Deep-Tow Acoustics/Geophysics System Compressional Velocity Database

This technical note describes the Deep-Tow Acoustics/Geophysics System (DTAGS) compressional velocity database, a compilation of compressional velocity functions derived from DTAGS deep-tow multichannel seismic data. Three geologically distinct areas are represented by the velocity functions include...

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Bibliographic Details
Main Authors: Rowe, M. M., Gettrust, J. F.
Other Authors: NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS
Format: Text
Language:English
Published: 1992
Subjects:
Physical and Dynamic Oceanography
Geology
Geochemistry and Mineralogy
Seismology
Acoustics
*OCEAN BOTTOM SOILS
*GEOACOUSTICS
TOWED ARRAYS
SEISMIC DATA
JUAN DE FUCA STRAIT
NORTH ATLANTIC OCEAN
ACOUSTIC DATA
SEDIMENTS
WAVES
DATA BASES
COMPRESSION
ACOUSTIC VELOCITY
DTAGS(DEEP TOW ACOUSTICS GEOPHYSICS SYSTEM)
BERMUDA RISE
BLAKE OUTER RIDGE
HELMHOLTZ TRANSDUCERS
PE0601153N
PE0602435N
W93622H
W13622B
Methane hydrate
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA252700
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA252700
Description
Summary:This technical note describes the Deep-Tow Acoustics/Geophysics System (DTAGS) compressional velocity database, a compilation of compressional velocity functions derived from DTAGS deep-tow multichannel seismic data. Three geologically distinct areas are represented by the velocity functions included in this database: thick turbidites on the Bermuda Rise, fine grained terrigenous sediments containing methane hydrate on the Blake Outer Ridge, and thin sediments overlying young basement near the Juan de Fuca Ridge. Horizontal sampling frequency of the database ranges from 45 to 230 m. Vertical sampling frequency ranges from 20 to 300 m. These compressional velocity profiles, functions of geographic region, layer thickness and range along the ship track, were determined from the DTAGS multichannel seismic data using standard semblance velocity analysis procedures. The six ASCII files containing compressional velocity data are included on an MS-DOS 3-1/2 diskette which may be order from the authors using the form included with this technical note. Included on the disk with the data files are two test files containing a description of the data file format and a list of locations where the data were collected. Included with ADM000134

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