Filters: Tags: gravel deposits (X) > partyWithName: PCMSC Science Data Coordinator (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts U.S. Geological Survey, Pacific Coastal and Marine Science Center U.S. Geological Survey - ScienceBase Amy E East Joshua B Logan Mark C Mastin U.S. Geological Survey Categories Data (2) Tag Types Theme (2) Place (2) Tag Schemes None (2) USGS Thesaurus (2) Geographic Names Information Systems (2) Data Categories for Marine Planning (2) ISO 19115 Topic Categories (2) Marine Realms Information Bank (MRIB) Keywords (1) View Results as: JSON ATOM CSV

Sediment grain size from the Elwha River, Washington, 2006 to 2017 The grain size of sediment on the riverbed was measured during 20 surveys on the Elwha River, Washington, between 2006 and 2017. Most data were collected along the same transects where channel topography was measured (see related child item in this data release: https://www.sciencebase.gov/catalog/item/5a989288e4b06990606de04b). Measurements of sediment ranging from medium sand to boulders were made using the CobbleCam digital photographic technique (Warrick and others, 2009), which uses a calibrated autocorrelation algorithm (Rubin, 2004) to calculate the mean grain size of sediment from pixels in downward-looking digital photographs. This technique yields grain-size values accurate to within 14 percent of those... Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Geological Survey, USGS, field inventory and monitoring, grain-size analysis, gravel deposits, inlandWaters, river reaches, river systems, sediment transport, Fewer tags River-channel topography on the Elwha River, Washington, 2006 to 2017 This portion of the data release presents topographic data collected at 5 study sites along Elwha River, Washington between 2006 and 2017. Elevations along channel-perpendicular transects were surveyed using a total station and prism rod. Initial geodetic control was established using static global positioning system (GPS) occupations. A total station was subsequently used to expand and maintain the survey control network at each site. All survey data were referenced to the NAD83 datum, using the UTM, zone 10, coordinate reference system. All elevations were referenced to the NAVD88 vertical datum. Based on repeat measurements of points with known positions, we estimated the horizontal and vertical accuracy of the... Categories: Data; Tags: Bathymetry and Elevation, CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, All tags... Glines Canyon Dam (historical), PCMSC, Pacific Coastal and Marine Science Center, State of Washington, U.S. Geological Survey, USGS, field inventory and monitoring, gravel deposits, inlandWaters, river reaches, river systems, topographic mapping, topography, Fewer tags