Title: Bathymetry Hillshade: Offshore of Refugio Beach, California, 2015
- Raster data
- 2015
- Not owned by MIT (Owned by Stanford)
- Finlayson, David P.
- Dartnell, Peter
- Phillips, Eleyne L.
- Golden, Nadine E.
- Pacific Coastal and Marine Science Center
Dates
- Issued: 2015
- Coverage: 2015
Publishers
- Geological Survey (U.S.)
Summary
This layer is a georeferenced raster image containing shaded relief (hillshade) data for the offshore area of Refugio Beach, California. The bathymetry and shaded-relief maps the area were generated from bathymetry data collected by the U.S. Geological Survey (USGS), and by Fugro Pelagos, for the U.S. Army Corps of Engineers (USACE) Joint Lidar Bathymetry Technical Center of Expertise. The offshore region was mapped by the USGS in 2008, using a 234.5-kHz SEA (AP) Ltd. SWATHplus-M phase-differencing sidescan sonar. The nearshore bathymetry and coastal topography were mapped for USACE by Fugro Pelagos in 2009, using the SHOALS-1000T bathymetric-lidar and Leica ALS60 topographic-lidar systems. All these mapping missions combined to collect bathymetry from the 0-m isobath to beyond the 3-nautical-mile limit of California's State Waters. A map that show these data are published in Scientific Investigations Map 3319, "California State Waters Map Series--Offshore of Refugio Beach, 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., Phillips, E.L., Finlayson, D.P. (2015). Bathymetry Hillshade: Offshore of Refugio Beach, California, 2015. California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781. Available at: http://purl.stanford.edu/sd434vw6164. Information for the related USGS Pacific Coastal and Marine Science Center data collection field activity, S-8-08-SC online at http://walrus.wr.usgs.gov/infobank/s/s808sc/html/s-8-08-sc.meta.html. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Subjects
- Oceans
- Elevation
- California
- Santa Barbara County (Calif.)
- Pacific Ocean
- Coasts
- Digital elevation models
- Remote sensing
- Bathymetric maps
- Geomorphology
- Multibeam mapping
- Submarine topography
- Ocean bottom
- Seismic reflection method
- Imagery and Base Maps
- Datasets
Geospatial coordinates
- Bounding Box: BBOX (-120.1932157, -119.9927572, 34.5440969, 34.3780515)
- Geometry: BBOX (-120.1932157, -119.9927572, 34.5440969, 34.3780515)
Provider
Stanford
Rights
- Access rights: Public
Citation
Finlayson, David P., Dartnell, Peter, Phillips, Eleyne L., Golden, Nadine E., Pacific Coastal and Marine Science Center. Bathymetry Hillshade: Offshore of Refugio Beach, California, 2015. Geological Survey (U.S.). Raster data. https://purl.stanford.edu/sd434vw6164
Format
GeoTIFF
Languages
- English