Seafloor Mapping and Benthic Habitat GIS for Southern California, Volume III

Cochrane, Guy R.; Golden, Nadine E.; Dartnell, Pete; Schroeder, Donna M.; Finlayson, David P.

Abstract:

From August 8-27, 2005, more than 75 km of the continental shelf (Fig. 1) in water depths of 20-70m southeast of Santa Barbara, were surveyed during the USGS cruise S-1-05-SC (http://walrus.wr.usgs.gov/infobank/s/s105sc/html/s-1-05-sc.meta.html). Both Interferometric sonar and 14 hours of both vertical and oblique georeferenced submarine digital video were collected to (1) obtain geophysical data (bathymetry and acoustic reflectance), (2) examine and record geologic characteristics of the sea floor, and (3) construct maps of seafloor geomorphology and habitat distribution. Substrate distribution is predicted using a modified version of Cochrane and Lafferty (2002) video-supervised statistical classification of sonar data that includes derivatives of bathymetry data. Specific details of the methods can be found in the meatadata of the bathymetry data file. Substrates observed are predominantly sand with some rock. Rocky substrates were restricted primarily to an east-west trending bathymetric high 2,000 m north of oil platforms. This is an updated report (version 2.0) from the earlier 2007-1271 (version 1.0) open-file report. This updated report re-releases the data files in UTM, zone 11, WGS84 coordinates. Also, the bathymetry data has been corrected for a vertical offset discovered in the earlier 2007-1271 (version 1.0) report.

Genre:

USGS Numbered Series

ProdID:

80847

Citation Author:

Cochrane, Guy R.; Golden, Nadine E.; Dartnell, Pete; Schroeder, Donna M.; Finlayson, David P.

Citation Contributing Office:

USGS Pacific Science Center/USGS Western Coastal and Marine Geology

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Version 2.0

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ENGLISH

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Citation LatN:

0342600

Citation LatS:

0341800

Citation LonE:

-1192700

Citation LonW:

-1193900

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HTML Page

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Citation Publisher:

Geological Survey (U.S.)

Citation Series:

Open-File Report

Citation Series Code:

OFR

Citation Series Number:

2007-1271

Citation Search Results Text:

Seafloor Mapping and Benthic Habitat GIS for Southern California, Volume III; 2007; OFR; 2007-1271; Cochrane, Guy R.; Golden, Nadine E.; Dartnell, Pete; Schroeder, Donna M.; Finlayson, David P.

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2007

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citation/reference

Text:

Seafloor Mapping and Benthic Habitat GIS for Southern California, Volume III; 2007; OFR; 2007-1271; Cochrane, Guy R.; Golden, Nadine E.; Dartnell, Pete; Schroeder, Donna M.; Finlayson, David P.