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Mean high water (MHW) shorelines along the coast of California used to calculated shoreline change from 1998 to 2016 This data release contains mean high water (MHW) shorelines for sandy beaches along the coast of California for the years 1998/2002, 2015, and 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. The smoothed contour line was then quality controlled to remove artifacts, as well as remove any contour tool interpretation of human-made infrastructure (such as jetties, piers, and sea walls), using satellite imagery from ArcGIS. 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 Refraction-corrected bathymetric point cloud from the UAS survey of the coral reef off Waiakane, Molokai, Hawaii, 24 June 2018 This portion of the data release presents a bathymetric point cloud from an unoccupied aerial system (UAS) survey of the coral reef off Waiakane, Molokai, Hawaii, on 24 June 2018. The point cloud has been corrected for the effects of refraction using the techniques described in Dietrich (2017a). The point cloud was created from structure-from-motion (SfM) processing of aerial imagery collected using a UAS with a Ricoh GR II digital camera fitted with a circular polarizing filter. During the survey, a pressure sensor was deployed in the survey area to gain an accurate measurement of the water surface elevation (WSE). After a preliminary dense point cloud was derived from SfM processing, the WSE was used to calculate... Tags: Bathymetry and Elevation, CHMRP, Coastal and Marine Hazards and Resources Program, Kalohi Channel, Maui County, All tags... Molokai, PCMSC, Pacific Coastal and Marine Science Center, SfM, State of Hawaii, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, Waiakane, aerial and satellite photography, aerial photography, altimetry, coastal processes, coral reefs, elevation, fringing reef, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, reef, remote sensing, remote sensing, structure from motion, topographic maps, topography, Fewer tags Refraction-corrected bathymetric digital surface model (DSM) from the UAS survey of the coral reef off Waiakane, Molokai, Hawaii, 24 June 2018 This portion of the data release presents a bathymetric digital surface model (DSM) from an unoccupied aerial system (UAS) survey of the coral reef off Waiakane, Molokai, Hawaii, on 24 June 2018. The DSM has a horizontal resolution of 10 centimeters per pixel and has been corrected for the effects of refraction using the techniques described in Dietrich (2017a). The DSM was created from structure-from-motion (SfM) processing of aerial imagery collected using a UAS with a Ricoh GR II digital camera fitted with a circular polarizing filter. During the survey, a pressure sensor was deployed in the survey area to derive an accurate measurement of the mean water surface elevation (WSE). After a preliminary dense point... Tags: Bathymetry and Elevation, CHMRP, Coastal and Marine Hazards and Resources Program, Kalohi Channel, Maui County, All tags... Molokai, PCMSC, Pacific Coastal and Marine Science Center, SfM, State of Hawaii, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, Waiakane, aerial and satellite photography, aerial photography, altimetry, coastal processes, coral reefs, elevation, fringing reef, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, reef, remote sensing, remote sensing, structure from motion, topographic maps, topography, Fewer tags Ship navigation tracklines from a 2018 multibeam survey near Noyes Submarine Canyon, southeast Alaska These metadata describe ship navigation tracklines from a 2018 multibeam echosounder survey near Noyo Submarine Canyon and vicinity, southeast Alaska. Data were collected by the National Oceanic and Atmospheric Administration (NOAA) aboard the NOAA survey vessel Fairweather and the data were post-processed by the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) for PCMSC research projects. The tracklines are provided as a GIS shapefile. