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Open-File Report 03-497


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The GIS project used to create the trackline maps on these discs and a README.txt file that describes the project in detail can be found in the ARC folder. The project is contained in an file and is composed of ESRI ArcView map documents and shapefiles. The map documents were created with ESRI ArcView 8.1 GIS software and are compatible with ArcGIS 8.1 (Windows). The shapefiles, created with ArcView 3.2 and 8.1, may also be viewed with other versions of ArcView or public domain software ArcExplorer 2.0 (Windows) and 4.0 (Windows, Mac OS X, Unix, Linux), available from the ESRI website at


Seismic Unix (SU) is a public domain seismic processing software package written and maintained by the Center for Wave Phenomena at the Colorado School of Mines in Golden, Colorado. The web site for SU is SU is compatible with both Unix and Linux operating systems. The SU scripts provided on this disc were modified from scripts written by the USGS Seafloor Mapping Group in Woods Hole, Massachusetts, and run on a Linux workstation. These SU scripts are located in the tar file boomll.tar, which can be found in the SU folder. These scripts are provided as examples only. They may need to be modified to run on another system. They also require the use of shareware programs such as ImageMagick.

The example SU scripts provided here will allow the user to strip off unique navigation fixes from the SEG-Y headers, along with a fix for every 500 shots, and produce a filtered and gained GIF image of each profile. These images can then be displayed using a variety of shareware programs, such as ImageMagick (Unix, Linux) or a web browser.

For instructions onhow to download the SEG-Y data files, click here.


DUMPSEGY.EXE is a DOS seismic data utility that allows the user to examine components of the SEG-Y data files (Zihlman, 1992): the EBCDIC and binary headers, the individual data trace headers, and the hexadecimal SEG-Y samples composing a data trace, or their actual floating point values. The DUMPSEGY.TXT file is the original open-file report that gives detailed instructions on how to use DUMPSEGY.EXE. The DSGYNEWS.TXT file describes the upgrades to the original program. These files are all located in the USGS folder. Please refer to DUMPSEGY.TXT and DSGYNEWS.TXT for further infomation and instruction.

Zihlman, F.N., 1992, DUMPSEGY V1.0: A program to examine the contents of SEG-Y disk-image seismic data: U.S. Geological Survey Open-File Report 92-590, 28 p.

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