Online Links:
We thank Keith Ludwig, captain of the R/V G. K. Gilbert for his help in the data collection; Dave Foster and Jenna Hill, of the USGS Seafloor Mapping Group in Woods Hole, Mass., for providing examples of their archives; Jon Childs with the USGS in Menlo Park, Calif., who provided examples of his formal metadata; and Trent Faust and Rob Wertz with the USGS here in St.Petersburg, Fla., for their help in the web design and technical layout of the CD-ROM.
Marine seismic reflection data are used to image and map sedimentary and structural features of the seafloor and subsurface. The main objective of this cruise was to ascertain if data useful to the Everglades Aquifer Storage and Recovery Project could be acquired using seismic techniques. These data proved to be useful in mapping the extent and thickness of shallow sedimentary units beneath Lake Okeechobee, Fla., and in assessing other submarine geologic characteristics and features.
Are there legal restrictions on access or use of the data?Access_Constraints: None. These data are held in the public domain.
Use_Constraints:The U.S. Geological Survey requests to be acknowledged as the originator of the data in future products or derivative research.
This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data published on this CD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
| Data format: | The SEG-Y standard format (Barry and others, 1975) consists of the following: A 3600-byte reel identification header with the first 3200 bytes consisting of an EBCDIC header block and a 400-byte binary header block. Both headers include information specific to line and reel number. The trace data block follows the reel identification header. The first 240 bytes of each trace block is the binary trace identification header. The seismic data samples follow the trace identification header. Our data uses an ASCII header block instead of the standard EBCDIC. in format SEG-Y Size: 650 |
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| Media you can order: |
CD-ROM
(format ISO 9660)
Note: Unix, Linux, DOS, MAC |
| Data format: | The SEG-Y standard format (Barry and others, 1975) consists of the following: A 3600-byte reel identification header with the first 3200 bytes consisting of an EBCDIC header block and a 400-byte binary header block. Both headers include information specific to line and reel number. The trace data block follows the reel identification header. The first 240 bytes of each trace block is the binary trace identification header. in format SEGY data download Size: 650 |
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| Network links: |
http://cmgds.marine.usgs.gov/data/99asr01/ |
This archive is stored on an ISO 9660 CD-ROM.
Use of SEG-Y data requires specialized seismic processing software, such as Unix or Linux based public-domain software Seismic Unix developed by the Colorado School of Mines Center for Wave Phenomena, which can be downloaded from <http://www.cwp.mines.edu/cwpcodes> free of charge.
