cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5066/f7zk5dts
title: Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, February 2016

description: Two dams on the Elwha River, Washington State, USA trapped over 20 million cubic meters 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 and texture following the dam removals. For more information on the USGS role in the Elwha River Restoration, please visit http://walrus.wr.usgs.gov/elwha/. This USGS data release presents data collected during surveys of nearshore bathymetry, beach topography, and surface sediment grain size from the Elwha River delta, Washington. Survey operations were conducted between February 15 and February 19, 2016 (USGS Field Activity Number 2016-608-FA) by a team of scientists from the U.S. Geological Survey Pacific Coastal and Marine Science Center (PCMSC), Washington State Department of Ecology (WA DOE), Washington Sea Grant, and National Park Service. Nearshore bathymetry data were collected using two personal watercraft (PWCs) and a kayak, each equipped with single-beam echosounders and survey-grade global navigation satellite systems (GNSS). Topography data were collected on foot with GNSS mounted on backpacks. Positions of the survey platforms were referenced to a GNSS base station placed on a nearby benchmark with known horizontal and vertical coordinates. Depths from the echosounders were computed using sound velocity profiles measured with a conductivity-temperature-depth (CTD) sensor during the survey. A total of 126 km of nearshore bathymetric survey lines and 161 km of topographic survey lines were collected during the 4 days of survey operations. Swift currents resulting from high river discharge (about 4,000 cfs) during the survey limited access to portions of the river mouth that have normally been sampled by topographic surveyors on foot. Despite the challenge of high river flow, good coverage of the beach and nearshore region was achieved using the combination of methods described above. Bed sediment was sampled using a small ponar, or 'grab', sampler on February 16, 2016 from the R/V Frontier at a total of 83 locations in water depths between about 1 and 17 m around the delta. An additional 18 samples were collected by hand at low tide. A handheld GNSS receiver was used to determine the locations of sediment samples. Digital files containing the nearshore bathymetry data, beach topography data, derived DEMs, and grain-size data from this survey are available for download from the child item pages.
DOI: 10.5066/f7zw1hzd
title: West Coast Littoral Cells -- Shoreline Based on Washington, Oregon, and California Data Collected from 2002 to 2015

description: These data depict littoral cells along the West Coast of the United States, as segments of the shoreline of Washington, Oregon, and California. A littoral cell is a reach of the coast that is isolated sedimentologically from adjacent coastal reaches and that features its own sources and sinks. Isolation is typically caused by protruding headlands, submarine canyons, inlets and some river mouths that prevent littoral sediment from one cell to pass into the next (Beachapedia). The data are a compilation of existing data sources from Washington Department of Ecology (WDOE), Oregon Coastal Management Program (OCMP), and California Coastal Sediment Management Workgroup (CSMW). There is companion data set with the same attributes, but a different geographic presentation: &quot;West Coast Littoral Cells -- Polygon Based on Washington, Oregon, and California Data Collected from 2002 to 2015&quot;.
DOI: 10.5066/p90eq1h7
title: Historical shorelines and morphological metrics for barrier islands and spits along the north coast of Alaska between Cape Beaufort and the U.S.-Canadian border, 1947 to 2019

description: A suite of morphological metrics were derived from existing shoreline and elevation datasets for barrier islands and spits located along the north-slope coast of Alaska between Cape Beaufort and the U.S.-Canadian border. This dataset includes barrier shorelines and polygons attributed with morphological metrics from five time periods: 1950s, 1980s, 2000s, 2010s, and 2020s.
DOI: 10.5066/p90eudmf
title: Geochemistry of fine-grained sediment in Bellingham Bay, Nooksack River, and small creeks from June 2017 to September 2019

description: 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 13/12 (d13C) and nitrogen 15/14 (d15N) isotopes and total carbon to total nitrogen (C:N); and short-lived cosmogenic radionuclide activities (Beryllium-7, Cesium-137, and excess Lead-210).
DOI: 10.5066/p914lmk2
title: Model parameter input files to compare effects of stream discharge scenarios on sediment deposition and concentrations around coral reefs off west Maui, Hawaii

