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Chirp seismic-reflection data of field activity F-02-07-NC collected offshore San Mateo County, California, from 2007-03-22 to 2007-04-06 High-resolution single-channel Chirp seismic-reflection data were collected by the U.S. Geological Survey in March and April 2007 from Pacifica to Half Moon Bay, offshore San Mateo County, California. Data were collected aboard the R/V Fulmar, during field activity F-02-07-NC. Chirp data were collected using an EdgeTech 512 chirp subbottom system and recorded with a Triton SB-Logger. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Elevation, Half Moon Bay, All tags... North Pacific Ocean, Oceans, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Pacifica, San Francisco, San Mateo County, State of California, U.S. Geological Survey, USGS, geoscientificinformation, geospatial datasets, marine geophysics, seismic reflection profiling, sub-bottom profiling, Fewer tags Vibracore CT scans from the San Lorenzo River This data release contains information on computed tomography (CT) images of a vibracore that was collected by the U.S. Geological Survey in 2019. A site next to the San Lorenzo River in Henry Cowell Redwoods State Park, California, was cored to understand the history of recent vertical incision and floodplain abandonment. The core was split into 3 segments after collection. Each segment was scanned using a Geotek Rotating X-ray CT (RXCT) System and CT reconstruction was performed using Geotek reconstruction software. Geotek CT_Quickview software was used to select a representative down-core orthogonal slice from each core segment and the Geotek AddRuler software was used to display core-lengths in each image. The... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Core Analysis, Erosion, Geomorphology, All tags... Henry Cowell Redwoods State Park, Hydrology, Land Use Change, Nonliving resources, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, River, San Lorenzo River, Sediment, State of California, U.S. Geological Survey, UCSC, USGS, United States of America, University California Santa Cruz, geoscientificInformation, Fewer tags Offshore baseline generated to calculate bluff change rates for the north coast of Barter Island, Alaska This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics for the coastal bluffs at Barter Island, Alaska for the time period 1950 to 2020. This baseline layer serves as the starting point for all transects cast by the DSAS application and can be used to establish measurement points used to calculate bluff-change rates. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arctic National Wildlife Refuge, Arctic Ocean, Barter Island, CMHRP, Coastal and Marine Hazards and Resources Program, All tags... DSAS, Digital Shoreline Analysis System, North Slope, PCMSC, Pacific Coastal and Marine Science Center, Physical habitats and geomorphology, State of Alaska, U.S. Geological Survey, USGS, coastal erosion, coastal processes, environment, geomorphology, geoscientificInformation, geospatial datasets, oceans, permafrost, shoreline accretion, Fewer tags Gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California This data release contains information on gravity cores that were collected by the U.S. Geological Survey in the area of San Pablo Bay and Carquinez Strait, California in 1990, 1991, and 2000. Ten (10) pdf files describe gravity cores that were split, photographed, and imaged by X-rays, and another pdf file contains a core-log legend. In addition, a shapefile provides sample collection data. Seventy-two gravity cores were collected by the U.S. Geological Survey in 1990, 1991, and 2000 from San Pablo Bay and Carquinez Strait, California. Gravity cores from San Pablo Bay contain bioturbated laminated silts and sandy clays, whole and broken bivalve shells (mostly mussels), fossil tube structures, and fine plant or... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, Carquinez Strait, Marine Geology, Oceans > marine sediments > sedimentation, San Francisco Bay, All tags... San Pablo Bay, USA, environment, geoscientificInformation, gravity coring, oceans, stratigraphy, Fewer tags Offshore baseline generated to calculate shoreline change rates for the north coast of Alaska, Icy Cape to Cape Prince of Wales This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics for the exposed coast of Alaska from Icy Cape and Cape Prince Wales for the time period 1948 to 2016. This baseline layer serves as the starting point for all transects cast by the DSAS application and can be used to establish measurement points used to calculate shoreline-change rates. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arctic, Bering Land Bridge National Preserve, CMHRP, Cape Espenberg, Cape Krusenstern National Monument, All tags... Cape Lisburne, Cape Prince of Wales, Cape Thompson, Chukchi Sea, Coastal and Marine Hazards and Resources Program, DSAS, Deering, Digital Shoreline Analysis System, Distributions, Icy Cape, Kivalina, Kotzebue Sound, North Slope, PCMSC, Pacific Coastal and Marine Science Center, Physical/Chemical Features, Point Hope, Point Lay, Red Dog Dock, Shishhmaref, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, Wales, coastal processes, environment, geoscientificInformation, oceans, shoreline accretion, shoreline erosion, Fewer tags Geology and geomorphology--Offshore of Aptos Map Area, California This part of DS 781 presents data for the geologic and geomorphic map of the Offshore Aptos map area, California. The vector data file is included in "Geology_OffshoreAptos.zip," which is accessible from https://doi.org/10.5066/F7K35RQB. These data accompany the pamphlet and map sheets of Cochrane, G.R., Johnson, S.Y., Dartnell, P., Greene, H.G., Erdey, M.D, Dieter, B.E., Golden, N.E., Hartwell, S.R., Ritchie, A.C., Kvitek, r.G., Maier, K.L., Endris, C.A., Davenport, C.W., Watt, J.T., Sliter, R.W., Finlayson, D.P., and Krigsman, L.M., (G.R. Cochrane and S.A. Cochran, eds.), 2016, California State Waters Map Series—Offshore of Aptos, California: U.S. Geological Survey Open-File Report 2016–1025, 43 p., 10 sheets,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aptos, CMHRP, Capitola, Coastal and Marine Hazards and Resources Program, Continental/Island Shelf, All tags... Marine Nearshore Subtidal, Marine Offshore Subtidal, Northern California Ecoregion, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Rock Substrate, Santa Cruz County, Soquel, State of California, Transform Continental Margin, U.S. Geological Survey, USGS, Unconsolidated Mineral Substrate, distributions, environment, geologic mapping, geologic maps, geoscientificInformation, imageryBaseMapsEarthCover, marine geology, marine geology, oceans, physical habitats and geomorphology, sea-floor characteristics, seabed, Fewer tags Geomorphic habitat units derived from 2012 aerial imagery and elevation data for the Elwha River estuary, Washington Estuary geomorphic units delineated at a scale of 1:1500 using a combination of (a) 30 August 2012 0.15 meter resolution NPS Elwha PlaneCam aerial imagery; and (b) elevation-colored and hillshaded digital elevation models from USGS backpack/jetski topobathy surveys (28 August 2012) for areas < MHHW and aerial lidar surveys (17 October 2012) for elevations > MHHW. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Clallam County, Elwha River, Olympic Peninsula, Port Angeles, United States of America, All tags... Washington, coastal ecosystems, coastal processes, dam, dam removal, ecological change, ecological processes, environment, geomorphology, geoscientificInformation, habitats, human impacts, human impacts on habitats, vegetation, Fewer tags Navigation data for marine geophysical data collected between Point Sal and Refugio State Beach (southern California) during field activity 2014-632-FA from 07/17/2014 to 08/02/2014 This dataset includes navigation data for marine geophysical data, collected by the U.S. Geological Survey (USGS) in 2014, between Point Sal and Refugio State Beach in southern California. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bathymetry, CMHRP, Coastal and Marine Hazards and Resources Program, Cojo Ranch, Continental Margins, All tags... Government Point, Hollister Ranch, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Point Conception, Point Sal, Point Sal State Beach, Refugio Beach, Santa Barbara County, State of California, U.S. Geological Survey, USGS, geoscientificInformation, geospatial datasets, marine geophysics, navigational data, oceans, seismic reflection profiling, Fewer tags Footprints and producers of source data used to create northern portion of the high-resolution (1 m) San Francisco Bay, California, digital elevation model (DEM) Polygon shapefile showing the footprint boundaries, source agency origins, and resolutions of compiled bathymetric digital elevation models (DEMs) used to construct a continuous, high-resolution DEM of the northern portion of San Francisco Bay. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bathymetry and Elevation, CMHRP, Carquinez Strait, Coastal and Marine Hazards and Resources Program, Digital Elevation Model (DEM) 1 meter, All tags... PCMSC, Pacific Coastal and Marine Science Center, San Francisco Bay, San Pablo Bay, Suisun Bay, U.S. Geological Survey, USGS, digital elevation models, elevation, geographic information systems, geospatial datasets, lidar, multibeam echo sounder, single-beam echo sounder, Fewer tags Historical shoreline vectors for barrier islands and spits along the north coast of Alaska between Cape Beaufort and the U.S.-Canadian border, 1947 to 2019 A suite of morphological metrics were derived from existing shoreline and elevation datasets for barrier islands and spits located along the north-slope coast of Alaska between Cape Beaufort and the U.S.-Canadian border. This dataset includes shoreline vectors, including data source and acquisition date, from five time periods: 1950s, 1980s, 2000s, 2010s, and 2020s. The shoreline vectors were combined to produce polygons upon which the metrics were calculated. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arctic, Beaufort Sea, CMHRP, Chukchi Sea, Coastal and Marine Hazards and Resources Program, All tags... North Slope, North Slope coast, PCMSC, Pacific Coastal and Marine Science Center, Physical habitats and geomorphology, State of Alaska, U.S. Geological Survey, USGS, barrier island, barrier island migration, barrier spit, coastal processes, geoscientificInformation, permafrost, shoreline change, Fewer tags Shoreline change rates along the coast of California from 1998 to 2016 This dataset contains California shoreline change rates derived from mean high water (MHW) shorelines from 1998 (in Central and Southern California) and 2002 (in Northern California) to 2016. The MHW elevation in each analysis region (Northern, Central, and Southern California) maintained consistency with that of the National Assessment of Shoreline Change. The operational MHW line was extracted from Light Detection and Ranging (LiDAR) digital elevation models (DEMs) using the ArcGIS smoothed contour method. Within the Digital Shoreline Analysis System (DSAS), end-point rates (EPR) of shoreline change were calculated between the 1998/2002 and the 2016 shorelines at a transect spacing of 50 meters to provide a long-term... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, CenCal, Central California, Climate Change, ClimatologyMeteorologyAtmosphere, All tags... Coastal and Marine Hazards and Resources Program, El Nino events, El Nino-Southern Oscillation, NorCal, Northern California, Oceans, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Sea-level Change, SoCal, Southern California, State of California, Storms, U.S. Geological Survey, USGS, coastal erosion, sea level change, waves, Fewer tags Bathymetric measurements of Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015, from personal watercraft This portion of the USGS data release presents elevation data for Little Holland Tract in the Sacramento-San Joaquin River Delta, California. During May and June of 2015, a team of scientists from the USGS Pacific Coastal and Marine Science Center (PCMSC) conducted multiple surveys (USGS Field Activity 2015-642-FA) to collect topographic and bathymetric data in Little Holland Tract, located in the Sacramento-San Joaquin River Delta between Liberty Island and the Sacramento Deep Water Ship Channel. Bathymetric mapping was conducted at high tide using a personal watercraft (PWC) equipped with echosounders. The PWC platform consisted of survey grade Trimble R7 global navigation satellite system (GNSS) receivers with... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, PCMSC, Sacramento-San Joaquin Delta, bathymetry measurement, data release Habitat--Offshore of Aptos, California This part of DS 781 presents data for the habitat map of the seafloor of the Offshore of Aptos map area, California. The vector data file is included in "Habitat_OffshoreAptos.zip," which is accessible from https://doi.org/10.5066/F7K35RQB. These data accompany the pamphlet and map sheets of Cochrane, G.R., Johnson, S.Y., Dartnell, P., Greene, H.G., Erdey, M.D, Dieter, B.E., Golden, N.E., Hartwell, S.R., Ritchie, A.C., Kvitek, r.G., Maier, K.L., Endris, C.A., Davenport, C.W., Watt, J.T., Sliter, R.W., Finlayson, D.P., and