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Coral geochemistry time series from Kahekili, west Maui Geochemical analysis (including stable boron, boron:calcium ratio, and carbon and oxygen isotopes) were measured from coral cores collected in July 2013 from the shallow reef at Kahekili in Kaanapali, west Maui, Hawaii from scleractinian Porites lobata. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Geochemistry, Habitat, Kaanapali, All tags... Maui, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Hawaii, U.S. Geological Survey, USGS, alkalinity, chemical analysis, chemical oceanography, coelenterates, coral reefs, environment, fragile ecosystems, geochemistry, geoscientificInformation, marine chemistry, nutrients, ocean acidification, oceans, Fewer tags Computed tomography (CT) scans, photographs, X-ray fluorescence (XRF) scans, geochemistry, X-ray diffraction (XRD), and gamma-ray bulk density data of push cores from Loki's Castle and Favne vent fields, Mohns Ridge This data release contains computed tomography (CT) scans, photographs, X-ray fluorescence (XRF) scans, geochemical data, X-ray diffractograms (XRD), and gamma-ray bulk density of push cores and sediment subsamples from those cores collected in 2018 and 2019 from Loki’s and Favne Vent Fields, Mohns Ridge, part of the Arctic Mid-Atlantic Ridge. For the geochemical section of the release, data include major, minor and trace element concentrations, location information (latitude, longitude, depth), analytical methods, and instrument detection limits where available. Categories: Data; Tags: Arctic Mid Atlantic Ridge, Arctic Ocean, Assessments, CMHRP, Coastal and Marine Hazards and Resources Program, All tags... Economic Geology, Energy Resources, Favne Vent Field, Geochemistry, Global Ocean Mineral Resources, Greenland Sea, Loki's Castle Vent Field, Marine Geology, Material Resources, Mineral Resources, Mineral Resources, Mohns Ridge, Nonliving Resources, Norwegian Sea, PCMSC, Pacific Coastal and Marine Science Center, Physical/Chemical Features, U.S. Geological Survey, USGS, chemical analysis, chemical analysis, earth sciences, geochemistry, geoscientificInformation, marine geology, mass spectroscopy, metallic mineral resources, mineral resources, oceans, push coring, sediment geochemistry, Fewer tags Elemental chemistry, radionuclides, and charcoal in watershed soil and reef sediment at Olowalu, Maui, 2022 Fine-sediment elemental chemistry, short-lived cosmogenic radionuclides (Beryllium-7, Cesium-137, and Lead-210), charcoal counts, and total organic carbon contents were quantified to describe urban and wildfire effects and land-based sediment sources and runoff to Olowalu Reef in February 2022. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Kealaloloa Ridge, Kihei, Kulanihakoi Gulch, All tags... Maalaea, Manawaipueo Gulch, Maui, Olowalu Stream, Opunaha Gulch, PCMSC, Pacific Coastal and Marine Science Center, Papalaua, Substrate, U.S. Geological Survey, USGS, Ukumehame Gulch, Waiakoa Gulch, Waikapu Stream, beryllium-7 dating, cesium-137 dating, environment, environmental chemistry, fires, fringing reef, geochemistry, geoscientificInformation, lava flow, mercury analysis, metal elements, radiometric dating, rare earth elements, river discharge, sediment geochemistry, sediment transport, soil chemistry, stream, volcanic island, watershed, Fewer tags Projected coastal flooding 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 Islands This data release provides flood depth GeoTIFFs based on sea-level rise and wave-driven total water levels for the coast of the most populated Hawaiian Islands of Oahu, Molokai, Kauai, Maui, and Big Island. Oceanographic, coastal engineering, ecologic, and geospatial data and tools were combined to evaluate the increased risks of storm-induced coastal flooding in the populated Hawaiian Islands 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-m2 resolution along the 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 rise scenarios. Categories: Data; Tags: CMHRP, Climate Change, Coastal Processes, Coastal and Marine Hazards and Resources Program, Earth sciences, All tags... Effects of climate change, Environmental Equity, Environmental