description: 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 (&lsquo;SC2&rsquo;) wave conditions for current stream discharge (&lsquo;Alt1&rsquo;) and stream discharge with watershed restoration (&lsquo;Alt3&rsquo;). 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 the corresponding Delft3D models. These input files accompany the modeling conducted for the following publication: Storlazzi, C.D., Cheriton, O.M., Cronin, K.M., van der Heijden, L.H., Winter, G., Rosenberger, K.J., Logan, J.B., and McCall, R.T., 2023, Observations of coastal circulation, waves, and sediment transport along West Maui, Hawai?i (November 2017&ndash;March 2018), and modeling effects of potential watershed restoration on decreasing sediment loads to adjacent coral reefs: U.S. Geological Survey Open-File Report 2022&ndash;1121, 73 p., https://doi.org/10.3133/ofr20221121.
DOI: 10.5066/p91qsgxf
title: California shorelines and shoreline change data, 1998-2016

description: This data release contains mean high water (MHW) shorelines along the coast of California for the years 1998/2002, 2015, and 2016, extracted from Light Detection and Ranging (LiDAR) digital elevation models using ArcGIS. The Digital Shoreline Analysis System (DSAS) was used to calculate net shoreline movement (NSM) between the pre-El Nino (2015) and post-El Nino (2016) shorelines, as a proxy for sandy shoreline change throughout the El Nino winter season. For a longer-term perspective of background shoreline behavior, end-point rates (EPR) of change were also calculated between the 1998/2002 and the 2016 shorelines.
DOI: 10.5066/p9238f8k
title: Nearshore bathymetry data from the Unalakleet River mouth, Alaska, 2019

description: This data release presents nearshore bathymetry data collected at the mouth of the Unalakleet River in Alaska, near the city of Unalakleet. The data were collected in August 2019 by the U.S. Geological Survey, Pacific Coastal and Marine Science Center. Nearshore bathymetry was measured along survey lines from the shore to a depth of approximately -7.4 m NAVD88 and in a portion of the estuary closest to the mouth. Bathymetry data were collected using small boat equipped with a single-beam sonar system and global navigation satellite system (GNSS) receiver. The sonar system consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9 degree beam. Depths from the seafloor to the echosounder were calculated using the digitized acoustic backscatter and sound velocity profiles, measured in multiple locations using a YSI CastAway CTD. The position of the boat and echosounder was recorded at 10 Hz using a Trimble R7 receiver and Zephyr 2 antenna. Survey-grade vertical and horizontal positions were achieved by applying differential corrections from a nearby GNSS base station installed for the purposes of this survey.
DOI: 10.5066/p929sxze
title: Structure-from-Motion (SfM) surface models derived from seafloor video from the Channel Islands, California

