Filters: Tags: electromagnetics (X) > Extensions: ArcGIS Service Definition (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types ArcGIS REST Map Service (2) ArcGIS Service Definition (2) Downloadable (2) Map Service (2) OGC WFS Layer (1) OGC WMS Layer (1) Shapefile (1) Contacts Stephanie R James Bennett E Hoogenboom Geology, Geophysics, and Geochemistry Science Center U.S. Geological Survey U.S. Geological Survey - ScienceBase More... Categories Data (2) Tag Types Place (2) Theme (2) Harvest Set (2) Tag Schemes None (2) USGS Thesaurus (2) Geographic Names Information System (GNIS) (1) Common Geographic Areas (1) ISO 19115 Topic Category (2) View Results as: JSON ATOM CSV

Ground conductivity measurements at selected National Wildlife Refuges, Montana and North Dakota, 2017-2018 Shallow subsurface electrical conductivity was mapped at selected U.S. Fish and Wildlife Service managed lands in northeast Montana and northwest North Dakota using the DUALEM421 electromagnetic sensor (Dualem, Inc., ON, Canada) in the winters of 2017 and 2018. Data were acquired by towing the DUALEM421 sensor on a sled behind an all-terrain vehicle or snow machine, with the sensor at a nominal height of 0.3 meters (m) above ground surface. Approximately 427 line-kilometers (km) of data were acquired over an area of nearly 26 square-kilometers. Data were manually edited to remove sensor dropouts, lag corrected for apparent offsets between recorded GPS location and data locations for each coil pair, and averaged... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Anderson, Beaver Lake, Bigslough, Divide County, ND, Dog Leg, All tags... GGGSC, Geology, Geophysics, and Geochemistry Science Center, Gjesdal East, Goose Lake, Hansen, Jerde, Larson Slough, Lindell, Medicine Lake, Medwell, Montana, NOROCK, National Wildlife Refuge, Norman Lake, North Dakota, North Root, Northeast, Northern Rocky Mountain Science Center, Prairie Pothole Region, Rabenberg, STEPPE, Science Team about Energy and Plains and Potholes Environments, Sheridan County, MT, Stateline, USGS Science Data Catalog (SDC), Ward, Westby, MT, Westgard, Wigeon, Williston Basin, electromagnetic surveying, electromagnetics, environment, geophysics, geoscientificInformation, groundwater, https://www.sciencebase.gov/catalog/item/5e739c2de4b01d50926c0a08, hydrogeology, resistivity, salinity, water resources, Fewer tags Combined results and derivative products of hydrogeologic structure and properties from airborne electromagnetic surveys in the Mississippi Alluvial Plain Electrical resistivity results from two regional airborne electromagnetic (AEM) surveys (Minsley et al. 2021 and Burton et al. 2021) over the Mississippi Alluvial Plain (MAP) were combined by the U.S. Geological Survey to produce three-dimensional (3D) gridded models and derivative hydrogeologic products. Grids were discretized in the horizontal dimension to align with the 1 kilometer (km) x 1 km National Hydrogeologic Grid (NHG; Clark et al. 2018), and vertically discretized into both 5 meter (m) depth slices and 5 m elevation slices. To support hydrogeologic and geologic studies within the MAP region and the Mississippi River Valley Alluvial aquifer (MRVA), derivative products were calculated from the 3D resistivity... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: 3D, Arkansas, Arkansas River, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags... Illinois, Louisiana, MRVA, Mississippi, Mississippi Alluvial Plain, Mississippi River, Mississippi River Valley Alluvial aquifer, Missouri, Tennessee, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), WAUSP, Water Availability and Use Science Program, electromagnetic surveying, electromagnetics, engineering sciences, environment, geophysics, geoscientificInformation, geospatial datasets, groundwater, hydrogeology, hydrogeology, resistivity, three-dimensional, water resources, Fewer tags