Justice, Flooding, Floods, Geospatial Datasets, Hawaiian Islands, Island of Hawai'i, Kaua'i, Mathematical modeling, Maui, Moloka'i, O'ahu, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Predictions, Sea level change, Sea-level Change, Spatial Analysis, State of Hawaii, Storms, U.S. Geological Survey, USGS, Waves, environment, geoscientificInformation, oceans, Fewer tags Projected coastal flooding extents 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 Mariana Islands This data release provides flooding extent polygons based on sea-level rise and wave-driven total water levels for the coast of the most populated Mariana Islands of Guam and Saipan. 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-m2 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 rise scenarios. Categories: Data; Tags: CMHRP, Climate Change, Coastal Processes, Coastal and Marine Hazards and Resources Program, Earth sciences, All tags... Effects of climate change, Environmental Equity, Environmental Justice, Flooding, Floods, Geospatial Datasets, Guam, Mariana Islands, Mathematical modeling, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Predictions, Saipan Island, Sea level change, Sea-level Change, Spatial Analysis, Storms, U.S. Geological Survey, USGS, Waves, environment, geoscientificInformation, oceans, Fewer tags Sediment grain-size data from the Klamath estuary, California Note: this data release has been depecrated. Find the updated version here: https://doi.org/10.5066/P9MAJHNI 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 coarser than 2 mm were sieved using a RO-TAP sieve shaker, and particles finer than 2 mm were... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Del Norte County, Distributions, Klamath basin, All tags... 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 Digital Shoreline Analysis System (DSAS) version 4.4 transects with short-term end-point rate-of-change calculations for the sheltered north coast of Alaska, from Icy Cape to Cape Prince of Wales This dataset consists of short-term (less than 37 years) shoreline change rates for the sheltered north coast of Alaska from Icy Cape to Cape Prince of Wales. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.4, an ArcGIS extension developed by the U.S. Geological Survey. Rates of shoreline change were calculated using an end point rate-of-change (epr) method based on available shoreline data between 1980 and 2016. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate rates of change. 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 Salish Sea Hydrodynamic Model A two-dimensional hydrodynamic model of the Salish Sea was constructed using the Delft3D Flexible Mesh Suite (Deltares, 2020) to simulate still water levels in the past and future and evaluate extreme recurrence water level events accounting for sea level rise and climate change. Three sets of model simulations were performed following Grossman and others (2023). The first simulated the water years (October 1 – September 30) of 2017 to 2020 to validate the model and assess model error. The second simulation used the validated model to evaluate the period 1985-2015, the utility of a computed “remote sea level anomaly predictor” important to understanding of extreme water levels inside the Salish Sea, and to quantify... Categories: Data; Tags: CMHRP, Climate Change, Coastal and Marine Hazards and Resources Program, Distributions, Extreme Weather, All tags... Hazards Planning, Hydrology, Ocean Winds, PCMSC, Pacific Coastal and Marine Science Center, Predictions, Puget Sound, Salish Sea, State of Washington, Storms, U.S. Geological Survey, USGS, Water Resources, Wind, coastal processes, geoscientificInformation, numerical modeling, oceans, water level measurements, Fewer tags Parent and alkylated polycyclic aromatic hydrocarbons (PAHs) and per- and polyfluoroalkyl substances (PFAS) in north San Francisco Bay, Napa River, and Sonoma Creek in 2018 and 2019 Sediment grain-size distributions, stable carbon isotope ratios (d13C), total carbon to total nitrogen ratios (C:N), short-lived radionuclides (Beryllium-7, Cesium-137, and Lead-210), concentrations of 76 parent and alkylated polycyclic aromatic hydrocarbons (PAHs) and concentrations of 33 