description: Structure-from-Motion (SfM) surface models were created using seafloor video collected over a visible fault scarp in the Channel Islands, California, during a 2016 U.S. Geological Survey (USGS) field activity. Four SfM surface models were created, each with a different combination of locating, scaling, and optimizing methods. Video imagery was collected using the USGS Pacific Coastal and Marine Science Center's BOBSled, equipped with high-definition (720p) video cameras (video published in Coastal and Marine Geology Program video and photo portal, Golden and others, 2015). The sled was towed behind the R/V Shearwater and shipboard GPS locations were recorded every 1 second in the video's audio channel. The models were geolocated and scaled using either shipboard GPS or georeferencing the imagery to existing sonar bathymetry at a lower resolution (Cochrane and others, 2018). The models were optimized using either a fixed lens model or automatic calibration in the SfM software, and the files presented here are named to reflect their processing method: &quot;AutoCal&quot; refers to automatic calibration by the SfM software; &quot;Cal&quot; refers to image calibration using a fixed lens model; &quot;Georef&quot; refers to locations derived from georeferencing the video imagery to the existing sonar data; and &quot;ShipGPS&quot; refers to locations derived from the shipboard GPS embedded in the video. Each file was created using one of each of the calibration and location methods, indicated in the filename as &quot;SfM_CalibrationMethod_LocationMethod_UTM10N.&quot; References: Cochrane, G.R., Finlayson, D.P., and Dailey, E.T., 2018, Bathymetry and acoustic backscatter data from the San Miguel Passage in the Channel Islands, California, 2007: U.S. Geological Survey data release, https://doi.org/10.5066/F78G8HVC. Golden, N.E., Ackerman, S.D., and Dailey, E.T., 2015, Coastal and Marine Geology Program video and photograph portal. U.S. Geological Survey data release, http://doi.org/10.5066/F7JH3J7N.
DOI: 10.5066/p92m2fzc
title: Chirp sub-bottom data of USGS field activity K0211PS collected in Puget Sound, Washington in April of 2011

description: High-resolution chirp sub-bottom data were collected by the U.S. Geological Survey in April 2011 south of Bainbridge Island and west of Seattle in Puget Sound, Washington. Data were collected aboard the R/V Karluk during field activity K0211PS using an Edgetech SB-512i sub-bottom profiler. Sub-bottom acoustic penetration spans several tens of meters and is variable by location.
DOI: 10.5066/p92r2i8j
title: Chirp, multichannel minisparker, and boomer seismic-reflection data from USGS field activity G-01-13-GA collected in Port Valdez, Alaska, in September 2013

description: Multichannel minisparker and boomer seismic-reflection and chirp sub bottom data were collected by the U.S. Geological Survey in September of 2013 in Port Valdez, Alaska. Data were collected aboard the USGS R/V Alaskan Gyre during field activity G-01-13-GA. Sub-bottom acoustic penetration spans several hundreds of meters and is variable by location. High-resolution multichannel seismic-reflection data were acquired to support the U.S. Geological Survey Alaska coastal and marine hazards project to explore the sedimentary structure of tsunamigenic landslide deposits around an IODP drill site in Port Valdez. These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.
DOI: 10.5066/p93m68cn
title: Multichannel minisparker seismic-reflection and chip sub bottom data collected in the Santa Barbara Channel in July of 2018

description: High-resolution multichannel minisparker seismic-reflection and chirp sub-bottom data were collected by the U.S. Geological Survey in July of 2018 between Point Conception and Coal Oil Point in the Santa Barbara Channel, California. Data were collected aboard the USGS R/V Parke Snavely during field activity 2018-645-FA. Data were acquired to support the USGS geologic hazards projects to aide hazard assessment of shallow faulting, slope stability, and submarine landslides along the western Santa Barbara Channel. These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.
DOI: 10.5066/p93z2lyj
title: Reprocessed multichannel seismic-reflection (MCS) data from USGS field activity T-1-96-SC collected in San Diego Bay, California in 1996

description: This data release presents reprocessed multichannel seismic-reflection (MCS) data that was originally collected in 1996 in partnership with the California Division of Mines and Geology and Caltrans as part of a seismic hazard assessment of the Coronado Bridge in San Diego Bay, California. The original survey collected 130 km of data with a 14-cubic inch sleeve-gun (airgun) source, a 24-channel streamer, and 3.125 m shot spacing. Reprocessed profiles show increased data resolution, with data recorded to 750 ms two-way-travel-time, and interpretable data down to about 400 m.
DOI: 10.5066/p94lh20j
title: Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Post Point, Bellingham Bay, WA, June 2019