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, Dixon Entrance, Noyes Canyon, All tags... PCMSC, Pacific Coastal and Marine Science Center, State of Alaska, U.S. Geological Survey, USGS, field observation, geoscientificInformation, geospatial datasets, marine geophysics, navigation, navigational data, polyline shapefile, tracklines, Fewer tags Wave time-series data collected in 2011 in the vicinity of Arey Lagoon and Barter Island, Alaska Time-series measurements of waves, currents, water levels, sea surface temperatures, ocean salinity, and water, air, and ground temperatures were collected in July through September 2011 in and around Arey Lagoon, near Barter Island, Alaska. Directional wave spectra, currents, water levels, salinity, and bottom and surface water temperatures were measured with a bottom-mounted 1MHz Nortek AWAC, HOBO temperature loggers, and a Solinst Levelogger in ~5m water depth offshore of Arey Island. Within Arey Lagoon, a bottom-mounted frame equipped with a Nortek 1MHz Aquadopp, Solinst Levelogger, and HOBO temperature loggers measured currents, water levels, and water temperatures. Ground temperatures (maximum depth 3 meters... Categories: Data; Tags: Arctic National Wildlife Refuge, Arctic Ocean, Arey Island, Arey Lagoon, Barter Island, All tags... CMHRP, Coastal and Marine Hazards and Resources Program, North Slope, PCMSC, Pacific Coastal and Marine Science Center, State of Alaska, U.S. Geological Survey, USGS, borehole temperature logging, flooding, geoscientificInformation, numerical modeling, ocean currents, ocean salinity, ocean temperature, ocean waves, permafrost, predictions, soil temperature, storm surge, tides (oceanic), Fewer tags High-resolution multibeam bathymetry data collected southwest of Chenega Island, Alaska during field activity 2014-622-FA High-resolution multibeam data were collected by the U.S. Geological Survey (USGS) and the Alaska Department of Fish and Game in May of 2014 southwest of Chenega Island, Alaska. Data were collected aboard the Alaska Department of Fish and Game vessel, R/V Solstice, during USGS field activity 2014-622-FA, using a pole mounted 100-kHz Reson 7111 multibeam echosounder. Tags: Bainbridge Passage, Bathymetry and Elevation, CMHRP, Chenega Island, Coastal and Marine Hazards and Resources Program, All tags... Dangerous Passage, Evans Island, Gulf of Alaska, Icy Bay, Jackpot Bay, Knight Island Passage, Nassau Bay, North Pacific Ocean, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Port Bainbridge, Prince William Sound, State of Alaska, U.S. Geological Survey, USGS, Whale Bay, acoustic methods, bathymetry, bathymetry measurement, geophysics, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, mapping, marine geophysics, multibeam sonar, sea-floor characteristics, seabed, Fewer tags High-resolution multibeam bathymetry data collected southwest of Montague Island, Alaska during field activity 2014-622-FA High-resolution multibeam data were collected by the U.S. Geological Survey (USGS) and the Alaska Department of Fish and Game in May of 2014 southwest of Montague Island, Alaska. Data were collected aboard the Alaska Department of Fish and Game vessel, R/V Solstice, during USGS field activity 2014-622-FA, using a pole mounted 100-kHz Reson 7111 multibeam echosounder. Tags: Bainbridge Passage, Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Dangerous Passage, All tags... Gulf of Alaska, Icy Bay, Jackpot Bay, Knight Island Passage, Montague Island, Montague Strait, Nassau Bay, North Pacific Ocean, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Port Bainbridge, Prince William Sound, State of Alaska, U.S. Geological Survey, USGS, Whale Bay, acoustic methods, bathymetry, bathymetry measurement, geophysics, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, mapping, marine geophysics, multibeam sonar, sea-floor characteristics, seabed, Fewer tags Geochemistry of authigenic carbonates from Cascadia Margin Geochemical analysis of authigenic carbonates from the Cascadia Subduction Zone. Powdered carbonate samples for stable carbon (delta-C-13) and oxygen (delta-O-18) isotopes and carbonate phase were analyzed as a proxy for potential fluid sources, and to better understand how process, such as mixing, and oxidation, can alter the initial fluid isotopic composition and the archived fluid-source signature in the authigenic carbonates. Categories: Data; Tags: CMHRP, Cascadia, Coastal and Marine Hazards and Resources Program, Geochemistry, Marine Geology, All tags... PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Physical/Chemical Features, State of Oregon, State of Washington, U.S. Geological Survey, USGS, chemical