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Model parameter input files to compare effects of stream discharge scenarios on sediment deposition and concentrations around coral reefs off west Maui, Hawaii This dataset consists of physics-based Delft3D model and Delwaq model input files used in modeling sediment deposition and concentrations around the coral reefs of west Maui, Hawaii. The Delft3D models were used to simulate waves and currents under small (SC1) and large (‘SC2’) wave conditions for current stream discharge (‘Alt1’) and stream discharge with watershed restoration (‘Alt3’). Delft3D model results were subsequently used as forcing conditions for Delwaq models to simulate sediment transport and dispersion. The Delwaq models were used to simulate sediment transport and concentrations under the same two wave and stream discharge scenarios. The Delwaq models were run using forcing conditions generated by... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Environmental Health, Geography, Geomorphology, All tags... Hydrology, Island of Maui, Land Use Change, Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, State of Hawaii, U.S. Geological Survey, USGS, coastal processes, coastal processes, coral reefs, geoscientificInformation, hazards, numerical modeling, oceans, reef, water circulation, water column features, waves, Fewer tags Cascadia subduction zone database: compilation of published datasets relevant to Cascadia subduction zone earthquake hazards and tectonics (2022) In this database, we compile and host several available onshore and offshore geologic, paleoseismic, geophysical, and instrumental datasets along the Cascadia subduction zone. The ScienceBase data release and downloadable map package is accompanied by an ArcGIS online map and StoryMap. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Geophysics, Marine Geology, Remote Sensing, Sedimentology, All tags... Seismology, Stratigraphy, Structural Geology, USGS Science Data Catalog (SDC), geology, geophysics, Fewer tags Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, August 2022 Two dams on the Elwha River, Washington State, USA trapped over 20 million m3 of sediment, reducing downstream sediment fluxes and contributing to erosion of the river's coastal delta. The removal of the Elwha and Glines Canyon dams between 2011 and 2014 induced massive increases in river sediment supply and provided an unprecedented opportunity to examine the response of a delta system to changes in sediment supply. The U.S. Geological Survey (USGS) developed an integrated research program aimed at understanding the ecosystem responses following dam removal. The research program included repeated surveys of beach topography, nearshore bathymetry, and surface sediment grain size to quantify changes in delta morphology... Categories: Data; Tags: Geomorphology, Sedimentology Suspended-sediment concentration data from water samples collected in 2016-17 in Grand Bay, Alabama and Mississippi Suspended-sediment transport is a critical element governing the geomorphology of tidal marshes and estuaries. Marsh elevation, relative to sea level, is maintained by both organic material and the deposition of inorganic sediment. Additionally, horizontal marsh extent is altered by lateral erosion and accretion. In wetlands within and near Grand Bay National Estuarine Research Reserve, parts of the salt marsh are eroding relatively rapidly. To understand the connection between sediment fluxes and these processes, the U.S. Geological Survey made oceanographic and water-quality measurements from August 2, 2016, to January 28, 2017, to quantify suspended-sediment concentration and sediment transport in tidal channels... Categories: Data; Tags: Bayou Heron, Bayou Middle, Geomorphology, Grand Bay, Grand Bay National Estuarine Research Reserve, All tags... Grand Bay National Wildlife Refuge, Kreole, Marine Geology, Middle Bayou, Mississippi, Sedimentology, Water Quality, inlandWaters, oceans, sediment transport, suspended material (water), Fewer tags Airborne magnetic and radiometric survey, Charleston, South Carolina and surrounds, 2019 This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over Charleston, South Carolina and the surrounding region. These data were collected to better understand earthquake hazards in the Charleston seismic zone by imaging structural features in the crystalline basement and to image heavy mineral sands containing titanium, zirconium, and rare earth elements using radiometric data (gamma spectrometry), which is sensitive to thorium in monazite. This survey represents a collaborative effort by the U.S. Geological Survey (USGS) Earthquake Hazards Program, Mineral Resources Program, National Cooperative Mapping Program, and Earth Mapping Resource Initiative... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Berkeley County, Charleston, Charleston County, Clarendon County, Colleton County, All tags... Dorchester County, EHP, Earth Mapping Resources Initiative, EarthMRI, Earthquake Hazards Program, Economic Geology, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Georgetown County, MRP, Mineral Resources, Mineral Resources Program, NCGMP, National Cooperative Geologic Mapping Program, Orangeburg County, Sedimentology, Seismology, South Carolina, Structural Geology, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, Williamsburg County, aeromagnetic surveying, aeroradiometric surveying, airborne geophysical survey, economy, geophysics, geoscientificInformation, geospatial datasets, potassium, thorium, uranium, Fewer tags Grain size and charcoal abundance in sediment samples from Los Padres reservoir, Carmel River watershed, California Sediment samples were collected from Los Padres reservoir in the Carmel River watershed, central California coast, between July 11 and 17, 2017, using a CME-45 barge-mounted drill rig, to characterize sedimentary properties in the reservoir deposits following the Soberanes Fire of 2016 and high river flows in winter 2017. Borehole samples were recovered using direct push coring with an Osterberg piston sampler operated by Taber Drilling Company of Sacramento, California, and overseen by AECOM, Inc. Sediment was recovered using a split-barrel sampler and a rotary drill bit was added to the sampler where needed to penetrate coarse sediment. Samples from four boreholes are described in this data release: three sampled... Categories: Data; Tags: CMHRP, Carmel River, Coastal and Marine Hazards and Resources Program, Data Content Subjects, Geomorphology, All tags... Nonliving Resources, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, U.S. Geological Survey, USGS, coastal change hazards topics, datasets, earth sciences, environment, field inventory and monitoring, geoscientificInformation, grain-size analysis, inlandWaters, Fewer tags Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019 This data release supersedes version 1.0, published in July 2021 at https://doi.org/10.5066/P9BHOPEP. Versioning details are documented in the accompanying Whiskeytown_VersionHistory.txt file The Carr Fire ignited in northern California in July 2018, and ultimately burned almost 300,000 acres (approximately half on federal lands), resulting in a federal major-disaster declaration (DR-4382). Approximately 93% of the area within Whiskeytown National Recreation Area was burned extensively during the Carr Fire, including all of the landscape surrounding and draining into Whiskeytown Lake. Whiskeytown Lake, a federally managed reservoir, subsequently acted as a sediment trap for material eroded from hillslopes and streambeds... Categories: Data; Tags: Assessments, CMHRP, Coastal and Marine Hazards and Resources Program, Material Resources, PCMSC, All tags... Pacific Coastal and Marine Science Center, Sedimentology, State of California, U.S. Geological Survey, USGS, Water Resources, Whiskeytown National Recreation Area, geoscientificInformation, grain size, land surface characteristics, reservoir sedimentation, sediment, sediment grain size, 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 Digital terrain models of Spirit Lake blockage and Mount St. Helens debris avalanche, based on 1980-2018 airborne photogrammetry surveys The lateral blast, debris avalanche, pyroclastic flows, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. The debris avalanche and pyroclastic flows filled upper North Fork Toutle River valley and blocked the outlet of Spirit Lake. To mitigate the risk of a catastrophic breach, lake outflow was pumped over the blockage prior to rerouting through a 2.6-kilometer long tunnel completed in 1985 by the U.S. Army Corps of Engineers. However, periodic major repairs to the tunnel have caused responsible parties to reevaluate long-term lake outlet options. This dataset presents a time series of digital terrain models (DTM) of the Spirit Lake blockage... Tags: Ecology, Geography, Geomorphology, Geophysics, Glaciology, All tags... Hydrology, Land Use Change, Remote Sensing, Sedimentology, Soil Sciences, USGS Science Data Catalog (SDC), Volcanology, Water Quality, Water Resources, Fewer tags Field-saturated hydraulic conductivity time series and sediment accumulations following the 2017 Nuns and Tubbs wildfires, Napa and Sonoma Counties, CA, USA This dataset comprises repeat surveys of field-saturated hydraulic conductivity and sorptivity following the October 2017 Nuns and Tubbs wildfires as part of an effort to document soil-hydraulic recovery. A summary table includes associated physiographic properties for each site, including: pre-burn vegetation, lithology, soil burn severity, location, soil texture, and associated van Genuchten parameters determined using Carsel and Parrish (1988). Soil-hydraulic properties were calculated using the model of Zhang (1997) and Vandervaere et al. (2000). We separately include the raw cumulative infiltration measurements used for the calculation of soil-hydraulic properties. Lastly, this dataset includes a survey of... Categories: Data; Tags: Geomorphology, Hydrology, Sedimentology, USGS Science Data Catalog (SDC), fires, All tags... geoscientificInformation, hazard preparedness, percolation, permeability, runoff, sedimentation, Fewer tags Sedimentological and geotechnical analyses of marine sediment cores from the Currituck Landslide Complex and upper slope adjacent to Baltimore Canyon collected on USGS Field Activity 2012-007-FA Twenty-four piston cores (and associated trigger cores) were collected from the source zone of the Currituck Landslide Complex and upper slope adjacent to Baltimore Canyon by the U.S. Geological Survey and the University of Rhode Island Department of Ocean Engineering during an eight-day cruise aboard the R/V Hugh R. Sharp in September/October of 2012. These cores were analyzed for evidence of seafloor mass transport processes, with an emphasis on constraining the age and shallow stratigraphy of the landslide complex. Sedimentological and geotechnical characterization of the cores was carried out through whole core imaging and description, followed by analysis of discrete samples at the USGS Woods Hole Coastal and... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Atlantic, Atlantic, Baltimore Canyon, CC LOI, Cruise ID HRS1209, All tags... Currituck Landslide, Currituck Landslide, Holocene, Hugh R. Sharp, Marine Geology, Maryland, North Carolina, North Carolina, Sedimentology, Stratigraphy, U.S. Continental Shelf, U.S. Geological Survey, USGSWHCMSC, Virginia, WHCMSC Field Activity 2012-007-FA, Woods Hole Coastal and Marine Science Center, clay deposits, core analysis, cores, geology, geoscientificInformation, oceans, piston cores, piston coring, sand deposits, sediment samples, sedimentology, trigger cores, unconsolidated deposits, Fewer tags Sediment properties, charcoal counts, and radiocarbon dates from the Pallett Creek paleoseismic site, San Gabriel Mountains, California (ver. 2.0, February 2024) This data release provides geochemical, sedimentological, and geochronological data from interbedded fluvial and marsh deposits and radiocarbon dates of the section spanning the last 1500 years from the Pallett Creek paleoseismic site, California. The samples were collected to support paleoenvironmental reconstruction of the site and refine several previous investigations of paleoearthquakes along the San Andreas Fault (Sieh, 1978; Sieh, 1984; Sieh et al., 1989; Biasi and Weldon, 1994; Scharer et al., 2011). Geochemical and sedimentological data include grain size, magnetic susceptibility, dry bulk density, percent total organic matter, and percent total carbonate at contiguous 1 cm spacing and carbon (total C)... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Seismology, Stratigraphy, USGS Science Data Catalog (SDC), carbon-14 analysis, All tags... climate change, geoscientificInformation, sedimentology, Fewer tags Grain-size analysis data of sediment samples from the beach and nearshore environments at the Pea Island National Wildlife Refuge DUNEX site, North Carolina in 2021 Note: this data release has been deprecated. Find the updated version here: https://doi.org/10.5066/P9O21FQI These data provide grain-size measurements from sediment samples collected as part of the USGS DUring Nearshore Event eXperiment (DUNEX) site on Pea Island National Wildlife Refuge, NC. DUNEX is a multi-agency, academic, and non-governmental organization collaborative community experiment designed to study nearshore coastal processes during storm events. USGS participation in DUNEX will contribute new measurements and models that will increase our understanding of storm impacts to coastal environments, including hazards to humans and infrastructure and changes in landscape and natural habitats. The grain-size... Categories: Data; Tags: Atlantic Ocean, CMHRP, Coastal and Marine Hazards and Resources, DUNEX, Dare, All tags... Geomorphology, Marine Geology, North Carolina, Pea Island, Sedimentology, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, geoscientificInformation, grab sampling, grain-size analysis, oceans, sediment transport, Fewer tags Field evidence noted in 2008 to 2023 that pertains to sea floods of the past millennium on Anegada, British Virgin Islands This release provides inventories of georeferenced evidence pertaining to extreme waves on Anegada, a low Caribbean island perched south of the Puerto Rico Trench: CORAL BOULDERS AND COBBLES -- Derived offshore, found inland. Boulder star coral Orbicella franksii (37 localities), brain coral Pseudodiploria strigosa (171), elkhorn coral Acropora palmata (36), mustard hill coral Porites astreoides (29). LIMESTONE BOULDERS AND COBBLES -- Derived and found onshore (633). MOLLUSCAN SHELLS -- Queen conch Aliger gigas, discarded by precolonial fishers (12 onshore heaps) and by modern fishers (40 offshore heaps); individual conch shells deposited inland by precolonial sea flood (59); tiger lucine Codakia orbicularis, also... Tags: British Virgin Islands, Caribbean Sea, Geography, Geomorphology, Geophysics, All tags... Marine Geology, Sedimentology, Seismology, Stratigraphy, USGS Science Data Catalog (SDC), Water Resources, biota, carbon-14 analysis, corals, geoscientificInformation, hurricanes, tsunamis, Fewer tags Bathymetry and acoustic backscatter data from Floras Lake, Oregon, June 2018 This publication releases single-beam bathymetry and backscatter datasets acquired by the U.S. Geological Survey (USGS) during surveys performed on Floras Lake, Oregon, in June 2018. Bathymetry and backscatter data were collected using two personal watercraft (PWCs) equipped with single-beam sonar systems, sidescan sonar systems, and global navigation satellite system (GNSS) receivers. Bathymetry data are provided as point data in a comma-separated text file and are projected in cartesian coordinates using the Universal Transverse Mercator (UTM), Zone 10 North, meters coordinate system, with elevations relative to the NAVD88 vertical datum. Acoustic-backscatter data are provided as a GeoTIFF file also projected... Categories: Data; 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, Geomorphology, Geophysics, Global Positioning System (GPS) observations, Oregon, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, U.S. Geological Survey, USGS, Water Depth, bathymetry, bathymetry measurement, elevation, marine geophysics, sea-floor characteristics, single-beam echo sounder, Fewer tags Geochronological data for the Airport East trench site, West Valley fault zone, Salt Lake County, Utah This data release includes geochronological data for the Airport East trench site (40.795359°, -111.950438°) on the Taylorsville fault of the West Valley fault zone (WVFZ). The WVFZ comprises intrabasin faults in the hanging wall of the Wasatch fault zone in the northern part of Salt Lake Valley, Utah. Samples for radiocarbon and luminescence dating were collected from two paleoseismic trenches in August–September 2015. Laboratory data include four optically stimulated luminescence ages and 14 radiocarbon ages for charcoal extracted from bulk sediment samples. This database has been approved for release by the U.S. Geological Survey (USGS). Although this database has been subjected to rigorous review and is substantially... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Salt Lake City, Salt Lake Valley, Sedimentology, Seismology, All tags... Structural Geology, USGS Science Data Catalog (SDC), Utah, age estimation methods, carbon-14 analysis, geochronology, luminescence dating, Fewer tags August, 2022, airborne lidar survey of Mount St. Helens crater, upper North Fork Toutle River, and South Fork Toutle River The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava domes were extruded during the subsequent eruptive periods of 1980-1986 and 2004-2008. During 2022, U.S. Army Corps of Engineers contracted the acquisitions of airborne lidar surveys of Mount St. Helens crater and two primary drainages–upper North Fork Toutle River and South Fork Toutle River with GeoTerra, Inc. The U.S. Geological Survey generated a terrain dataset from the classified point cloud with supplied breaklines and modified lake hydro-flattening, then exported a single digital elevation model (DEM) of the ground surface (that is, 'bare earth'),... Tags: Climatology, Ecology, Forestry, Geography, Geomorphology, All tags... Geophysics, Glaciology, Hydrology, Land Use Change, Remote Sensing, Sedimentology, Soil Sciences, USGS Science Data Catalog (SDC), Volcanology, Water Quality, Wildlife Biology, Fewer tags Compiled onshore and offshore paleoseismic data along the Cascadia Subduction zone The USGS Powell Center Cascadia earthquake hazards working group compiled published onshore and offshore paleoseismic data along the Cascadia subduction zone, spanning sites from Vancouver Island to the Mendocino triple junction. Evidence for megathrust rupture includes coastal land-level change, tsunami inundation, onshore shaking proxies such as landslides or liquefaction, and offshore shaking proxies such as marine turbidites. The quality of paleoseismic data for megathrust rupture along the Cascadia subduction zone collected over the past three decades varies because analytical capabilities and data collection methodologies have evolved. Thus, as part of the compilation, we also present a ranking scheme to assess... Categories: Data; Tags: Aquatic Biology, British Columbia, California State, Cascadia subduction zone, Ecology, All tags... Geomorphology, Marine Geology, Oregon State, Sedimentology, Seismology, Stratigraphy, USGS Science Data Catalog (SDC), Washington State, earthquake, economy, lacustrine turbidite, landslide, liquefaction, marine turbidite, paleoseismic, subsidence, tsunami, Fewer tags Grain-size data from core S3-15G, Monterey Fan, Central California This data release supersedes version 1.0, published in October 2021 at https://doi.org/10.5066/F74F1NW7. Versioning details are documented in the accompanying VersionHistory_P9DZ321R.txt file. This data release presents sediment grain-size data from samples collected from core S3-15G, a 4.72-m long gravity core collected at a depth of 3,491 meters on the western levy of the Monterey Fan on May 31, 1978 (USGS Field Activity S-3-78-SC). Categories: Data; Tags: Assessments, CMHRP, Coastal and Marine Hazards and Resources Program, Loran-C navigation, Monterey Bay, All tags... Monterey Fan, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Sedimentology, State of California, Substrate, U.S. Geological Survey, USGS, core analysis, drilling and coring, environment, grain-size analysis, laboratory methods, marine geology, oceans, sea-floor characteristics, sediment analysis, sedimentology, Fewer tags Digital elevation model of Kīlauea Volcano, Hawaiʻi, based on July 2019 airborne lidar surveys The 2018 eruption of Kīlauea Volcano on the Island of Hawaiʻi saw the collapse of a new, nested caldera at the volcano’s summit, and the inundation of 35.5 square kilometers (13.7 square miles) of the lower Puna District with lava. Between May and August, while the summit caldera collapsed, a lava channel extended 11 kilometers (7 miles) from fissure 8 in Leilani Estates to Kapoho Bay, where it formed an approximately 3.5-square-kilometer (1.4-square-mile) lava delta along the coastline. Rapidly-deployed remote sensing techniques were vital in monitoring these events. Following the eruption, the U.S. Geological Survey (USGS) contracted the acquisition of rigorous airborne lidar surveys of Kīlauea Volcano's summit,... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ALS, DEM, East Rift Zone, Geography, Geomorphology, All tags... Geophysics, HI, Hawaiʻi, Hydrology, Kapoho Bay, Kīlauea Volcano, Land Use Change, Leilani Estates, Marine Geology, Puna District, Puʻu ʻŌʻō, Remote Sensing, Sedimentology, Seismology, Soil Sciences, Stratigraphy, Structural Geology, USA, USGS Science Data Catalog (SDC), Volcanology, airborne laser scanning, bare earth, digital elevation model, elevation, elevation, geomorphology, geoscientificInformation, hillshade, lidar, light detection and ranging, near infrared, shaded relief, topography, volcanic, volcano, Fewer tags 1 2 3 »