description: An unmanned aerial system (UAS) was used to acquire high-resolution imagery of the intertidal zone at Post Point in Bellingham Bay, Washington on June 6, 2019. This imagery was processed using structure-from-motion (SfM) photogrammetric techniques to derive high-resolution digital surface models (DSM), orthomosaic imagery, and topographic point clouds. In order to maximize the extent of the subaerially exposed area, the survey was timed to coincide with a spring low tide occurring at approximately 20:59 Universal Coordinated Time (UTC) (13:59 Pacific Daylight Time (PDT)), with a predicted water level of -0.61 meters relative to the NAVD88 vertical datum at the Bellingham NOAA tide station (station ID 9449211). A total of five flights were conducted for the survey between 19:24 and 21:01 UTC (12:24 and 14:01 PDT). Flights F01, F02, and F03 were conducted at an approximate altitude of 70 meters above ground level (AGL), resulting in a nominal ground-sample-distance (GSD) of 1.8 centimeters per pixel. Flights F04 and F05 were conducted at an approximate altitude of 35 meters AGL, resulting in a nominal ground-sample-distance (GSD) of 0.9 centimeters per pixel. Flight F04 was aborted early. The imagery from this flight was not used and is not included in this data release. The flights were conducted using a Department of Interior-owned 3DR Solo quadcopter fitted with a Ricoh GR II digital camera featuring a global shutter. The UAS was flown on pre-programmed autonomous flight lines which were oriented roughly shore-parallel and were spaced to provide approximately 70 percent overlap between images from adjacent lines. The camera was triggered at 1 Hz using a built-in intervalometer. Before each flight, the camera's digital ISO, aperture, and shutter speed were adjusted for ambient light conditions. Nineteen temporary ground control points (GCPs) were distributed throughout the area to establish survey control. The GCPs consisted of a combination of small square tarps with black-and-white cross patterns and "X" marks placed on the ground using temporary chalk. The GCP positions were measured using post-processed kinematic (PPK) GPS, using corrections from a GPS base station ("BELI") located approximately 5 kilometers from the study area operated by the Washington State Reference Network (WSRN). This data release presents five data products derived from these surveys which are available for download: 1) orthomosaic images with a resolutions of 1 and 2 centimeters per pixel, 2) digital surface models (DSM) and hillshade images with resolutions of 2 and 4 centimeters per pixel, 3) topographic point clouds in LAZ format 4) the geographic positions of the ground control points, and 5) the raw aerial imagery in JPG format.
DOI: 10.5066/p958q0dx
title: Chirp sub-bottom data collected in 2019 in Whiskeytown Lake, California during USGS field activity 2018-686-FA

description: High-resolution chirp sub-bottom data were collected by the U.S. Geological Survey, Pacific Coastal and Marine Science Center in May of 2019 in Whiskeytown Lake, California using an Edgetech SB-512i sub-bottom profiler. These data were collected to measure possible debris flows into the lake during the 2018-2019 rainy season following the July-August 2018 Carr fire that burned vegetation around the entire lake. Post-fire hillslope sediment yields are commonly substantially greater than pre-fire yields, but the degree to which they increase can vary substantially. Effects of wildfire on sediment yield have important implications for hazards (debris-flow risk), ecosystem disturbance and recovery, and downstream water resources (storage capacity in lakes, as well as water quality). These data were collected in association with bathymetric and topographic data collected in and around Whiskeytown Lake, available at, https://doi.org/10.5066/P9HEDYNT.
DOI: 10.6084/m9.figshare.22795865
title: CMI_bvFTD

description: EEG source space connectivity matrices of patients with behavioral variant frontotemporal dementia computed with conditional mutual information (CMI)
DOI: 10.6084/m9.figshare.22795865.v1
title: CMI_bvFTD

description: EEG source space connectivity matrices of patients with behavioral variant frontotemporal dementia computed with conditional mutual information (CMI)
DOI: 10.5066/p95cihsu
title: Major and trace element geochemistry and mineralogy of ferromanganese crusts from seamounts within the Tuvalu Exclusive Economic Zone

description: Ferromanganese crusts were collected via dredge from seamounts within the Tuvalu Exclusive Economic Zone in the Pacific Ocean during cruise RR1310 funded by the National Science Foundation aboard the R/V Roger Revelle in 2013. USGS scientists requested these ferromanganese crust samples from the Oregon State University Marine and Geology Repository where they had been archived. Ferromanganese crust samples were sent to USGS for subsampling and major and trace element geochemical and x-ray diffraction mineralogy analyses. Geochemical and mineralogy data, bulk and layer thickness information, as well as location information (latitude, longitude, depth) for each ferromanganese crust sample are provided here. These data serve to expand the knowledge and statistics for deep ocean marine mineral occurrences and composition within the global ocean.
DOI: 10.5066/p95yn9he
title: Rain measurements in Santa Cruz County, California, January 2023

description: Rain gages were deployed temporarily at four sites in Santa Cruz County, California, during a series of atmospheric-river storms that delivered unusually large amounts of rain in January 2023. Data collection focused on the San Lorenzo River, and include three locations in the San Lorenzo Valley (in Boulder Creek along Hilton Drive, in Felton near Glengarry Road, and in Scotts Valley along Green Valley Road), as well as one site within the city of Santa Cruz, on Darwin Street. These data are provided to facilitate emergency response and assessment of continued landscape effects of these storms.
DOI: 10.5066/p973fq3m
title: Topographic point clouds for the Mud Creek landslide, Big Sur, California from structure-from-motion photogrammetry from aerial photographs

description: This data release contains structure-from-motion (SfM) point cloud data from aerial surveys conducted over the Mud Creek landslide on Big Sur from 1967-2018. Data sources include scanned aerial photographs, digital images collected from fixed wing aircraft, and digital images collected from multirotor UAS.
DOI: 10.5066/p976wnnn
title: Pilot study on bathymetric change analyses in the Sacramento-San Joaquin Delta, California

description: The bathymetry of the Sacramento-San Joaquin Delta affects the flow of water and sediment throughout the system and is a basic control on levee stability, habitat distribution, and water quality. Delta bathymetry is dynamic, responding to both natural forces and human activities. Assessment of future Delta conditions is aided by understanding how its bathymetry has changed in the past. This pilot study explores historic bathymetric change in the Delta. The earliest comprehensive surveys that covered a large portion of the Delta were conducted in the 1930s by the U.S. Coast and Geodetic Survey, the precursor to the National Oceanic and Atmospheric Administration. These historic surveys are compared to recent surveys conducted by the California Department of Water Resources and others to document how sedimentation and erosion have changed the Delta. We selected regions for the pilot study based on availability of data, critical habitats, and importance to fellow researchers who are trying to predict future changes to the Delta. As the Delta is altered though both natural processes and human development, understanding how the bathymetry has changed will help improve predictive models of the system.
DOI: 10.5066/p97cz0t7
title: California State Waters Map Series Data Catalog--Point Sur to Point Arguello

description: As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Sur and Point Arguello was generated from seismic-reflection data collected between 2008 and 2014, and supplemented with geologic structure (fault and fold) information following the methodology of Wong (2012). Water depths determined from bathymetry data were added to the sediment thickness data to provide information on the depth to base of the post-LGM unit.
DOI: 10.5066/p980s50b
title: Chirp and minisparker seismic-reflection data of field activity F-02-07-NC collected offshore Ano Nuevo to San Francisco, San Mateo County California from 2007-03-22 to 2007-04-06

description: High-resolution single-channel Chirp and minisparker seismic-reflection data were collected by the U.S. Geological Survey in March and April 2007, offshore San Mateo County, California. Data were collected aboard the R/V Fulmar during field activity F-02-07-NC. Chirp data were collected using an EdgeTech 512 chirp subbottom system and were recorded with a Triton SB-Logger. Minisparker data were collected using a SIG 2-mille minisparker sound source combined with a single-channel streamer, and both were recorded with a Triton SB-Logger.