Dataset description: 2021-322-FA

Navigation data for the entire survey, 1000-shot-interval locations, and start of line locations

Keywords	coastal processes, sub-bottom profiling, field activity logs, navigational data, geology, geospatial datasets, image collections, marine geology
Data types	Sub Bottom Profiler
Format	comma-delimited text;
Amount	4.2 MB

Contacts

Contact	Arnell S Forde SPCMSC_data_contact@usgs.gov

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Location of materials and files

Public files	https://doi.org/10.5066/P9VRSD9J
Metadata	https://cmgds.marine.usgs.gov/metadata/spcmsc/2021-322-FA_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2021-322-FA	Chirp 216 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-216S towfish has a frequency range from 2 - 16 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

2021-322-FA

Chirp 216

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-216S towfish has a frequency range from 2 - 16 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.