Bathymetry, Acoustic Backscatter, and Seafloor Character of Farallon Escarpment and Rittenburg Bank, Northern California

Data Catalog

This report contains bathymetry and acoustic-backscatter data collected along the outer mainland shelf and upper slope of the Farallon Escarpment as well as Rittenburg Bank. The report also contains interpreted seafloor character maps of the same region. These bathymetry and acoustic backscatter data were collected in 2011 by the U.S. Geological Survey in cooperation with the National Oceanic and Atmospheric Administration (NOAA) using a 100-kHz Reson 7111 multibeam echsounder (USGS FACS-ID F-01-11-NC). See report summary for mapping and data processing details.

The tables below provide the bathymetry, acoustic-backscatter imagery, and interpreted seafloor character maps. To view an overview map, click on the "Quick View" links. Bathymetry data are available in ASCIIRaster format files and shaded-relief bathymetry geoTIFF images. Acoustic-backscatter images are available as geoTIFF images. The interpreted seafloor character maps are available as geoTIFF images. The bathymetry data are horizonatally projected to UTM, zone 10, North America Datum of 1983 (CORS96) coordinates, vertically referenced to the North American Vertical Datum of 1988 (NAVD88). The shaded-relief, acoustic backscatter, and seafloor character geoTIFF images are horizonatally projected to UTM, zone 10, North America Datum of 1983 (CORS96) coordinates.

NOTE THAT THE USGS COLLECTS BATHYMETRIC DATA FOR SCIENTIFIC PURPOSES ONLY. THE USGS DOES NOT GUARANTEE THAT FULL BOTTOM SEARCH HAS BEEN ACHIEVED AND THE DATA HAVE NOT BEEN INSPECTED FOR DANGERS TO NAVIGATION. THESE DATA ARE NOT INTENDED FOR NAVIGATION.

Bathymetry data available to download

File Explanation	Bathymetry data in ASCIIRaster	Shaded Relief in geoTIFF format	Quick View
Upper Farallon Escarpment 10-m bathymetry (NAD-83, NAVD-88)	USGS_Escarpment_bathy_10m (4.6 Mb)	USGS_Escarpment_shd.zip (868 kb)	bathy_map
RittenBurg Bank 2-m bathymetry (NAD-83, NAVD-88)	USGS_RittenburgBank_bathy_2m(9.9 Mb)	USGS_Rittenburgbank_shd.zip (2.2Mb)
METADATA	TEXT, HTML, FAQ, XML

 

Backscatter data available to download

File Name	Backscatter in geoTIFF format	Quick View
Upper Farallon Escarpment 10-m backscatter	USGS_Escarpment_back_10m (984Kb)	backscatter_map
Rittenburg Bank 2-m backscatter	USGS_Rittenburg_back_2m (1.8Mb)
METADATA	TEXT, HTML, FAQ, XML

 

Seafloor Character maps available to download

File Name	Character in geoTIFF format	Quick View
Upper Farallon Escarpment 10-m seafloor character	FE_3class_nad83 (984Kb)	character_map
Rittenburg Bank 2-m seafloor character	RB_3class_nad83 (1.8Mb)
METADATA: Farallon Escarpment	TEXT, HTML, FAQ, XML

First posted November 24, 2014