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A side scan image collected with Humminbird Helix 10 on November 14, 2019. Side scan sonar creates a picture or an image of the riverbed. To generate an image, side scanners measures the strength of how loud the return sonar pings are.
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A slope raster generated from multibeam bathymetry and terrestrial lidar collected simultaneously on November 14, 2019. Slope represents the rate of change of elevation under the water column.
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An XYZ generated from multibeam bathymetry and terrestrial lidar collected simultaneously on November 14, 2019. An XYZ is the raw point data that generated the original digital elevation model. This XYZ file contains latitude, longitude, elevation and intensity values for each point measured by the multibeam sonar.
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A digital elevation model generated from multibeam bathymetry and terrestrial lidar collected simultaneously on November 14, 2019.
A high-resolution sidescan image of the Mississippi River, Lock and Dam 19 approach (downstream) was collected with a Humminbird Solix. Side-imaging sonar creates an image of underwater riverbed features by measuring the intensity of acoustic reflections. This mega side-imaging sonar data was collected and mosaicked to capture more detailed information on the condition of the lock approach to provide information for the construction and deployment of an underwater acoustic deterrent system.
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A digital elevation model hillshade generated from multibeam bathymetry and terrestrial lidar collected simultaneously on November 14, 2019. A hillshade is a grayscale 3D representation of a surface.
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A backscatter raster generated from multibeam bathymetry and terrestrial lidar collected simultaneously on November 14, 2019. Backscatter is the reflection of a signal and can help when determining bottom types. Harder bottom types (like rock) reflect more sound than softer bottom types (like mud), and smoother bottom types reflect more sound than rugged bottom types.
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Suspended particles are an essential component of large rivers influencing channel geomorphology, biogeochemical cycling of nutrients, and food web resources. The Upper Mississippi River (UMR) is a large floodplain river that exhibits pronounced spatiotemporal variation in environmental conditions and biota, providing an ideal environment for investigating dynamics of suspended particles in large river ecosystems. Here we investigated two questions: (1) How do suspended particle characteristics (e.g., size and morphology) vary temporally and spatially? and (2) What environmental variables have the strongest association with particle characteristics? Water sampling was conducted in June, August, and September of...


    map background search result map search result map Spatial and temporal dynamics of suspended particle characteristics and composition in Navigation Pool 19 of the Upper Mississippi River data Lock and Dam 19 Backscatter, 2019 Lock and Dam 19 Bathymetry Slope, 2019 Lock and Dam 19 DEM, 2019 Lock and Dam 19 Hillshade, 2019 Lock and Dam 19 Side Scan, 2019 Lock and Dam 19 XYZ, 2019 Lock and Dam 19 Bathymetry Slope, 2019 Lock and Dam 19 XYZ, 2019 Lock and Dam 19 DEM, 2019 Lock and Dam 19 Hillshade, 2019 Lock and Dam 19 Backscatter, 2019 Lock and Dam 19 Side Scan, 2019 Spatial and temporal dynamics of suspended particle characteristics and composition in Navigation Pool 19 of the Upper Mississippi River data