Dataset description: Chirp sub-bottom data

Chirp seismic reflection data and associated navigation files were collected in Ozette Lake, Washington, in 2019 for use in regional earthquake hazard assessments relating the Cascadia Subduction Zone. Dataset includes both raw and processed chirp data.

Keywords	sub-bottom profiling, sub-bottom profiling, geospatial datasets, marine geophysics, marine geophysics
Data types	Sub Bottom Profiler
Format	SEG-Y;
Amount	2.4 GB

Contacts

Contact	Alicia F Balster-gee [email protected]

Report a problem

Location of materials and files

Public files	https://doi.org/10.5066/P9W5RAL4
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9W5RAL4/2019-622-FA_seismic_chirp_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2019-622-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

2019-622-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