Dataset description: Chirp sub-bottom data

This data release contains processed chirp sub-bottom data that were collected aboard Humboldt State University's R/V Coral Sea. MCS data were collected to characterize quaternary deformation and sediment dynamics along the southern Cascadia margin. Chirp sub-bottom data were collected coincident with sparker MCS data.

Version	1
Keywords	sub-bottom profiling, geospatial datasets, marine geophysics
Data types	Sub Bottom Profiler
Format	SEG-Y
Amount	13200 MB

Contacts

Contact	Alicia F Balster-gee PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://doi.org/10.5066/P9MYL7WJ
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9MYL7WJ/2018-658-FA.chirp.metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2018-658-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

2018-658-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