Filters: Tags: Rock Outcrop (X) > Categories: Data (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Raster (7) Shapefile (1) Types Downloadable (8) Map Service (8) GeoTIFF (7) Raster (7) OGC WFS Layer (1) OGC WMS Layer (1) Shapefile (1) Contacts Jenny L Hanson U.S. Geological Survey U.S. Geological Survey - ScienceBase Erin E Hoy Jayme M Strange More... Tag Types Theme (8) Place (8) USGS Scientific Topic Keyword (1) Harvest Set (1) Tag Schemes USGS Thesaurus (7) Common geographic areas (8) Coastal and Marine Ecological Classification Standard (8) Alexandria Digital Library Feature Type Thesaurus (7) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Bathymetry of select Rock Outcrops of the St. Croix River, May 2021 This dataset is a digital elevation model (DEM) of the bathymetry for six sites where known rock structures exist in the St. Croix River. The DEMs have a 10-cm resolution (Boom site is 0.5-m) to provide ultra-high-resolution elevations for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. Bathymetry is essential for providing the depths and shapes of underwater terrain and it represents the three-dimensional features (or relief) of underwater terrain. Multibeam sonar data were collected using a Norbit integrated... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, St. Croix River, USGS-EMA-LOW-SB SMC: Freshwater mussels, All tags... Wisconsin, acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags Depth average velocity of select Rock Outcrops of the St. Croix River, May 2021 This dataset is a digital surface of depth-averaged flow velocities for six sites where known rock structures exist in the St. Croix River. Acoustic Doppler Current Profilers (ADCP) are used to measure how fast water is moving across an entire water column. The ADCP measures water currents with sound, and the resulting flow information will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. River current velocities were collected using a SonTek RiverSurveyor© M9 for all six sites. All hydroacoustic... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, St. Croix River, USGS-EMA-LOW-SB SMC: Freshwater mussels, All tags... Wisconsin, acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags 700kHz Multibeam Bathymetry Hillshade of select Rock Outcrops of the St. Croix River, May 2021 These data are digital hillshades of the bathymetry for five (of six) sites where known rock structures exist in the St. Croix River. Hillshades are shaded relief surfaces created by the illumination source angle and shadows, and are being used to investigate the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. Hillshades are essential for visualizing details of underwater terrain and it represents a shaded relief surface of the topography. Multibeam sonar data were collected using a Norbit integrated wide band multibeam system... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, St. Croix River, USGS-EMA-LOW-SB SMC: Freshwater mussels, All tags... Wisconsin, acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags 700kHz Bathymetric Slope of select Rock Outcrops of the St. Croix River, May 2021 This dataset is a digital surface model of the slope for six sites where known rock structures exist in the St. Croix River. Slope is the gradient, or rate of maximum change in elevation, and is derived from the DEM. Slope measures will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. Slope is a driver of energy below the water and influences biotic diversity, distribution, and the functional traits of those biota. Slope is expressed in degrees; it calculates the maximum rate of change in value from... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, St. Croix River, USGS-EMA-LOW-SB SMC: Freshwater mussels, All tags... Wisconsin, acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags Sidescan Image Mosaics of select Rock Outcrops of the St. Croix River, May 2021 This dataset is a digital image mosaic of sidescan for six sites where known rock structures exist in the St. Croix River. Sidescan sonar emits conical or fan-shaped beam down across a wide angle perpendicular to the path of the sensor through the water. The intensity of the acoustic reflections from the riverbed is recorded in a series of cross-track slices and when stitched together in a mosaic, form an image of the riverbed giving the user a view of the material and texture of the riverbed. Sidescan mosaics are being used in this project mainly as ancillary information to help view the rock structures and will also be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, St. Croix River, USGS-EMA-LOW-SB SMC: Freshwater mussels, All tags... Wisconsin, acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags Stillwater Complex Rock Outcrop Database This dataset includes polygons that describe areas of rock outcrop in the area of the Stillwater Complex, Montana. The Stillwater Complex is an Archean, ultramafic to mafic layered intrusion exposed in the Beartooth Mountains in south-central Montana. This igneous intrusion contains magmatic mineralization that is variably enriched in strategic and critical commodities such as chromium, nickel, and the platinum-group elements (PGE). Polygons representing rock outcrops were digitized in a Geographic Information System (GIS) using georeferenced maps and orthophoto imagery from published reports and field mapping sheets. This is a compilation of both legacy data and outcrops from recent field mapping. This dataset... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Mineral Resources, Montana, Rock Outcrop, Stillwater, Stratigraphy, All tags... USGS Science Data Catalog (SDC), geoscientificInformation, Fewer tags 700kHz Bathymetric Roughness of select Rock Outcrops of the St. Croix River, May 2021 This dataset is a digital surface model of the roughness for five (of six) sites where known rock structures exist in the St. Croix River. Roughness is the degree of irregularity of the surface and is computed from elevation. Roughness measures will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. The determination of the roughness plays a role in the analysis of terrain elevation data; it’s useful for calculations of the river morphology and physical geography in general. Multibeam sonar data were... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, St. Croix River, USGS-EMA-LOW-SB SMC: Freshwater mussels, All tags... Wisconsin, acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags 700kHz Multibeam Backscatter Mosaics of select Rock Outcrops of the St. Croix River, May 2021 This dataset is a digital image mosaic of the backscatter for five (of six) sites where known rock structures exist in the St. Croix River. Backscatter is the strength of the returned signal, or reflectivity, of the riverbed and provides information about bed composition. This data can be used to investigate properties of the riverbed, such as hardness, sediment characteristics and even sediment grain size. Backscatter information will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. MBES bathymetry... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Minnesota, Rock Outcrop, Rock Substrate, USGS-EMA-LOW-SB SMC: Freshwater mussels, Wisconsin, All tags... acoustic doppler current profiling, bathymetry measurement, benthic ecosystems, endangered species, image mosaics, rivers, sea-floor acoustic reflectivity, sidescan sonar, Fewer tags