Western Coastal and Marine Geology

U.S. Geological Survey
Open-file Report 2006-1177

Benthic Habitat and Geologic Mapping of the outer Continental Shelf of North-Central California

DATA CATALOG

Each GIS data file is listed with a brief description, links to figures, metadata files, and downloadable files. The data were compiled in ArcInfo (version 9.1 ESRI, 2005). Raster data layers are registered TIFF images are in the UTM Zone 8 coordinate system with datum NAD83. Point, line and polygon features are in shapefile format, and are projected in UTM Zone 8 coordinates with horizontal datum NAD83. We recommend you create a single new folder within which to unzip the files you want to use.

The downloadable files have been compressed with the UNIX "tar" and '"zip" commands and can be unzipped by "g unzip" on UNIX systems or with Winzip on Windows systems. The numbers following ".tgz" are the file size when compressed and uncompressed. The .tgz file for a TIFF image includes the image (.tif), the world registration file (.tfw), and the metadata file (.txt). The .tgz for a shape file includes a .aux, .dbf , .shp, .shx, .sbx, and .sbn file, and the metadata .txt file as well as an .html metadata version of the .txt file.

Some virus-detection software will misinterpret the compressed format as virus-bearing. Use the override option (for example, "Stop" in McAfee VirusScan) to complete the file transfer.

ArcGIS Project File

Save this ArcGIS Project file fannyshoal.tgz (compressed, 56.8K; uncompressed, 345.5K) to the directory you created for this GIS to view the GIS with ArcGIS.

GIS data files

ArcGIS Theme Description

Quick view

Metadata

Compressed Files

Right-click (Windows) or click-and-hold (Macintosh) to download files from web

Basemaps

Coastline from 1:24,000-scale sources

cacoast.html

text FAQ

cacoast.tgz 10M (18M)

California Marine Protected Area Boundaries

ca_mpas.html

text FAQ

ca_mpas.tgz 351K (578K)

Fault lines

faults.html

text FAQ

faults.tgz 15K (37K)

Survey tracks from one-minute (time) navigation fixes.

survey tracks.html

m-1-03-nc
m-1-04-nc
m-1-05-nc

m-1-03-nc
m-1-04-nc
m-1-05-nc

Video dive habitat observations
Visual observations of benthic habitat from video video_obs.html text FAQ

vido_obs.tgz 69K (2.4M)

Side-scanning sonar backscatter images
1-m pixels
Side-scanning Sonar Image

side-scanning_sonar.html

m-1-03-nc
m-1-04-nc
m-1-05-nc

side-scanning_sonar.tgz 101.9M (291M)
Benthic habitat polygon shape file
Fanny Shoal Habitat Polygon Shapefile

fshab.html

text FAQ

fshab.tgz 5.7M (32M)

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URL: http://walrus.wr.usgs.gov/
maintained by Michael Diggles
last modified August 28, 2008 (mfd)