analysis, environment, geochemistry, geoscientificInformation, light stable isotopic analysis, marine chemistry, oceans, Fewer tags Grain size data from the Carmel River, central California, 2013 to 2021 (ver. 2.0, March 2022) This data release supersedes version 1, published in 2017 under https://doi.org/10.5066/F74M93HF. Please see Version_History_P9HG8UDS.txt below for more information. Pebble-count data were collected during summer surveys (2013, 2015, 2016, 2017, 2018, 2019, 2020, and 2021) at ten sites along the Carmel River, California. Grain-size measurements were made at four to six transects per site using a 0.5 by 0.5 m sampling frame, with approximately 100 sediment-particle counts per transect. Each transect was defined by coordinates on the left and right sides of the river, and sediment grain sizes were measured at five equally spaced locations within the bankfull channel on the transect defined by those endpoint coordinates... Categories: Data; Tags: CMHRP, Carmel River, Carmel Valley, Coastal and Marine Hazards and Resources Program, Monterey County, All tags... PCMSC, Pacific Coastal and Marine Science Center, San Clemente Dam, Substrate, U.S. Geological Survey, USGS, field inventory and monitoring, grain-size analysis, gravel deposits, inland fishery resources, inlandWaters, river bank, river channel, river reaches, river systems, sediment deposition, sieve-size analysis, Fewer tags X-ray fluorescence (XRF) scans of push cores from Loki's Castle and Favne vent fields, Mohns Ridge, geochem mode This portion of the data release presents X-ray fluorescence (XRF) data from push cores collected from Loki's Castle and Favne vent fields, on the Mohns Ridge, in the Norwegian Sea. These data were collected in 2018 and 2019 (USGS Field Activity 2018-691-DD and 2019-624-FA). The XRF data were collected with the sensor in "geochem" mode and are provided in comma-delimited files (.csv). Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Favne vent field, Greenland Sea, Loki's Castle vent field, All tags... Mineral Resources, Nonliving Resources, Norwegian Sea, PCMSC, Pacific Coastal and Marine Science Center, U.S. Geological Survey, USGS, core analysis, geoscientificInformation, marine geology, oceans, push coring, sediment, Fewer tags X-ray diffraction data (XRD) for sediment subsamples from push cores from Loki's Castle and Favne vent fields, Mohns Ridge This portion of the data release presents X-ray diffractograms of sediment subsamples from push cores collected from Loki's Castle and Favne vent fields, on the Mohns Ridge, in the Norwegian Sea. These data were collected in 2018 and 2019 (USGS Field Activity 2018-691-DD and 2019-624-FA). Location information for the sample is included in each Attribute Definition of this metadata file, as well as in the geochemical data table (LokisMohns_marine_mineral_geochemistry.csv) of this multi-table data release. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Favne vent field, Global Ocean Mineral Resources, Loki's Castle vent field, All tags... Material Resources, Mineral Resources, Mohns Ridge, Nonliving Resources, Norwegian Sea, PCMSC, Pacific Coastal and Marine Science Center, Physical/Chemical Features, U.S. Geological Survey, USGS, X-ray diffraction, core analysis, geoscientificInformation, marine geology, metallic mineral resources, mineral resources, mineralogical analysis, oceans, sediment geochemistry, Fewer tags Projected flooding extents and depths based on 10-, 50-, 100-, and 500-year wave-energy return periods for the Territory of the U.S. Virgin Islands for current and potentially restored coral reefs This part of the data release presents projected flooding extent polygon (flood masks) shapefiles based on wave-driven total water levels for the Territory of the U.S. Virgin Islands. There are 16 associated flood mask and flood depth shapefiles: one for each of four nearshore wave energy return periods (rp; 10-, 50-, 100-, and 500-years), the current scenario (base) and each of the restoration scenarios (structural_25, structural_05, and ecological_25). Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Coral Reef, Habitat, PCMSC, All tags... Pacific Coastal and Marine Science Center, Saint Croix, Saint John, Saint Thomas, St. Croix, St. John, St. Thomas, U.S. Geological Survey, U.S. Virgin Islands, USGS, USVI, United States Virgin Islands, United States of America, Virgin Islands of the United States, coastal processes, coral reef communities, environment, flooding, geoscientificInformation, oceans, reef, reef ecosystems, Fewer tags Multibeam bathymetry, acoustic backscatter, and multichannel minisparker seismic-reflection data of USGS field activity 2016-666-FA collected in the Santa Barbara Basin in September and October of 2016 High-resolution multichannel minkisparker seismic-reflection (MCS) profiles were collected by the U.S. Geological Survey in September and October of 2016 from the northern portion of the Santa Barbara Basin offshore southern California. Data were collected aboard the USGS R/V Parke Snavely and NOAA R/V Shearwater during field activity 2016-666-FA. Data were acquired to support USGS geologic hazards projects to aide hazard assessment within the Santa Barbara Basin. High-resolution multichannel minisparker seismic-reflection, multibeam-bathymetry and acoustic-backscatter data were collected to investigate the causes and consequences of submarine landslides in the Santa Barbara Basin. These data and information are... Tags: Geophysics, Marine Geology, Sedimentology, Seismology, Stratigraphy, All tags... Structural Geology, Fewer tags Sediment grain-size data from the Klamath estuary, California This data release supersedes version 1.0, published in November 2021 at https://doi.org/10.5066/P9CAZIHJ. Versioning details are documented in the accompanying Klamath_Grainsize_VersionHistory.txt file. This data release includes grain-size measurements of sediment samples collected from the substrate surface and uppermost 10 cm of sediment deposits in the Klamath estuary, northern California. Samples were collected using a BMH-60 bed-material sampler deployed from a boat, or by hand trowel from subaerial or shallow-water (less than 0.5 m water depth) regions along the estuary margins and side channels. Sediment grain size was analyzed at the U.S. Geological Survey (USGS) laboratory in Santa Cruz, Calif. Particles... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Del Norte County, Distributions, Geomorphology, All tags... Klamath basin, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, State of California, U.S. Geological Survey, USGS, environment, estuary, field sampling, geoscientificInformation, grain size, grain-size analysis, land surface characteristics, sediment, sediment grain size, Fewer tags Pharmaceuticals and personal care products measured in passive samplers at seven coastal sites off West Maui during February and March 2017 Passive membrane samplers—semipermeable membrane devices and polar organic chemical integrative samplers—were deployed for 22 continuous days at 7 sites along the West Maui, Hawai'i, coastline in February and March 2017 to assess organic contaminants at shallow coral reef ecosystems from diverse upstream inputs. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Environmental Health, Geochemistry, Honokeana, All tags... Honokowai Stream, Honolua, Kahana, Kahekili Beach Park, Maui, Olawalu, Organic Geochemistry, PCMSC, Pacific Coastal and Marine Science Center, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Wahikuli, Water Quality, Water-Quality Parameters, biota, contamination and pollution, coral reefs, environment, fragile ecosystems, ocean, oceans, pharmaceutical contamination, Fewer tags 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 Eelgrass and substrate characteristics in Bellingham Bay, Washington, July 2019 Eelgrass (Zostera marina) characteristics, sediment grain size distributions, sediment total organic carbon contents (TOC), carbon isotope ratios of sediment organic matter, and total carbon to total nitrogen ratios were measured at four lower intertidal sites in Bellingham Bay, Washington, July 2-5, 2019. Categories: Data; Tags: Aquatic vegetation, Bay, Bellingham Bay, CMHRP, Carbon isotope analysis, All tags... Coastal and Marine Hazards and Resources Program, Grain-size analysis, Habitat, PCMSC, Pacific Coastal and Marine Science Center, Physical and chemical characteristics of habitats, Seagrass beds, Sediment, State of Washington, Substrate, Tidal flat, U.S. Geological Survey, USGS, Whatcom County, environment, geoscientificInformation, Fewer tags Aerial imagery from UAS surveys of beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, August 2017 This portion of the data release presents the raw aerial imagery collected during the uncrewed aerial system (UAS) survey conducted on the ocean beaches adjacent to the Columbia River Mouth at the Oregon-Washington border in August 2017. The imagery was acquired using a Department of Interior-owned 3DR Solo quadcopter fitted with a Ricoh GR II digital camera featuring a global shutter. The camera was mounted using a fixed mount on the bottom of the UAS and oriented in an approximately nadir orientation. The Fort Stevens State Park survey was conducted under Oregon Parks and Recreation Department Scientific Research Permit #024-17. Five flights were conducted at Fort Stevens State Park on 7 August 2017, between 16:32... Categories: Data; Tags: Bathymetry and Elevation, Benson Beach, CHMRP, Cape Disappointment, Clatsop County, All tags... Clatsop Spit, Coastal and Marine Hazards and Resources Program, Columbia River, Fort Stevens, North Head, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, State of Oregon, State of Washington, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, aerial and satellite photography, aerial photography, altimetry, elevation, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, remote sensing, remote sensing, topographic maps, topography, Fewer tags Discharge measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA in March, April, and May 2014 Tidal water discharge within two breaches constructed in a former flood-control levee of a restored agricultural area in Port Susan, Washington, was measured repeatedly during several tidal cycles. Measurements were made on March 27, 2014, April 16, 2014, May 18, 2014, and May 29, 2014 at breach PSB1, and on May 29, 2014 at breach PSB2. These data were collected using a boat-mounted Teledyne RDI RiverRay 600 kHz acoustic Doppler current profiler (ADCP) or a Teledyne RDI StreamPro 2000 kHz ADCP, depending on date. ADCP transect data were collected and initially reviewed using WinRiver II software and reprocessing and final review was completed with QRev software. Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, Oceans, PCMSC, All tags... Pacific Coastal and Marine Science Center, Port Susan, Snohomish County, State of Washington, Stillaguamish River, U.S. Geological Survey, USGS, Water Column Features, acoustic doppler current profiling, currents, estuarine currents, geoscientificInformation, oceanography, stream discharge, streamflow, tidal currents, tidal currents, Fewer tags Projected coastal flooding extents and depths for 1-, 20-, and 100-year return interval storms and 0.00, +0.25, +0.50, +1.00, +1.50, +2.00, and +3.00 meter sea-level rise scenarios in the Hawaiian, Mariana, and American Samoan Islands This data release provides flooding extent polygons and flood depth rasters (geotiffs) based on sea-level rise and wave-driven total water levels for the coast of the most populated Hawaiian, Mariana, and American Samoan Islands. Oceanographic, coastal engineering, ecologic, and geospatial data and tools were combined to evaluate the increased risks of storm-induced coastal flooding due to climate change and sea-level rise. We followed risk-based valuation approaches to map flooding due to waves and storm surge at 10 square meter resolution along these islands’ coastlines for annual (1-year), 20-year, and 100-year return-interval storm events and +0.25 m, +0.50 m, +1.00 m, +1.50 m, +2.00 m, and +3.00 m sea-level... Categories: Data; Tags: CMHRP, Climate Change, Climatology, Coastal Processes, Coastal and Marine Hazards and Resources Program, All tags... Earth sciences, Effects of climate change, Environmental Equity, Environmental Justice, Flooding, Floods, Geography, Geomorphology, Geophysics, Geospatial Datasets, Guam, Hawaiian Islands, Hydrology, Island of Hawaiʻi, Kaua'i, Land Use Change, Mariana Islands, Marine Geology, Mathematical modeling, Maui, Moloka'i, O'ahu, Ofu Island, Olosega Island, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Predictions, Saipan Island, Sea level change, Sea-level Change, Spatial Analysis, State of Hawaii, Storms, Tau Island, Territory of American Samoa, Tutuila Island, U.S. Geological Survey, USGS, Waves, environment, geoscientificInformation, oceans, Fewer tags « 1 2 3 4 5 6 ... 23 »