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Landslides offshore of southern California, 2023 Landslides have been mapped offshore of Southern California. Polygons were mapped from visual interpretation of high-resolution multibeam echosounder data (MBES), single-beam echosounder data, and seismic reflection data. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, PCMSC, Pacific Coastal and Marine Science Center, All tags... Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, landslides, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, Fewer tags Digital maps of submarine landslides and mass wasting features offshore of southern California This data release provides the locations and certain key metrics of landslide features offshore southern California, including landslide perimeters, scarps, evacuation zones, debris aprons, and slide-prone areas in geographic information system (GIS) shapefile format. The offshore region of southern California is a tectonically active area that includes more than 20 fault-bounded basins and ridges that are subject to various types of mass-wasting and landslide processes. The collection of high-resolution seafloor mapping data offshore southern California, mostly within the last 25 years, provide a new data set that forms the basis for the identification and mapping of landslides and slide-related features throughout... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, Geomorphology, Geophysics, All tags... Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, landslides, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, Fewer tags Landslide evacuation zones offshore of Southern California, 2023 Landslide evacuation zones, which represent the areas from which material is removed by landslide processes, have been mapped offshore of Southern California. Polygons were mapped from visual interpretation of high-resolution multibeam echosounder data (MBES) and single-beam echosounder data. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, PCMSC, Pacific Coastal and Marine Science Center, All tags... Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, landslides, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, Fewer tags Landslide scarps offshore of Southern California, 2023 Landslide scarp features have been mapped offshore of Southern California. Polygons were mapped from visual interpretation of high-resolution multibeam echosounder data (MBES) and single-beam echosounder data. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, PCMSC, Pacific Coastal and Marine Science Center, All tags... Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, landslides, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, Fewer tags Quaternary faults offshore of California A comprehensive map of Quaternary faults has been generated for offshore of California. The Quaternary fault map includes mapped geometries and attribute information for offshore fault systems located in California State and Federal waters. The polyline shapefile and matching KML file have been compiled from previously published mapping where relatively dense, high-resolution marine geophysical data exist. The data are accompanied by a PDF containing citations for the compiled source data. Most of the marine geophysical data used for mapping have been processed, merged, and released by the USGS in maps, data releases, and journal publications in support of the California Seafloor Mapping Program and the U.S. West... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, Geophysics, Marine Geology, All tags... PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, earthquake prediction, earthquakes, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, seismic methods, Fewer tags Chirp seismic-reflection data of USGS field activity 2014-645-FA collected in the outer Santa Barbara Channel, California, between 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020) This data release contains 43 chirp sub-bottom profiles that were collected in November of 2014 from the Catalina and Santa Cruz Basins offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center. Data were collected aboard the University of California’s R/V Robert Gordon Sproul on USGS cruise 2014-645-FA. Chirp profiles were collected to assess earthquake and submarine landslide hazards offshore southern California. Categories: Data; Types: Citation; Tags: Avalon, Bathymetry and Elevation, CMHRP, Catalina Basin, Catalina Canyon, All tags... Catalina Escarpment, City of Encinitas, City of Huntington Beach, City of Long Beach, City of San Diego, City of Ventura, Coastal and Marine Hazards and Resources Program, Emery Knoll, Gulf of Santa Catalina, Hueneme Canyon, Osborn Bank, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, San Clemente Island, San Nicolas Island, Sant Barbara Island, Santa Barbara Channel, Santa Barbara County, Santa Catalina Island, Santa Cruz Basin, Santa Cruz Canyon, Santa Cruz Island, Santa Monica Basin, Santa Rosa Island, State of California, Two Harbors, U.S. Geological Survey, USGS, Ventura County, continental margins, geoscientificInformation, geospatial datasets, marine geophysics, minisparker, oceans, seismic reflection profiling, seismic reflection profiling, Fewer tags Landslide mass-wasting zones offshore of Southern California, 2023 Landslide mass-wasting zones have been mapped offshore of Southern California. Polygons were mapped from visual interpretation of high-resolution multibeam echosounder data (MBES) and single-beam echosounder data. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, PCMSC, Pacific Coastal and Marine Science Center, All tags... Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, landslides, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, Fewer tags Multichannel sparker and minisparker seismic-reflection data of USGS field activity 2014-645-FA collected in the outer Santa Barbara Channel, California, between 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020) This data release contains 35 multichannel sparker and 24 multichannel minisparker seismic reflection (MCS) profiles that were collected in November of 2014 from the Catalina and Santa Cruz Basins offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center. Data were collected aboard the University of California’s R/V Robert Gordon Sproul on USGS cruise 2014-645-FA. MCS profiles were collected to assess earthquake and submarine landslide hazards offshore southern California. Categories: Data; Types: Citation; Tags: Avalon, Bathymetry and Elevation, CMHRP, Catalina Basin, Catalina Canyon, All tags... Catalina Escarpment, City of Encinitas, City of Huntington Beach, City of Long Beach, City of San Diego, City of Ventura, Coastal and Marine Hazards and Resources Program, Emery Knoll, Gulf of Santa Catalina, Hueneme Canyon, Osborn Bank, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, San Clemente Island, San Nicolas Island, Sant Barbara Island, Santa Barbara Channel, Santa