700kHz Multibeam Backscatter Mosaics of select Rock Outcrops of the St. Croix River, May 2021
This dataset is a digital image mosaic of the backscatter for five (of six) sites where known rock structures exist in the St. Croix River. Backscatter is the strength of the returned signal, or reflectivity, of the riverbed and provides information about bed composition. This data can be used to investigate properties of the riverbed, such as hardness, sediment characteristics and even sediment grain size. Backscatter information will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. MBES bathymetry and backscatter data are collected at the same time; and were collected using a Norbit integrated wide band multibeam system compact (iWBMSc) sonar unit. All hydroacoustic data were collected in early May of 2021, and the backscatter mosaics are provided in GeoTiff format.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Jenny L Hanson",
"@type": "vcard:Contact",
"hasEmail": "mailto:jhanson@usgs.gov"
}
|
| description | This dataset is a digital image mosaic of the backscatter for five (of six) sites where known rock structures exist in the St. Croix River. Backscatter is the strength of the returned signal, or reflectivity, of the riverbed and provides information about bed composition. This data can be used to investigate properties of the riverbed, such as hardness, sediment characteristics and even sediment grain size. Backscatter information will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. MBES bathymetry and backscatter data are collected at the same time; and were collected using a Norbit integrated wide band multibeam system compact (iWBMSc) sonar unit. All hydroacoustic data were collected in early May of 2021, and the backscatter mosaics are provided in GeoTiff format. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/P9EUMCSF",
"mediaType": "application/http",
"description": "Landing page for access to the data"
},
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6359a287d34ebe442503eb96.xml"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6359a287d34ebe442503eb96 |
| keyword |
[
"Minnesota",
"Rock Outcrop",
"Rock Substrate",
"USGS-EMA-LOW-SB SMC: Freshwater mussels",
"USGS:6359a287d34ebe442503eb96",
"Wisconsin",
"acoustic doppler current profiling",
"bathymetry measurement",
"benthic ecosystems",
"endangered species",
"image mosaics",
"rivers",
"sea-floor acoustic reflectivity",
"sidescan sonar"
]
|
| modified | 2025-02-27T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -92.7636, 45.2165, -92.6848, 45.3712 |
| theme |
[
"Geospatial"
]
|
| title | 700kHz Multibeam Backscatter Mosaics of select Rock Outcrops of the St. Croix River, May 2021 |
