. Available at:
When a directory is selected to be uploaded from, all the files in that directory are read by the web browser and each file is checked for its compliance with the “Form and Manner of NDR Information” document. For SEG-Y files the binary and trace headers are checked for compliance with the following sections:
Section 4. General reporting requirements
Section 7. Geophysical information; subsection: “SEG-Y data: file format mandatory requirements”
If the file passes the compliance check then it is made available for C Tag assignment and can be selected for upload. SEG-Y data loading is now assisted by auto-suggested classification functionality. When the SEG-Y headers are populated appropriately, the system proposes a C Tag based on the information in the EBCDIC, binary and trace headers. The user can choose to either accept the suggestion or change to a more appropriate alternative.
For SEG-Y files being written prior to upload, there are recommendations for Trace headers and Textual header in Section 7. Geophysical information; subsection: “SEG-Y data: file format recommendations”
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