Barbara County, Santa Catalina Island, Santa Cruz Basin, Santa Cruz Canyon, Santa Cruz Island, Santa Monica Basin, Santa Rosa Island, State of California, Two Harbors, U.S. Geological Survey, USGS, Ventura County, continental margins, geoscientificInformation, geospatial datasets, marine geophysics, minisparker, oceans, seismic reflection profiling, seismic reflection profiling, Fewer tags Multichannel minisparker seismic-reflection data of field activity 2015-651-FA; Chatham Strait and Cross Sound, southeastern Alaska from 2015-08-03 to 2015-08-21 This data release contains high-resolution multichannel seismic (MCS) reflection data collected in August of 2015 to explore marine geologic hazards of inland waterways of southeastern Alaska. Sub-bottom profiles were acquired in the inland waters between Glacier Bay and Juneau, including Cross Sound and Chatham Strait. High-resolution seismic-reflection profiles were acquired to assess evidence for active seabed faulting and submarine landslide hazards. The data were collected aboard the US Geological Survey R/V Alaskan Gyre. The seismic-reflection data were acquired using a 500-Joule minisparker source and a 48-channel Geometrics GeoEel digital streamer. Subbottom acoustic penetration spans up to several hundreds... Categories: Data; Types: Citation; Tags: Bathymetry, Bathymetry and Elevation, CMG, CMGP, Chatham Strait, All tags... Coastal and Marine Geology Program, Continental Margins, Cross Sound, Glacier Bay, Juneau, Lynn Canal, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Alaska, U.S. Geological Survey, USGS, geoscientificInformation, minisparker, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags Landslide debris aprons offshore of southern California, 2023 Landslide debris aprons have been mapped offshore of Southern California. Polygons were mapped from visual interpretation of high-resolution multibeam echosounder data (MBES), single-beam echosounder data, and seismic reflection data. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, PCMSC, Pacific Coastal and Marine Science Center, All tags... Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, landslides, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, Fewer tags Multichannel minisparker seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016 This data release contains 25 multichannel minisparker seismic reflection (MCS) profiles that were collected in February of 2016 from the Catalina Basin offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center in cooperation with the University of Washington. Data were collected aboard the University of Washington’s R/V Thomas G. Thompson on USGS cruise 2016-616-FA. MCS profiles were collected to image the Catalina and San Clemente fault systems as well as the San Gabriel Canyon and Channel system. Tags: Avalon, Bathymetry and Elevation, CMHRP, Catalina Basin, Catalina Canyon, All tags... Catalina Escarpment, City of Encinitas, City of Huntington Beach, City of Long Beach, City of San Diego, Coastal and Marine Hazards and Resources Program, Emery Knoll, Gulf of Santa Catalina, Osborn Bank, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, San Clemente Island, San Nicolas Island, Sant Barbara Island, Santa Barbara Channel, Santa Catalina Island, State of California, Two Harbors, U.S. Geological Survey, USGS, continental margin, geoscientificInformation, geospatial datasets, marine geophysics, minisparker, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags Radiocarbon age dating of biological material from cores collected off British Columbia, Canada and southeastern Alaska, U.S. along the Queen Charlotte-Fairweather fault zone Results of radiocarbon age dating of planktic foraminifera, benthic foraminifera, and pelecypod shell fragments collected from piston cores, trigger weight cores, and IKU grab samples obtained in 2015 and 2017 offshore British Columbia, Canada and southeastern Alaska, U.S. along the Queen Charlotte-Fairweather fault zone. Categories: Data; Tags: British Columbia, CMHRP, Canada, Coastal and Marine Hazards and Resources Program, Dixon Entrance, All tags... Habitat, Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Alaska, Stratigraphy, U.S. Geological Survey, USGS, animals, benthic foraminifera, carbon-14 analysis, chemical analysis, chemical oceanography, environment, foraminifera, fragile ecosystems, geochemistry, geoscientificInformation, invertebrates, marine chemistry, mollusks, oceans, organisms, planktic foraminifera, protists, radiometric dating, Fewer tags Chirp seismic-reflection data of field activity 2015-651-FA; Chatham Strait and Cross Sound, southeastern Alaska from 2015-08-03 to 2015-08-21 This data release contains high-resolution seismic reflection data collected in August of 2015 to explore marine geologic hazards of inland waterways of southeastern Alaska. Sub-bottom profiles were acquired in the inland waters between Glacier Bay and Juneau, including Cross Sound and Chatham Strait. High-resolution seismic-reflection profiles were acquired to assess evidence for active seabed faulting and submarine landslide hazards. The data were collected aboard the US Geological Survey R/V Alaskan Gyre. The seismic-reflection data were acquired using a tow-fish Edgetech 512 chirp subbottom profiler. Subbottom acoustic penetration spans up to several tens of meters, and is variable by location. This data release... Categories: Data; Types: Citation; Tags: Bathymetry, Bathymetry and Elevation, CMG, CMGP, Chatham Strait, All tags... Coastal and Marine Geology Program, Continental Margins, Cross Sound, Glacier Bay, Juneau, Lynn Canal, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Alaska, U.S. Geological Survey, USGS, chirp, geoscientificInformation, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags Chirp seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016 This data release contains 41 chirp sub-bottom profiles that were collected in February of 2016 from the Catalina Basin offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center in cooperation with the University of Washington. Data were collected aboard the University of Washington’s R/V Thomas G. Thompson on USGS cruise 2016-616-FA. Chirp profiles were collected to image the Catalina and San Clemente fault systems as well as the San Gabriel Canyon system. Tags: Avalon, Bathymetry and Elevation, CMHRP, Catalina Basin, Catalina Canyon, All tags... Catalina Escarpment, City of Encinitas, City of Huntington Beach, City of Long Beach, City of San Diego, Coastal and Marine Hazards and Resources Program, Emery Knoll, Gulf of Santa Catalina, Osborn Bank, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, San Clemente Island, San Nicolas Island, Sant Barbara Island, Santa Barbara Channel, Santa Catalina Island, State of California, Two Harbors, U.S. Geological Survey, USGS, chirp, continental Margin, geoscientificInformation, geospatial datasets, marine geophysics, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags