Dataset description: Chirp seismic-reflection data collected offshore San Mateo County, California

High-resolution single-channel Chirp seismic-reflection data were collected by the U.S. Geological Survey in March and April 2007 from Pacifica to Half Moon Bay, offshore San Mateo County, California. Data were collected aboard the R/V Fulmar, during field activity F-02-07-NC. Chirp data were collected using an EdgeTech 512 chirp subbottom system and recorded with a Triton SB-Logger.

Version	1
Keywords	sub-bottom profiling, geospatial datasets, marine geophysics
Data types	Sub Bottom Profiler
Format	SEG-Y
Amount	1230.6 MB

Contacts

Contact	Stephanie L Ross PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/5cf05c64e4b0b51330e22e37 https://doi.org/10.5066/P980S50B
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P980S50B/F0207NC_Chirp_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
F207NC	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

F207NC

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