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Electrical resistivity tomography (ERT) and horizontal-to-vertical spectral ratio (HVSR) data collected East and Southeast of Ellsworth Air Force Base, South Dakota, in 2021 This data release contains electrical resistivity tomography (ERT) and passive seismic data collected east of Ellsworth Air Force Base, South Dakota, from April to September 2021. The data accompanies a USGS scientific investigations map from Medler (2022). The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, used surface geophysical methods to delineate the top of the Cretaceous Pierre Shale along survey transects in selected areas east of Ellsworth Air Force Base, South Dakota. In 2021, the U.S. Geological Survey performed passive seismic and 2D electrical resistivity tomography (ERT) surveys along 21 co-located survey transects east of Ellsworth Air Force Base. Passive seismic... Categories: Data; Tags: Ellsworth Air Force Base, Hydrology, Meade County, Pennington County, South Dakota, All tags... South Dakota, USGS Science Data Catalog (SDC), environment, geophysics, geoscientificInformation, horizontal-to-vertical spectral ratio, passive seismic, Fewer tags Meade KS Second Order Resource Selection Function Probability of suitable habitat for Black Tailed Prairie Dogs for each cell of raster. Probability is measured from 0 to 1 with 0 being low habitat suitability and 1 being high suitability. Probability data is created from fitting a global second-order model to county level raster data. For details on model fitting and data used to produce probability raster see report. https://www.fws.gov/science/catalog Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Black Tailed Prairie Dogs, Great Plains, Habitat Suitability, Kansas, Meade County, All tags... Rangeland and Resources Research Unit, Resource Selection Function, Second Order Habitat Selection, USDA, Fewer tags Meade KS Third Order Categorized Resource Selection Function Classified probability of suitable habitat for Black Tailed Prairie Dogs for each cell of raster. Classification is based on 4 probability cutoff levels with category 1 being low habitat suitability and category 4 being high habitat suitability. Categorized probability data is created from fitting a global third-order model to county level raster data. For details on model fitting and data used to produce categorized probability raster see report. https://www.fws.gov/science/catalog Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Black Tailed Prairie Dogs, Great Plains, Habitat Suitability, Kansas, Meade County, All tags... Rangeland and Resources Research Unit, Resource Selection Function, Third Order Habitat Selection, USDA, Fewer tags Three-Dimensional Delineation of the Pierre Shale Bedrock from Electrical Resistivity Surveys Conducted in Two Areas of Interest Within and Near Ellsworth Air Force Base, South Dakota, 2022 In 2022, the USGS, in cooperation with the U.S. Air Force Civil Engineer Center (USAF/CEC), performed geophysical surveys at two areas of interest within and near Ellsworth Air Force Base (EAFB) to delineate the Cretaceous Pierre Shale bedrock. Electrical resistivity tomography (ERT) data were collected in two grid patterns using the dipole-dipole array within and near EAFB and site information—including latitude, longitude, and elevation—were surveyed along geophysical transects comprising the grids using real-time kinematic (RTK) techniques. The purpose of collecting ERT data in grids rather than along individual transects was to create three-dimensional (3D) surfaces of the bedrock, which improve site characterization... Categories: Data; Tags: Ellsworth Air Force Base, Meade County, Pennington County, South Dakota, South Dakota, All tags... USGS Science Data Catalog (SDC), electrical resistivity tomography, environment, geophysics, geoscientificInformation, Fewer tags Datasets Used to Create Maps of Pierre Shale Elevation and Surficial Deposit Thickness within and near Ellsworth Air Force Base, South Dakota, 2021 This data release contains borehole geophysical data collected within and near Ellsworth Air Force Base, South Dakota, from September 2020 to August 2021. The data accompanies a USGS scientific investigations map from Medler and others (2022). The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, collected borehole geophysical data and performed simple aquifer tests to estimate the thickness and hydraulic properties of surficial deposits. The purpose of data collection was to create generalized contour maps of Pierre Shale elevation and surficial deposit thickness within and near Ellsworth Air Force Base (study area). Natural gamma and electromagnetic induction (EMI) data were... Categories: Data; Tags: Ellsworth Air Force Base, Geophysics, Hydrology, Meade County, Pennington County, All tags... South Dakota, South Dakota, USGS Science Data Catalog (SDC), borehole geophysics, colloidal borescope flowmeter, electromagnetic induction, environment, geophysics, geoscientificInformation, natural gamma, nuclear magnetic resonance, Fewer tags Meade KS Second Order Categorized Resource Selection Function Classified probability of suitable habitat for Black Tailed Prairie Dogs for each cell of raster. Classification is based on 4 probability cutoff levels with category 1 being low habitat suitability and category 4 being high habitat suitability. Categorized probability data is created from fitting a global second-order model to county level raster data. For details on model fitting and data used to produce categorized probability raster see report. https://www.fws.gov/science/catalog Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Black Tailed Prairie Dogs, Great Plains, Habitat Suitability, Kansas, Meade County, All tags... Rangeland and Resources Research Unit, Resource Selection Function, Second Order Habitat Selection, USDA, Fewer tags Electrical Resistivity Tomography (ERT) and Horizontal-to-Vertical Spectral Ratio (HVSR) Data Collected Within and Near Ellsworth Air Force Base, South Dakota, from 2014 to 2019 This data release contains geophysical data from electrical resistivity tomography (ERT) and passive seismic surveys within and near Ellsworth Air Force Base, South Dakota, collected June 2014–September 2019. The data accompanies a USGS scientific invesgations map from Medler and Anderson (2021; https://doi.org/10.3133/sir20215035) and a USGS scientific investigations report by Bender and others (2021; https://doi.org/10.3133/sir20215060). The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineering Center, investigated the use of surface geophysical methods to delineate the top of the Cretaceous Pierre Shale along survey transects in selected areas within and near Ellsworth Air Force Base,... Categories: Data; Tags: Ellsworth Air Force Base, Geophysics, Hydrology, Meade County, Pennington County, All tags... South Dakota, USGS Science Data Catalog (SDC), elevation, environment, geophysics, groundwater, horizontal-to-vertical spectral ratio, passive seismic, Fewer tags Meade KS Third Order Resource Selection Function Probability of suitable habitat for Black Tailed Prairie Dogs for each cell of raster. Probability is measured from 0 to 1 with 0 being low habitat suitability and 1 being high suitability. Probability data is created from fitting a global third-order model to county level raster data. For details on model fitting and data used to produce probability raster see report. https://www.fws.gov/science/catalog Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Black Tailed Prairie Dogs, Great Plains, Habitat Suitability, Kansas, Meade County, All tags... Rangeland and Resources Research Unit, Resource Selection Function, Third Order Habitat Selection, USDA, Fewer tags