Dataset description: Chirp seismic data

(No description)

Keywords	seismic reflection methods, sub-bottom profiling, marine geophysics
Format	SEGY

Comments:

00SCC02 (Chirp) Lines with shifts were split and gained by AF. Nav for these lines was split and partially edited by AF. The editing was completed by KC. Reprocessed with procnav, which was first divided to match the new split segy files. Data is not available for the very beginning of line 35_a, so its nav was edited to match the shorter line length.

Contacts

Contact	Arnell S Forde SPCMSC_data_contact@usgs.gov

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Location of materials and files

Supporting documentation or data
Public files	https://cmgds.marine.usgs.gov/data/00scc02/chirp/
Digital location	https://pubs.usgs.gov/of/2003/of03-156/
Metadata	https://cmgds.marine.usgs.gov/metadata/spcmsc/of2003-156metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
00SCC02	Chirp 424 The EdgeTech 3100-P Portable Sub-Bottom Profiling System is a low cost portable sub-bottom profiler system. It uses Full Spectrum (“chirp”) pulses to create high definition image slices of sub-bottom structure below the bottom. It can be used in rivers, lakes, ponds, and in the ocean. The EdgeTech SB-424 towfish has a frequency range from 4 - 24 kHz. This towfish uses special designed transmitters with low Q- wide band characteristics best suited for “chirp” transmissions. Two multi element line array hydro-phones are installed in the tow vehicle to reduce acoustic scattering from the sides. This results in a narrower across/along track beam pattern.

Activity

Equipment

00SCC02

Chirp 424

The EdgeTech 3100-P Portable Sub-Bottom Profiling System is a low cost portable sub-bottom profiler system. It uses Full Spectrum (“chirp”) pulses to create high definition image slices of sub-bottom structure below the bottom. It can be used in rivers, lakes, ponds, and in the ocean. The EdgeTech SB-424 towfish has a frequency range from 4 - 24 kHz. This towfish uses special designed transmitters with low Q- wide band characteristics best suited for “chirp” transmissions. Two multi element line array hydro-phones are installed in the tow vehicle to reduce acoustic scattering from the sides. This results in a narrower across/along track beam pattern.

Geometries linked to this dataset

Map	Name	Description
Map	Chirp_00SCC02_OF156