Bathymetry: Offshore of San Francisco, California, 2008
Abstract/Contents
- Abstract
- This layer is a georeferenced raster image containing bathymetric data for the offshore area of San Francisco, California. The bathymetric and shaded relief maps of the area were generated from data collected by Fugro Pelagos and by California State University, Mapping was completed between 2004 and 2008, using a combination of 400-kHz Reson 7125 and 244-kHz Reson 8101 multibeam echosounders. These mapping missions combined to collect bathymetry (sheets 1, 2) from about the 10-m isobath to beyond the 3-nautical-mile limit of California's State Waters. A large portion of this map area was re-mapped in 2009, however the older bathymetry data were used in this map due to co-registered, acoustic backscatter data. NOTE: the horizontal datum of the bathymtry data (NAD83) differs from the horizontal datum of other layers in this SIM (WGS84). Some bathymetry grids within this map were projected horizontally from WGS84 to NAD83 using ESRI tools to be more consistent with the vertical reference of the North American Vertical Datum of 1988 (NAVD88). A map that shows these data is published in Open-File Report 2015-1068, "California State Waters Map Series--Offshore of San Francisco, California." This layer is part of USGS Data Series 781.
- Purpose
- In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP) to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats and geology within the 3-nautical-mile limit of California's State Waters. CSMP has divided coastal California into 110 map blocks, each to be published individually as United States Geological Survey Open-File Reports (OFRs) or Scientific Investigations Maps (SIMs) at a scale of 1:24,000. Maps display seafloor morphology and character, identify potential marine benthic habitats and illustrate both the seafloor geology and shallow (to about 100 m) subsurface geology. Data layers for bathymetry, bathymetric contours, acoustic backscatter, seafloor character, potential benthic habitat and offshore geology were created for each map block, as well as regional-scale data layers for sediment thickness, depth to transition, transgressive contours, isopachs, predicted distributions of benthic macro-invertebrates and visual observations of benthic habitat from video cruises over the entire state. This coverage can be used to to aid in assessments and mitigation of geologic hazards in the coastal region and to provide sufficient geologic information for land-use and land-management decisions both onshore and offshore. These data are intended for science researchers, students, policy makers, and the general public. This information is not intended for navigational purposes.
Description
Type of resource | cartographic, software, multimedia |
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Form | Raster Dataset |
Place | Santa Cruz, California, US |
Publisher | Geological Survey (U.S.) |
Date valid | 2004 - 2008 |
Publication date | 2014 |
Edition | 1.0 |
Language | English |
Digital origin | born digital |
Map data | Scale not given. ; Custom projection W 122°37ʹ4ʺ--W 122°24ʹ57ʺ/N 37°51ʹ26ʺ--N 37°41ʹ49ʺW 122°37ʹ4ʺ--W 122°24ʹ56ʺ/N 37°51ʹ26ʺ--N 37°41ʹ49ʺ, Scale not given ; EPSG::4326 |
Creators/Contributors
Creator | Bretz, Carrie K. | |
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Creator | Dartnell, Peter | |
Creator | Kvitek, Rikk G. | |
Creator | Seafloor Mapping Lab | |
Creator | Pacific Coastal and Marine Science Center | |
Creator | Golden, Nadine E. |
Subjects
Subject | Coasts |
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Subject | Digital elevation models |
Subject | Remote sensing |
Subject | Bathymetric maps |
Subject | Geomorphology |
Subject | Multibeam mapping |
Subject | Submarine topography |
Subject | Ocean bottom |
Subject | Seismic reflection method |
Subject | California |
Subject | San Mateo County (Calif.) |
Subject | San Francisco (Calif.) |
Subject | Marin County (Calif.) |
Subject | Pacific Ocean |
Subject | San Francisco Bay (Calif.) |
Subject | 2004-2008 |
Subject | Imagery and Base Maps |
Subject | Oceans |
Subject | Elevation |
Genre | Geospatial data |
Genre | Cartographic dataset |
Bibliographic information
WGS84 Cartographics | This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection. |
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Location | https://purl.stanford.edu/sj511xg6228 |
Access conditions
- Use and reproduction
- This item is in the public domain. There are no restrictions on use.
- Copyright
- This work is in the Public Domain, meaning that it is not subject to copyright.
Preferred citation
- Preferred citation
- Dartnell, P., Kvitek, R.G., and Bretz, C.K.. (2014). Bathymetry: Offshore of San Francisco, California, 2008. California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781. Available at: http://purl.stanford.edu/sj511xg6228.
Collection
California State Waters Map Series Data Catalog
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