per- and polyfluoroalkyl substances (PFAS) were measured in the northern reach of San Francisco Bay (San Pablo and Suisun Bays), and in stream beds of the lower reaches of Napa River and Sonoma Creek, 5 months and 20 months after the 2017 Atlas and Nuns wildfires. New sites for sediment geochemistry analyses added 20 months post-fire included the lower reaches of Petaluma Creek and Suisun Slough, and in marsh sediment on Napa... Categories: Data; Tags: Carquinez Straight, Environmental Health, Geochemistry, Grizzly Bay, Napa River, All tags... National Wildlife Refuge, San Francisco Bay, San Pablo Bay, Soil Sciences, Sonoma Creek, Substrate, Suisun Bay, Water Quality, bay, carbon isotope analysis, environment, estuary, fires, geochemistry, geoscientificInformation, marsh, Fewer tags Water-column environmental variables and accompanying discrete CTD measurements collected offshore the U.S. Mid- and South Atlantic (ver. 2.0, July 2022) Various water column variables, including salinity, dissolved inorganic nutrients, dissolved inorganic carbon, and radio-carbon isotopes were measured in samples collected using a Niskin-bottle rosette at selected depths from deepwater sites offshore the US Mid- and South Atlantic from September 2017 to April 2019. CTD (Conductivity Temperature Depth) data were also collected at each depth that a Niskin-bottle sample was collected and are presented along with the water sample data during the following five cruises: PC1704 (USGS field activity 2017-004-FA) in September 2017, ENG615 (USGS field activity 2018-024-FA) in June 2018, AT41 (USGS field activity 2018-042-FA) in August 2018, BMCC-2018 (USGS field activity... Categories: Data, Data Release - Revised; Tags: Atlantic Ocean, CMHRP, CTD measurement, Coastal and Marine Hazards and Resources Program, Geochemistry, All tags... PCMSC, Pacific Coastal and Marine Science Center, South Atlantic Bight, U.S. Geological Survey, USGS, Water Column Features, chemical oceanography, environment, geoscientificInformation, marine chemistry, marine water quality, ocean salinity, ocean temperature, oceans, physical oceanography, Fewer tags Near-shore seawater-column measurements of excess radon (Rn-222) and water levels, Faga'alu Bay, Tutuila, American Samoa, August 2018 This data table includes in-situ near-shore seawater measurements of excess radon (Rn-222) and water levels collected in Faga'alu Bay, Tutuila, American Samoa. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Faga'alu Bay, Faga’alu, Oceans, All tags... PCMSC, Pacific Coastal and Marine Science Center, Territory of American Samoa, Tutuila Island, U.S. Geological Survey, USGS, Water Column Features, geoscientificInformation, marine water quality, physical oceanography, time series datasets, Fewer tags Thermokarst lake water temperature and salinity data collected in 2011 in the vicinity of Arey Lagoon and Barter Island, Alaska Thermokarst lake water temperature and salinity data were collected in 2011 in the vicinity of Arey Lagoon and Barter Island, Alaska. Pond temperatures and salinity (conductivity) were measured along two transects traversing across a wet sedge area. A hand-held YSI 556 MPS (plus or minus 0.5 percent accuracy) with a cable-attached instrument probe was placed in 10-15 cm of water within 1 m of each of the pond edges and allowed to equilibrate, and readings were recorded manually. In all, 35 ponds were sampled over a distance of approximately 1.5 km. 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, flooding, geoscientificInformation, geospatial datasets, numerical modeling, predictions, salinity, temperature, thermokarst lakes, Fewer tags Sorbed-water (H2O-) corrected chemistry for ferromanganese crust samples from the western equatorial Pacific Ocean Ferromanganese crust samples were collected via dredge during four oceanographic research cruises to the western equatorial Pacific Ocean. The location (latitude, longitude, depth) and concentrations of 27 major and trace elements in the most recent growth layers of ferromanganese crusts from 57 dredge sites are presented here, as well as select seawater chemistry at each location. These data were used in statistical analyses to determine how oceanographic