Dataset description: Chirp sub-bottom data collected in the Santa Barbara Channel in July of 2018

High-resolution chirp sub-bottom data were collected by the U.S. Geological Survey in July of 2018 between Point Conception and Coal Oil Point in the Santa Barbara Channel, California. Data were collected aboard the USGS R/V Parke Snavely during field activity 2018-645-FA, using an EdgeTech SB-512i sub-bottom profiler. Sub-bottom acoustic penetration spans several tens of meters and is variable by location.

Version	1
Keywords	sub-bottom profiling, geospatial datasets, marine geophysics
Data types	Sub Bottom Profiler
Format	SEG-Y;
Amount	24.9 MB

Contacts

Contact	Alicia F Balster-gee PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/5ebeda9e82ce476925e5d742 https://www.sciencebase.gov/catalog/item/5ebeda9e82ce476925e5d742 https://doi.org/10.5066/P93M68CN
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P93M68CN/2018-645-FA_chirp_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2018-645-FA	512 chirp is a seismic reflection instrument that uses sound to examine the layering of sedimentary strata on and below the sea floor. The Chirp being used in this project is a modified version of the Subscan 512 made by Edgetech. The noise it makes actually sounds like a bird's chirp; the frequencies of the sound it produces are between 500 Hz and 12 kHz. The Chirp has two advantages that allow it to get excellent penetration (meaning it can see deep, like >50 m or >64 ft, into the seabed) and high resolution (meaning it can make out fine layering, layers

Activity

Equipment

2018-645-FA

512 chirp

is a seismic reflection instrument that uses sound to examine the layering of sedimentary strata on and below the sea floor. The Chirp being used in this project is a modified version of the Subscan 512 made by Edgetech. The noise it makes actually sounds like a bird's chirp; the frequencies of the sound it produces are between 500 Hz and 12 kHz. The Chirp has two advantages that allow it to get excellent penetration (meaning it can see deep, like >50 m or >64 ft, into the seabed) and high resolution (meaning it can make out fine layering, layers