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Time: 06:36:25    Date:Thu 21 Nov 2024

SEGY Data Download Archive

DOI (Digital Object Identifier)

https://doi.org/10.18122/B2K11M

Download Seismic Data Sets in SEGY Format

The above link will take you to the search engine. The data are provided at no cost to academics, researchers, and the general public. Uses include benchmarking new software, conducting research, and teaching courses. Publications which use these data should use the following reference format:

Michaels, P. (2017) Basic Seismic Utilities (BSU) data archive, Boise State University, Center for Geophysical Investigation of the Shallow Subsurface, Boise Idaho.

These seismic data have been recorded on engineering seismographs (Bison and SEG-2 formats). However, the data have been converted to the SEGY data exchange format (includes geometry and other header information). While Basic Seismic Utilities (BSU) software can convert between both SEGY and BSEGY format (conversion program, bcnv), other software packages can also be used to read segy format. For example, SEGY can be read by Seismic Unix .

TYPICAL ZIP ARCHIVE CONTENTS:

• SEGY data files, *.sgy format.
• README files on how to convert from SEGY to BSEGY or Seismic Unix
• Scanned image of original observer's logs, *.pdf format (when available).
• Base map of project, *.dxf or *.pdf files (when available).
• NOTE: If base maps are not included, they can be created from the BSEGY headers using programs like BSU's bcad.

Every zip archive also has an MD5SUM associated with it to confirm validity of a download.

Using the search engine

Check boxes can be used to limit a search. If no check boxes are selected, then the entire archive will be listed when clicking on the submit button. Each check box reduces the number of archives that will be listed. For example, clicking on "Year Data Acquired" button for 1995 will cause only 1995 data to be listed after clicking on the submit button. The following are the categories of check boxes:

• Year Data Acquired
• Location (or project name)
• State (Idaho, Utah, Colorado)
• Instruments (Bison9048 or EGG Strata View)
• Source (type of hammer, air gun, dynamite)
• Survey Type (surface wave, down-hole, refraction, walk-a-way)
• Number of Recorded Channels (6, 7, 24, 30, 48, 64)
• Sample Interval (seconds)
• Pre-trigger (seconds)
• Low Cut Filter (Hz)
• High Cut Filter (Hz)
• Bore Hole Name
• Surface Data Line Name
• Refraction Line Name

The more check boxes selected, the less results will be returned in most cases. After downloading a zip archive, convert the data from SEGY to BSEGY if you wish to use the Basic Seismic Utilities (BSU) software.

NOTE on number of channels: CHANNELS = 7 case. 7th channel is loadcell on hammer head source.

Example: Click on Surface Data Line Number c008

Image produced by BSU programs: bcnv ---> bequ ---> bplt

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  Last Revised 15 July 2024