Bathymetry Hillshade: Offshore of Point Reyes, California, 2010

Description:

This layer is a georeferenced raster image containing shaded relief (hillshade) data for the offshore region of Point Reyes, California. The bathymetry and shaded-relief maps of the Offshore of Point Reyes Map Area, California, were generated from bathymetry data collected by California State University, Monterey Bay (CSUMB), and by Fugro Pelagos. Mapping was completed between 2007 and 2010, using a combination of 200-kHz and 400-kHz Reson 7125, and 244-kHz Reson 8101 multibeam echosounders, as well as 468-kHz SEA SWATHPlus interferometric system. 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. NOTE: the horizontal datum of the bathymetry data (NAD83) differs from the horizontal datum of other layers in this DS (WGS84). The map that show these data are published in Open-File Report 2015-1114, "California State Waters Map Series—Offshore of Point Reyes, California." This layer is part of USGS Data Series 781. 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. Dartnell, P. and Kvitek, R.G. (2014). Bathymetry Hillshade: Offshore of Point Reyes, California, 2010. California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781. Available at: http://purl.stanford.edu/tt952ch3890. None This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

Resource Link:

https://purl.stanford.edu/tt952ch3890

Identifier:

https://purl.stanford.edu/tt952ch3890

Language:

English

Creator:

Kvitek, Rikk G., Dartnell, Peter, Golden, Nadine E., Seafloor Mapping Lab, and Pacific Coastal and Marine Science Center

Publisher:

Geological Survey (U.S.)

Provider:

Stanford

Resource Class:

Maps

Resource Type:

Digital maps

Subject:

Coasts, Digital elevation models, Remote sensing, Bathymetric maps, Geomorphology, Multibeam mapping, Submarine topography, Ocean bottom, Seismic reflection method, Imagery and Base Maps, Oceans, and Elevation

Temporal Coverage:

2007-2010

Date Issued:

2014

Spatial Coverage:

California, Marin County (Calif.), Drakes Bay (Calif.), and Pacific Ocean

Access Rights:

Public

Format:

GeoTIFF