Bathymetry Hillshade: Offshore of Ventura, California, 2010
Abstract/Contents
- Abstract
- This layer is a georeferenced raster image containing shaded relief (hillshade) data for the offshore area of Ventura, California. The map of the area was generated from data collected by California State University, Monterey Bay (CSUMB) and by the U.S. Geological Survey (USGS). Most of the offshore area was mapped by CSUMB in the summers of 2006 and 2007, using a 244-kHz Reson 8101 multibeam echosounder. The seafloor west of Ventura Harbor was mapped by the USGS in 2006 and 2010, using 117-kHz (2006) and 234.5-kHz (2010) SEA (AP) Ltd. SWATHplus-M phase-differencing sidescan sonars. These mapping missions combined to collect bathymetry from about the 10-m isobath to beyond the 3-nautical-mile limit of California's State Waters. The map that shows these data is published in Scientific Investigations Map 3254, "California State Waters Map Series--Offshore of Ventura, California." This layer os 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 | 2006 - 2010 |
Publication date | 2013 |
Edition | 1.0 |
Language | English |
Digital origin | born digital |
Map data | Scale not given. ; Custom projection W 119°26ʹ54ʺ--W 119°14ʹ57ʺ/N 34°22ʹ48ʺ--N 34°12ʹ54ʺW 119°26ʹ54ʺ--W 119°14ʹ57ʺ/N 34°22ʹ48ʺ--N 34°12ʹ53ʺ, Scale not given ; EPSG::4326 |
Creators/Contributors
Creator | Kvitek, Rikk G. | |
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Creator | Phillips, Eleyne L. | |
Creator | Cochrane, Guy R. | |
Creator | Dartnell, Peter | |
Creator | Pacific Coastal and Marine Science Center | |
Creator | Seafloor Mapping Lab | |
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 | Ventura County (Calif.) |
Subject | Pacific Ocean |
Subject | 2006-2010 |
Subject | Imagery and Base Maps |
Subject | Oceans |
Genre | Geospatial data |
Genre | Cartographic dataset |
Bibliographic information
Supplemental information | Information for the related USGS Pacific Coastal and Marine Science Center data collection field activities is available online: Z-2-06-SC, at <http://walrus.wr.usgs.gov/infobank/z/z206sc/html/z-2-06-sc.meta.html>; S-W1-09-SC online at <http://walrus.wr.usgs.gov/infobank/s/sw109sc/html/s-w1-09-sc.meta.html |
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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. |
Location | https://purl.stanford.edu/mw297gy9345 |
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
- U.S. Geological Survey. (2013). Bathymetry Hillshade: Offshore of Ventura, California, 2010. California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781. Available at: http://purl.stanford.edu/mw297gy9345.
Collection
California State Waters Map Series Data Catalog
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