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Filters Date Types (for Date Range) Contacts PCMSC Science Data Coordinator Pacific Coastal and Marine Science Center U.S. Geological Survey U.S. Geological Survey - ScienceBase Natural Hazards More... Categories Data (15) Tag Types Theme (72) Tags (with Scheme=USGS Thesaurus) geochemistry (11) rare earth elements (8) mass spectroscopy (7) fires (5) grab sampling (4) toxic trace element contamination (4) carbon isotope analysis (3) More... View Results as: JSON ATOM CSV

Parent and alkylated polycyclic aromatic hydrocarbons (PAHs) in watershed soil and reef sediment at Olowalu, Maui, 2022 Seventy six parent and alkylated polycyclic aromatic compounds, including polycyclic aromatic hydrocarbons (PAHs), were quantified in watershed and reef sediment from Olowalu, Maui, in February 2022 to explore urban and wildfire effects. Sample locations and total organic carbon contents (OC) are available in the accompanying file OlowaluWatershedReef2022_compositions.csv. 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 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 Eelgrass and substrate characteristics in Bellingham Bay, Washington, July 2019 and July-August 2020 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, and three subtidal sites (grain-size and TOC only) on July 11, 2019. Categories: Data; Tags: Aquatic Biology, Aquatic vegetation, Bay, Bellingham Bay, CMHRP, All tags... Carbon isotope analysis, 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, Sedimentology, Substrate, Tidal flat, U.S. Geological Survey, USGS, Washington State, Whatcom County, environment, geoscientificInformation, Fewer tags Geochemistry of surface sediment and sediment cores in Bellingham Bay, Whatcom County, Washington, in February 2020 Geochemical data are reported for surface sediments and long sediment cores from Bellingham Bay, Whatcom County, Washington, collected in early February 2020 after flood conditions on the Nooksack River. Data include total organic carbon content (TOC), carbonate content (CaCO3), ratios of stable carbon 13/12 isotopes (d13C), ratios of total carbon to total nitrogen (C:N), short-lived cosmogenic radionuclide activities (Beryllium-7, Cesium-137, and excess Lead-210), and elemental chemistry. Categories: Data; Tags: Bellingham Bay, CMHRP, Coastal and Marine Hazards and Resources Program, Geochemistry, Mercury analysis, All tags... Nooksack River, PCMSC, Pacific Coastal and Marine Science Center, Radiometric dating, Sediment geochemistry, Stable isotope analysis, Substrate, U.S. Geological Survey, USGS, Whatcom County, environment, geochemistry, geoscientificInformation, grab sampling, mass spectroscopy, rare earth elements, toxic trace element contamination, Fewer tags Geochemistry of fine sediment from San Francisco Bay shoals (2012) and tributaries (2010, 2012, 2013) Elemental chemistry and weight percent of the less than 0.063 mm fine sediment fraction are reported for surface sediments from shoals, the ebb tide delta, local tributaries, and inland rivers that carry sediment to San Francisco Bay, California. Categories: Data; Tags: Alameda Creek, CMHRP, Coastal and Marine Hazards and Resources Program, Corte Madera Creek, Fort Funston, All tags... Geochemistry, Guadelupe River, Marine Geology, Napa River, PCMSC, Pacific Coastal and Marine Science Center, Petaluma River, Sacramento River, San Francisco Bay, San Francisquito Creek, San Joaquin River, San Pablo Bay, Sediment geochemistry, Sonoma Creek, South Bay, Substrate, Suisun Bay, U.S. Geological Survey, USGS, Wildcat Creek, environment, geochemistry, geoscientificInformation, grab sampling, mass spectroscopy, rare earth elements, Fewer tags Metals and PAHs in watershed soil and reef sediment at Olowalu and leeward Maui, February 2022 Fine-sediment elemental chemistry and short-lived cosmogenic radionuclides (Beryllium-7, Cesium-137, and Lead-210) were quantified to describe land-based sediment sources and runoff to Olowalu Reef in February 2022. Charcoal counts, total organic carbon contents, and 76 urban- and wildfire-associated contaminants called polycyclic aromatic hydrocarbons (PAHs) were quantified to explore urban and wildfire effects in watersheds above Olowalu Reef and in reef sediment. Sampling occurred approximately two months after winter flooding and one month after tsunamigenic waves impinged on the Maui shore from the eruption of Hunga-Tonga volcano in the South Pacific. The USGS Coastal and Marine Hazards and Resources Program... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Environmental Health, Geochemistry, Kealaloloa Ridge, All tags... Kihei, Kulanihakoi Gulch, Land Use Change, Maalaea, Manawaipueo Gulch, Marine Geology, Maui, Olowalu Stream, Opunaha Gulch, PCMSC, Pacific Coastal and Marine Science Center, Papalaua, Soil Sciences, Substrate, U.S. Geological Survey, USGS, Ukuhemame Gulch, Waiakoa Gulch, Waikapu Stream, Water Quality, cesium-137 dating, environment, environmental chemistry, fires, fringing reef, geochemistry, geoscientificInformation, lava flow, mercury analysis, radiometric dating, sediment geochemistry, stream, volcanic island, watershed, Fewer tags Metal and other element partitioning in southwest Puerto Rico ultramafic soil, Rio Loco sediment, and Guanica Bay sediment Five-stage sequential extractions were performed on ultramafic soil from Bosque Susua and Guanica Dry Forest, stream sediment from Rios Loco and Yauco, and nearshore sediment from Guanica Bay in southwest Puerto Rico. Sequential extractions showed partitioning of geologically enriched metals and other elements among five phases: 1) adsorbed and calcium-bound, 2) iron-, manganese-oxyhydroxide-bound, 3) crystalline iron-oxide-bound, 4) sulfide-bound, and 5) residual. Total element contents are also reported. Soil and sediment were collected between June 19, 2017, and March 27, 2018. Categories: Data; Tags: Bay, Bosque Estatal de Susua, CMHRP, Coastal and Marine Hazards and Resources Program, Coastal plain, All tags... Geochemistry, Guanica Bay, Island of Puerto Rico, PCMSC, Pacific Coastal and Marine Science Center, Rio Loco, Rio Yauco, River, Sediment, Soil, Substrate, U.S. Geological Survey, USGS, Watershed, environment, geochemistry, geoscientificInformation, mass spectroscopy, soil chemistry, Fewer tags Geochemical and isotopic compositions of stream sediment, parent rock, and nearshore sediment from southwest Puerto Rico, April 2017-June 2018 Geochemical and isotopic compositions were determined in stream sediment and parent rocks collected in April 2017 and June 2017 and in nearshore sediment collected bimonthly in sediment traps from May 2017 to June 2018 in the coastal zone and 12 drainages of southwest Puerto Rico: Rio Loco, Yauco, Guayanilla, Macana, Tallaboa, Matilde, Portugues, Bucana, Inabon, Jacaquas, Descalabrado, and Coamo. Geochemical compositional data include: a) total contents of major, minor, trace, and rare earth elements in the <0.063 mm-diameter fraction of terrestrial (n=53) and nearshore sediment (n=63) and powdered rocks (n=19) analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES) and inductively coupled... Categories: Data; Tags: Bedrock geochemistry, CMHRP, Coastal and Marine Hazards and Resources Program, Geochemistry, Guanica Bay, All tags... Island of Puerto Rico, Isotope geochemistry, Lake Lucchetti, PCMSC, Pacific Coastal and Marine Science Center, Radiometric dating, Rio Bucana, Rio Coamo, Rio Descalabrado, Rio Guayanilla, Rio Inabon, Rio Jacaguas, Rio Loco, Rio Macana, Rio Matilde, Rio Portugues, Rio Tallaboa, Rio Yauco, Sediment geochemistry, Substrate, U.S. Geological Survey, USGS, Valle de Lajas, environment, geochemistry, geoscientificInformation, isotopic analysis, mass spectroscopy, rare earth elements, rocks and deposits, Fewer tags Geophysical properties, geochronologic, and geochemical data of sediment cores collected from San Pablo Bay, California, October 17-20, 2016 Geophysical properties (P-wave velocity, gamma ray density, and magnetic susceptibility), geochronologic (radiocarbon, excess Lead-210, and Cesium-137), and geochemical data (organic carbon content and 60 element contents) are reported for select vibracores collected aboard the S/V Retriever October 17-20, 2016 in San Pablo Bay, California. Geophysical properties were measured with a Geotek Multi-Sensor Core Logger (MSCL). Radiocarbon was measured by accelerator mass spectrometry (AMS). Excess Lead-210 and Cesium-137 activities were measured by gamma-ray counting in a high purity, low background germanium well detector (HPGe). Total organic carbon was measured in bulk sediment. Element contents were determined on... Categories: Data; Tags: Assessments, CMHRP, Coastal and Marine Hazards and Resources Program, Geochemistry, Geology, All tags... Geophysics, Habitat, Hayward-Rodgers Creek Fault, Marine Geology, Material Resources, PCMSC, PES, Pacific Coastal and Marine Science Center, Radiometric dating, San Francisco Bay-Delta Priority Ecosystem Science Program, San Pablo Bay, Sediment geochemistry, State of