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U.S. Geological Survey Data Series 553

How to Download SEG-Y Data

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The SEG-Y file format is one of several standards developed by the Society of Exploration Geophysicists for storing geophysical data. It is an open standard and is controlled by the SEG Technical Standards Committee, a non-profit organization. The SEG-Y formatted trace files have a .sgy extension. A detailed description of the data format can be found at

The sub-bottom data files archived in this report are binary encoded and cannot be viewed directly. The best way to download these files is to open the segy folder, select the SEG-Y files you wish to download, and drag and drop these files onto your hard drive or use the File > Copy command. The web version of this archive does not contain the SEG-Y trace files. These files are very large and would require extremely long download times. To obtain the complete DVD archive, contact USGS Information at 1-888-ASK-USGS or

NOTE: These files may be extremely large. The SEG-Y files for 07SCC01 range in size from 9 to 523 MB.

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