Found 651 datasets matching "2021 image".
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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...
Search relevance: 82.57 | Views last month: 0 -
In May 2021, the Grand Canyon Monitoring and Research Center (GCMRC) of the U.S. Geological Survey’s (USGS), Southwest Biological Science Center (SBSC) acquired airborne multispectral high...
Search relevance: 82.03 | Views last month: 1 -
This dataset contains surface sediment grain size distributions derived from automated image processing of in situ seafloor images obtained with an underwater camera system at four sites (SKM,...
Search relevance: 76.31 | Views last month: 0 -
2021 Orthophoto - 3 inch resolution: This document describes the processes used to create the orthoimagery data produced for the District of Columbia from 2021 digital aerial photography. It was...
Search relevance: 73.71 | Views last month: 3 -
This dataset contains a thematic [classified] image derived from supervised classification of WorldView-3 satellite imagery. This data release contains a geospatial thematic (raster) image derived...
Search relevance: 72.71 | Views last month: 0 -
The dataset consists of a shapefile of measurements of surface velocity magnitude and direction at the Colorado River at Compact Point near Lees Ferry, AZ, on March 18, 2021. The dataset contains...
Search relevance: 70.13 | Views last month: 0 -
The dataset consists of a shapefile of measurements of surface velocity magnitude and direction at the Colorado River at Windy Gap near Granby, CO, on July 27, 2021. The dataset contains...
Search relevance: 66.98 | Views last month: 0 -
This data release contains geospatial vector (polygon) data created using data obtained during 2020–21 in support of Arundo donax (Arundo Cane) image classification along the Rio Grande in Webb...
Search relevance: 63.42 | Views last month: 0 -
This data release contains geospatial thematic (classified) images and vector (polygon) data derived from WorldView-3 satellite imagery. Imagey was obtained during 2020–21 along the Rio Grande in...
Search relevance: 45.45 | Views last month: 0 -
In August 2021, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, collected high-resolution geophysical data, sediment samples, and bottom imagery to determine...
Search relevance: 44.40 | Views last month: 0 -
In August 2021, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, collected high-resolution geophysical data, sediment samples, and bottom imagery to determine...
Search relevance: 43.68 | Views last month: 0 -
This dataset contains surface sediment grain size distributions derived from manual point counts of in situ seafloor images obtained with an underwater camera system in the lower Columbia River,...
Search relevance: 39.45 | Views last month: 0 -
A total of 94,567 underwater images were collected at Looe Key, Florida, in July 2021, using the SQUID5 Structure-from-Motion (SfM) system, a towed-surface vehicle with five downward-looking...
Search relevance: 37.52 | Views last month: 1 -
These data consist of down-looking images of Lake Michigan benthos, collected in 2020 and 2021 with an autonomous underwater vehicle (AUV). Information about each image (i.e., latitude, longitude,...
Search relevance: 37.49 | Views last month: 1 -
The text file "SQUID5_LKR_2021_Image_Locations.txt" provides the GNSS antenna location for underwater images collected at Looe Key, Florida, in July 2021, using the SQUID5 Structure-from-Motion...
Search relevance: 37.49 | Views last month: 0 -
This dataset contains surface sediment grain diameter measurements from in situ seafloor images collected in the lower Columbia River, Washington and Oregon, in 2021. Surface sediment grain...
Search relevance: 37.48 | Views last month: 0 -
A BlazeVideo camera has been set up an active ripple field within Grand Falls dune field, and takes an image every 10 minutes to record the ripple field movement. Data presented here span from...
Search relevance: 36.55 | Views last month: 0 -
These metadata describe bathymetric data collected during a September 2021 SWATHPlus survey of Whiskeytown Lake, California. Data were collected and processed by the U.S. Geological Survey (USGS),...
Search relevance: 36.28 | Views last month: 0 -
Airborne magnetic data are provided here as part of the data release, " Airborne magnetic and radiometric survey, Virginia and North Carolina Fall Zone, 2021." This website includes the processed...
Search relevance: 36.11 | Views last month: 0 -
This data provides AVIRIS-NG Bidirectional Reflectance Distribution Function (BRDF) and sunglint-corrected surface spectral reflectance images over the Atchafalaya and Terrebonne basins of the...
Search relevance: 35.87 | Views last month: 0
