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U.S. Geological Survey Data Series 702
Bureau of Ocean Energy Management OCS Study BOEM 2012–029

In cooperation with the Bureau of Ocean Energy Management

Bathymetry and Acoustic Backscatter—Outer Mainland Shelf, Eastern Santa Barbara Channel, California

By Peter Dartnell, David P. Finlayson, Andrew C. Ritchie, Guy R. Cochrane, and Mercedes D. Erdey

Thumbnail of and link to report PDF (3.7 MB)Abstract

In 2010 and 2011, scientists from the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC), acquired bathymetry and acoustic-backscatter data from the outer shelf region of the eastern Santa Barbara Channel, California. These surveys were conducted in cooperation with the Bureau of Ocean Energy Management (BOEM). BOEM is interested in maps of hard-bottom substrates, particularly natural outcrops that support reef communities in areas near oil and gas extraction activity. The surveys were conducted using the USGS R/V Parke Snavely, outfitted with an interferometric sidescan sonar for swath mapping and real-time kinematic navigation equipment. This report provides the bathymetry and backscatter data acquired during these surveys in several formats, a summary of the mapping mission, maps of bathymetry and backscatter, and Federal Geographic Data Committee (FGDC) metadata.

         GIS Data for downloading

  • GIS Data (Contains data catalog, metadata, and associated files)
  • This report is available only on the Web.

For additional information:
Contact Information, Pacific Coastal and Marine Science Center
U.S. Geological Survey
Pacific Science Center
400 Natural Bridges Drive
Santa Cruz, California 95060

Part of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Dartnell, P., Finlayson, D.P., Ritchie, A.C., Cochrane, G.R., and Erdey, M.D., 2012, Bathymetry and acoustic backscatter—outer mainland shelf, eastern Santa Barbara Channel, California: U.S. Geological Survey Data Series 702, 6 p., and GIS data. (Available at




Mapping Mission

Geodetic Control

Data Processing

Merged bathymetry of the Santa Barbara Channel

Survey Results


References Cited

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