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Unpiloted aerial system (UAS) flight campaigns were conducted at two rangeland sites in Southwestern Montana during the 2018 growing season to classify vegetation and landcover types. A total of nine flights were conducted at the Argenta site and seven at the Virginia City site. To align images in space and time, we used four-dimensional structure from motion (4D SfM) and continued with processing for each flight date based on the full suite of images aligned for the entire growing season. We created dense point clouds, digital terrain models (bare earth), digital elevation models (including vegetation), and orthorectified images for each flight date at each site. We used the orthoimages to calculate the Normalized...
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Remotely sensed elk locations were derived from satellite and Unmanned Aerial Systems (UAS) imagery collected during the winter of 2018 and the winter and spring of 2019 at the National Elk Refuge in Jackson, Wyoming and compared to locations from Global Positioning System (GPS) collars from 2017 - 2019. This data release provides the source, date, time, latitude, and longitude of elk locations and the type of analyses the location data were used for in the accompanying manuscript by Graves and others 2021. DOI will be provided once supplied by the journal.
Unmanned Aerial System (UAS) flights were conducted over four stream catchments in Rio Blanco County, Colorado, during the summer of 2016. Two sties had active oil and gas operations within the basin whereas the other two sites did not. Structure from motion (SfM) was used to align raw images and create a dense point cloud, georectified orthoimage, and Digital Elevation Model (DEM) for each basin. A Digital Terrain Model (DTM), or bare earth model, for each basin was created by reclassifying the dense point cloud as either bare ground or other (vegetation, oil and gas infrastructure, etc.) and interpolating the land surface between bare ground points. Ideally, the DTM would always be equal or lower than the DEM;...
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Yellow sweet clover (Melilotus officinalis; clover hereafter) is a biennial legume native to Eurasia that is now present in all 50 states. Clover can grow 2 m tall and achieve high densities across large areas in the Northern Great Plains when conditions are conducive, such as in 2019. Clover is highly efficient at fixing nitrogen in soils which reduces the abundance of native grasses, while simultaneously facilitating invasion of non-native grasses, which may alter fire regimes. In contrast, clover provides considerable forage for ungulates, attracts a wide variety of insects that, along with clover seeds, are important to waterfowl, gamebirds, and songbirds, and supports numerous pollinators. Little is known about...
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The data set contains temporal chloride concentrations (mg/L) and specific conductance (uS/cm) values for 32 wetlands and groundwater monitoring wells as well as the date(s) sampled and the laboratory where the water quality analyses were conducted. The ratio of chloride concentration to specific conductance is referred to as the Contamination Index. In this region, values greater than 0.035 are used to identify water quality samples that are contaminated with co-produced water from energy development.
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Ken Pierce was a Research Geologist with the U.S. Geological Survey for over 55 years and authored numerous scientific papers, geologic maps, and field trip guides. This data release contains digital scans of 64 field notebooks 713 annotated aerial photographs, and 640 annotated geologic and topographic maps authored or annotated by Ken Pierce or his collaborators. Information contained in these notebooks, aerial photographs, and maps provide much of the underpinning of Ken Pierce's research, which focused largely on the glacial and geomorphological history of Yellowstone National Park and surrounding areas.


map background search result map search result map Water quality data from the Goose Lake Study Site Eastern Montana 1989-2018 Orthoimagery, digital elevation, digital terrain, final surface, and vegetation classification models for four stream catchments in western Colorado 2016 Orthoimagery for basin A1 Final surface model (SRF) for basin A1 Vegetation classification model (Veg) for basin A1 Orthoimagery for basin A2 Digital elevation model (DEM) for basin A2 Final surface model (SRF) for basin A2 Orthoimagery for basin B1 Digital terrain model (DTM) for basin B1 Final surface model (SRF) for basin B1 Orthoimagery for basin B2 Digital elevation model (DEM) for basin B2 Final surface model (SRF) for basin B2 Digital terrain model (DTM) for basin B2 Vegetation classification model (Veg) for basin B2 Remotely sensed elk locations on the National Elk Refuge, Wyoming, 2017-2019 Fractional cover estimates of sweet clover derived from UAV, aerial, and Sentinel-2 imagery for central Montana and northwest South Dakota, 2019 UAV based vegetation classification results and input NDVI, vegetation height, and texture datasets for two Montana rangeland sites in 2018 Ken Pierce's Legacy Field Notebooks and Annotated Aerial Photographs, Geological, and Topographical Maps from Across the Western United States 1963-2021 (ver. 2.0, January 2024) Final surface model (SRF) for basin A1 Orthoimagery for basin A1 Vegetation classification model (Veg) for basin A1 Orthoimagery for basin B2 Final surface model (SRF) for basin B2 Vegetation classification model (Veg) for basin B2 Digital elevation model (DEM) for basin B2 Digital terrain model (DTM) for basin B2 Orthoimagery for basin A2 Digital elevation model (DEM) for basin A2 Final surface model (SRF) for basin A2 Orthoimagery for basin B1 Digital terrain model (DTM) for basin B1 Final surface model (SRF) for basin B1 Remotely sensed elk locations on the National Elk Refuge, Wyoming, 2017-2019 Water quality data from the Goose Lake Study Site Eastern Montana 1989-2018 Fractional cover estimates of sweet clover derived from UAV, aerial, and Sentinel-2 imagery for central Montana and northwest South Dakota, 2019 Ken Pierce's Legacy Field Notebooks and Annotated Aerial Photographs, Geological, and Topographical Maps from Across the Western United States 1963-2021 (ver. 2.0, January 2024)