California, Substrate, U.S. Geological Survey, USGS, benthic foraminifera, carbon-14 analysis, chemical analysis, core analysis, drilling and coring, environment, geochemistry, geoscientificInformation, marine geology, mollusks, oceans, plant, radiometric dating, sea-floor characteristics, vibracoring, wood, Fewer tags Geochemistry of fine-grained sediment in Bellingham Bay, Nooksack River, and small creeks from June 2017 to September 2019 Elemental compositions are reported for the fine fraction of surface sediments from Bellingham Bay (June 2017 and March 2019) and in the fine fraction of streambank sediment from the Nooksack River (September 2017, March 2019, September 2019), Squalicum Creek (March and September 2019), Whatcom Creek (March and September 2019), and Padden Creek (March and September 2019). Major oxide percentages are reported in Nooksack River fine sediment collected in September 2017. Ancillary data for sediment collected during 2017 and 2019 from Bellingham Bay, Nooksack River, and small creeks include: percent weights of gravel, sand, and fines; total organic carbon content (TOC); carbonate content (CaCO3); ratios of stable carbon... Categories: Data; Tags: Bellingham Bay, CMHRP, Chuckanut Bay, Coastal and Marine Hazards and Resources Program, Geochemistry, All tags... Mercury analysis, Mount Baker, Nooksack River, PCMSC, Pacific Coastal and Marine Science Center, Padden Creek, Radiometric dating, Samish Bay, Sediment geochemistry, Squalicum Creek, Stable isotope analysis, Substrate, Table Mountain, U.S. Geological Survey, USGS, Whatcom Creek, environment, geochemistry, geoscientificInformation, grab sampling, mass spectroscopy, rare earth elements, toxic trace element contamination, 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 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 Geochemistry of sediment and organic matter in drainages burned by the Altas and Nuns wildfires in October 2017 and of nearshore seabed sediment in north San Francisco Bay from March to April 2018 Fine-grained sediment was collected from the banks of Napa River, Sonoma Creek, and tributaries in March 2018 and from shallow nearshore areas of the northern reach of San Francisco Bay in April 2018. Bulk sediment was dated using activities of short-lived cosmogenic radionuclides (beryllium-7, cesium-137, and lead-210). Contents of potentially toxic metals and source-rock-indicative elements, including rare earth elements, were quantified in the fine fraction of sediment (particles less than 0.063 mm diameter). Ratios of stable carbon-13/carbon-12 isotopes and total carbon to total nitrogen were determined in sedimentary organic matter. Categories: Data; Tags: Bedrock geochemistry, CMHRP, Carquinez Straight, Coastal and Marine Hazards and Resources Program, Environmental Health, All tags... Geochemistry, Grizzly Bay, Heavy metal pollution, Isotope geochemistry, Napa River, Napa Valley, PCMSC, Pacific Coastal and Marine Science Center, Radiometric dating, San Francisco Bay, San Pablo Bay, Sediment geochemistry, Soil Sciences, Sonoma Creek, Sonoma Valley, Substrate, Suisun Bay, U.S. Geological Survey, USGS, environment, fires, geochemistry, geoscientificInformation, isotopic analysis, mass spectroscopy, rare earth elements, rocks and deposits, toxic trace element contamination, Fewer tags Inorganic compositional data for fine-grained Puget Sound sediment along the Burlington Northern Santa Fe rail line, September 2015 Nearshore surface sediment was collected with a petit ponar grab sampler between April 22 and September 17, 2015, at five sites in Puget Sound, Washington. Four sites were adjacent to the Burlington Northern Santa Fe rail line in urban and non-urban areas, and one site was in an urban area that was not adjacent to the rail line. Total and near-total major, minor, trace, and rare earth element contents of the <0.063 mm sediment fraction were determined by inductively coupled plasma atomic emission spectroscopy and mass spectroscopy. These data accompany Takesue, R.K., and Campbell, P.L., 2019, Contaminant baselines and sediment provenance along the Puget Sound Energy Transport Corridor, 2015: U.S. Geological Survey... Categories: Data; Tags: Chuckanut Bay, Geochemistry, Heavy metal pollution, Nisqually River, Padilla Bay, All tags... Saltwater State Park, Sediment geochemistry, Snohomish River, Substrate, environment, geoscientificInformation, grab sampling, mass spectroscopy, rare earth elements, toxic trace element contamination, 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