conditions affect the chemical composition of ferromanganese crusts throughout the region. The changes in ferromanganese crust composition show that modern measurements of these primary oceanographic parameters, as well as paleoceanographic reconstructions, can... Categories: Data; Tags: Assessments, Baker Island, CMHRP, Coastal and Marine Hazards and Resources Program, Geochemistry, All tags... Gilbert Islands, Global Ocean Mineral Resources, Howland Island, Marine Geology, Marshall Islands, Nonliving Resources, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Samoa, Tokelau, Tuvalu, U.S. Geological Survey, USGS, chemical analysis, chemical analysis, economy, geochemistry, geoscientificInformation, mass spectroscopy, metallic mineral resources, mineral resources, oceans, sediment geochemistry, Fewer tags Digital Surface Models (DSM) from UAS surveys of the beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, August 2017 This portion of the data release presents digital surface models (DSM) of the ocean beach at Fort Stevens State Park, OR, and Benson Beach at Cape Disappointment State Park, WA. The DSMs have resolutions of 10 centimeters per pixel and were derived from structure-from-motion (SfM) processing of aerial imagery collected with unoccupied aerial systems (UAS) during low tides on 7 and 8 August 2017. Unlike a digital elevation model (DEM), the DSMs represent the elevation of the highest object within the bounds of a cell. Vegetation, buildings, and other objects have not been removed from the data. The raw imagery used to create the DSMs was acquired with a UAS fitted with a Ricoh GR II digital camera featuring a global... 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 Multibeam bathymetry data collected in 2015 near Cross Sound, southeast Alaska, during field activity 2015-629-FA In 2015 the U.S. Geological Survey, Pacific Coastal and Marine Science Center, in cooperation with the Alaska Department of Fish and Game (ADFG), collected bathymetry and acoustic-backscatter data near Cross Sound in southeast Alaska using a Reson 7111 multibeam echosounder mounded to the ADFG R/V Solstice. This section of the data release provides the bathymetry data as a GeoTIFF at 10-m spatial resolution. All files have accompanying FGDC metadata. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry, Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Cross Sound, All tags... PCMSC, Pacific Coastal and Marine Science Center, Seafloor Topography, State of Alaska, U.S. Geological Survey, USGS, bathymetry, bathymetry measurement, field observation, geoscientificInformation, geospatial datasets, marine geophysics, multibeam sonar, sea-floor characteristics, seabed, Fewer tags Bathymetry data from Floras Lake, Oregon, June 2018 This portion of the USGS data release presents bathymetry data collected during surveys performed in Floras Lake, Oregon in June 2018 (USGS Field Activity Number 2018-636-FA). Floras Lake is a coastal lake in southern Oregon that is separated from the Pacific Ocean by sand dunes. It is not influenced by tides, although water levels fluctuate seasonally. Lake bed bathymetry data were collected using two personal watercraft (PWCs) equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9-degree beam angle. Depths from the lakebed to the echosounder were calculated using... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMHRP, Cape Blanco, Coastal and Marine Hazards and Resources Program, Curry County, All tags... Echo Sounders, Floras Lake, GPS (Global Positioning System), GPS measurement, Global Positioning System (GPS) observations, PCMSC, Pacific Coastal and Marine Science Center, State of Oregon, U.S. Geological Survey, USGS, Water Depth, bathymetry, bathymetry measurement, elevation, geoscientificInformation, single-beam echo sounder, Fewer tags Acoustic-backscatter data from Floras Lake, Oregon, June 2018 This portion of the USGS data release presents acoustic-backscatter data collected during surveys performed in Floras Lake, Oregon in June 2018 (USGS Field Activity Number 2018-636-FA). Lake bed backscatter data were collected using a personal watercraft (PWC) equipped with a sidescan sonar system and global navigation satellite system (GNSS) receivers. The sonar system consisted of a Tritech Starfish 990F with a 1-MHz transducer and a 0.3-degree horizontal beam width. Output from the GNSS receivers and sonar system were combined in real time on the PWC by a computer running HYPACK hydrographic survey software. Navigation information was displayed on a video monitor, allowing PWC operators to navigate along survey... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: CMHRP, Cape Blanco, Coastal and Marine Hazards and Resources Program, Curry County, Echo Sounders, All tags... Floras Lake, GPS (Global Positioning System), GPS measurement, Global Positioning System (GPS) observations, PCMSC, Pacific Coastal and Marine Science Center, State of Oregon, U.S. Geological Survey, USGS, geoscientificInformation, lake bed, lakebed acoustic reflectivity, lakebed characteristics, substrate, Fewer tags Substrate properties for invertebrate comparisons in Bellingham Bay, Washington, July 2019 and July-August 2020 Sediment grain-size distributions and total organic carbon contents were measured at four intertidal sites and three subtidal sites along the urban waterfront (east shore) of Bellingham Bay, Washington, July 3-11, 2019 and June 6-August 31, 2020. Intertidal substrate was sampled in eelgrass beds, and subtidal substrate was sampled inside and outside of the deep edge of eelgrass beds. Categories: Data; Tags: Bay, Bellingham Bay, CMHRP, Coastal and Marine Hazards and Resources Program, Grain-size analysis, All tags... 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 Water temperature time-series data from nearshore coral reef and anchialine pool locations along the west coast of Hawaii Island (2010-2013) Time-series data of water temperature were collected at 33 locations along the west coast of the Island of Hawaii, including within Kaloko-Honokohau National Historical Park (KAHO), and Puu o Honaunau National Historical Park (PUHO) between 2010 and 2013 in nearshore coral reef and anchialine pool settings. Temperature sensors were attached to fossil limestone, rock or dead coral within otherwise healthy coral reef settings spanning water depths of 0.1 to 8.84 m (0.3 to 29.0 ft). Continuous measurements were made every 10 or 20 minutes. Due to the large amount of data, the dataset has been split into three files. WaterTempTimeSeries_KAHO-KC.csv includes data from nearshore coral reef locations within Kaloko Bay,... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Freeze Face, Hawaii, Honaunau Bay, All tags... Honokohau Small Boat Harbor, Island of Hawaii, Kailua Pier, Kailua-Kona, Kaloko Cut, Kaloko-Honokohau National Historical Park, Keawaiki, Kona, PCMSC, Pacific Coastal and Marine Science Center, Puuhonua O Honanaunau National Historical Park, State of Hawaii, U.S. Geological Survey, USGS, assessments, corals, distributions, diving, habitat, health and disease, oceans, reef ecosystems, sampling, water temperature, Fewer tags Digital Elevation Model of Oxbow Reservoir, Placer County, California, October 2022 This portion of the data release presents a digital elevation model (DEM) of portions of Oxbow Reservoir in Placer County, California. The DEM was created using topographic survey data collected on 26 October 2022, when the reservoir was partially de-watered to allow repairs to the dam infrastructure following the Mosquito Fire. Although the gates of the dam were open during this time, significant portions of the reservoir site remained inaccessible to surveyors due to the continued flow of the Middle Fork American River. Consequently, this DEM covers approximately 50 percent of the total surface area of the reservoir at full pool. The raw topographic data for the DEM were collected using two RTK GNSS backpack rovers... Categories: Data; Tags: Alabama Bar, Bathymetry and Elevation, CHMRP, Coastal and Marine Hazards and Resources Program, Middle Fork American River, All tags... Oxbow Bar, Oxbow Reservoir, PCMSC, Pacific Coastal and Marine Science Center, Placer County, Rubicon River, State of California, U.S. Geological Survey, USGS, elevation, geomorphology, geoscientificInformation, geospatial datasets, topographic mapping, topographic maps, topography, Fewer tags « 1 ... 9 10 11 12 13 »