Krigsman, L.M., (G.R. Cochrane and S.A. Cochran, eds.), 2016, California State Waters Map Series—Offshore of Aptos, California: U.S. Geological Survey Open-File Report 2016–1025, 43 p., 10 sheets,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aptos, CMHRP, Coastal and Marine Hazards and Resources Program, Continental/Island Shelf, Fisheries, All tags... Marine Nearshore Subtidal, Marine Offshore Subtidal, Northern California Ecoregion, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Rock Substrate, San Cruz County, Soquel, State of California, Transform Continental Margin, U.S. Geological Survey, USGS, Unconsolidated Mineral Substrate, bathymetry, benthos, benthos, distributions, ecosystems, environment, geoscientificInformation, habitat, habitats, habitats, imageryBaseMapsEarthCover, multibeam sonar, oceans, physical habitats and geomorphology, sea-floor characteristics, seabed, Fewer tags Offshore baseline generated to calculate shoreline change rates near Barter Island, Alaska This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics for the shorelines near Barter Island, Alaska for the time period 1947 to 2020. This baseline layer serves as the starting point for all transects cast by the DSAS application and can be used to establish measurement points used to calculate shoreline-change rates. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arctic National Wildlife Refuge, Arctic Ocean, Barter Island, CMHRP, Coastal and Marine Hazards and Resources Program, All tags... DSAS, Digital Shoreline Analysis System, North Slope, PCMSC, Pacific Coastal and Marine Science Center, Physical habitats and geomorphology, State of Alaska, U.S. Geological Survey, USGS, coastal erosion, coastal processes, environment, geomorphology, geoscientificInformation, geospatial datasets, oceans, permafrost, shoreline accretion, Fewer tags 10 meter contours Santa Barbara Channel Geohab This data release contains GIS data generated by USGS for use in a BOEM-funded project to compare natural rockfish nursery habitat to habitat created by manmade structures in the eastern Santa Barbara Channel. The contours were created from published data and digital elevation models (DEMs) of Carignan and others (2009) and Dartnell and others (2012). Contours were generated using the ESRI Contour tool in spatial analysit. The contour interval is 10 meters. The contours were clipped to exclude areas outside the BOEM rockfish nurseries study area. Dartnell, P., Finlayson, D.P., Ritchie, A.C., Cochrane, G.R., and Erdey, M.D., 2012, Bathymetry and acoustic backscatter-outer mainland shelf, eastern Santa Barbara Channel,... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: BOEM, Bathymetry, Bathymetry and Elevation, CMGP, Multibeam, All tags... Ocean Floor Topography, Oceans > Bathymetry/SeafloorTopography > Bathymetry, Oceans > Bathymetry/SeafloorTopography > Seafloor Topography, Pacific Coastal and Marine Science Center, Pacific Ocean, Santa Barbara Channel, State of California, U.S. Geological Survey, USGS, bathymetry, data release, elevation, environment, geoscientificInformation, imageryBaseMapsEarthCover, oceans, Fewer tags Footprints and producers of source data used to create central portion of the high-resolution (1 m) San Francisco Bay, California, digital elevation model (DEM) Polygon shapefile showing the footprint boundaries, source agency origins, and resolutions of compiled bathymetric digital elevation models (DEMs) used to construct a continuous, high-resolution DEM of the central portion of San Francisco Bay. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Digital Elevation Model (DEM) 1 meter, Golden Gate, All tags... PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, San Francisco Bay, U.S. Geological Survey, USGS, digital elevation models, elevation, geographic information systems, geospatial datasets, lidar, multibeam echo sounder, single-beam echo sounder, Fewer tags Faults--Punta Gorda to Point Arena, California This part of DS 781 presents data for the faults of the Punta Gorda to Point Arena, California, region. The vector data file is included in the "Faults_PuntaGordaToPointArena.zip," which is accessible from https://doi.org/10.5066/P9PNNI9H. Faults in the Punta Gorda and Point Arena region are identified on seismic-reflection data based on abrupt truncation or warping of reflections and (or) juxtaposition of reflection panels with different seismic parameters such as reflection presence, amplitude, frequency, geometry, continuity, and vertical sequence. Faults were primarily mapped by interpretation of seismic reflection profile data collected by the U.S. Geological Survey between 2010 and 2012. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Delgada Canyon, Distributions, Fort Bragg, All tags... Mendocino, Noyo Canyon, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical Habitats and Geomorphology, Point Arena, Point Delgada, Punta Gorda, Shelter Cove, Spanish Canyon, State of California, U.S. Geological Survey, USGS, environment, fault, faulting (geologic), geologic structure, geoscientificInformation, geospatial datasets, maps and atlases, marine geology, oceans, sea-floor characteristics, seabed, structural geology, Fewer tags Historical shoreline positions at Barter Island, Alaska for the years spanning 1947 to 2020 This dataset includes one vector shapefile delineating the position of the shorelines at Barter Island, Alaska spanning seven decades, between the years 1947 and 2020. Shoreline positions delineated from a combination of aerial photography, declassified satellite photography, and very-high resolution satellite imagery can be used to quantify the movement of the shoreline through time. These data were used to calculate rates of change every 10 meters alongshore using the Digital Shoreline Analysis System (DSAS) version 5.0. DSAS uses a measurement baseline method to calculate rate-of-change statistics. Transects are cast from the reference baseline to intersect each shoreline, establishing measurement points used... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arctic National Wildlife Refuge, Arctic Ocean, Barter Island, CMHRP, Coastal and Marine Hazards and Resources Program, All tags... DSAS, Digital Shoreline Analysis System, North Slope, PCMSC, Pacific Coastal and Marine Science Center, Physical habitats and geomorphology, State of Alaska, U.S. Geological Survey, USGS, coastal erosion, coastal processes, environment, geomorphology, geoscientificInformation, geospatial datasets, oceans, permafrost, shoreline accretion, Fewer tags Chirp seismic-reflection data: San Pablo Bay, California This data release includes chirp seismic-reflection data collected in 2014 aboard the USGS R/V Snavely in San Pablo Bay, part of northern San Francisco Bay. These data were acquired to image the shallow geologic structure, particularly that related to the Hayward and Rodgers Creek Faults. Approximately 200 km of marine seismic-reflection data were collected along primarily northeast and northwest-trending profiles spaced 1-km apart using an Edgetech 512 chirp sub-bottom profiler that was towed alongside the vessel on a sled at the sea surface. Data were acquired using a 2-12 kHz sweep with a 20 ms length fired 6 times per second. Initial processing included subsampling at twice the sample interval to make swell... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bathymetry, Continental Margins, Contra Costa County, Mare Island, Marin County, All tags... PCMSC, Pacific Coastal and Marine Science Center, Pinole, Pinole Point, San Francisco Bay, San Pablo Bay, Sears Point, Solano County, Sonoma County, State of California, Tubbs Island, U.S. Geological Survey, USGS, Vallejo, data release, geoscientificInformation, oceans, seismic-reflection, Fewer tags Still-image frame grabs and benthic habitat interpretation of underwater video footage, March 2014, Faga`alu Bay, American Samoa Underwater video was collected in March 2014 in the nearshore waters of Faga`alu Bay on the island of Tutuila, American Samoa, as part of the U.S. Geological Survey Coastal and Marine Geology Program's Pacific Coral Reefs Project. This dataset includes 2,119 still images extracted from the video footage every 10 seconds and an Environmental Systems Research Institute (ESRI) shapefile of individual still-image locations with benthic habitat interpretations for each image. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: American Samoa, Benthic Habitat, Biological Occurrence, CMG, CMGP, All tags... Coastal and Marine Geology Program, Coral Reefs, Faga`alu Bay, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Remote Sensing, Substrate, Tutuila, U.S. Geological Survey, USGS, biota, boundaries, data release, ecosystem monitoring, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, oceans, relative abundance analysis, underwater photography, videography, Fewer tags « 1 2 3 4 »