Airborne geophysical survey: Oakland HEM data
This report is a digital data release for a helicopter
electromagnetic and magnetic survey that was conducted during March
2007 in three 93-square-kilometer (36-square-mile) areas of eastern
Nebraska as part of a joint State of Nebraska and U.S. Geological
Survey study. The objective of the survey is to improve the
understanding of the relationship between surface-water and ground-
water systems critical to developing water resource management
programs. The electromagnetic equipment consisted of six different
coil-pair orientations that measured electrical resistivity at
separate frequencies from about 400 hertz to about 115,000 hertz.
The electromagnetic data were converted to electrical resistivity
geo-referenced grids and maps, each representing different
approximate depths of investigation for each area. The range of
subsurface investigation is comparable to the depth of shallow
aquifers. The three areas selected for the study, Ashland, Firth, and
Oakland, have glacial terrains and bedrock that typify different
hydrogeologic settings for surface water and ground water in eastern
Nebraska. The geophysical and hydrologic information from U.S.
Geological Survey studies are being used by resource managers to
develop ground-water resource plans for the area.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Bruce D. Smith", "@type": "vcard:Contact", "hasEmail": "mailto:bsmith@usgs.gov" } |
| description | This report is a digital data release for a helicopter electromagnetic and magnetic survey that was conducted during March 2007 in three 93-square-kilometer (36-square-mile) areas of eastern Nebraska as part of a joint State of Nebraska and U.S. Geological Survey study. The objective of the survey is to improve the understanding of the relationship between surface-water and ground- water systems critical to developing water resource management programs. The electromagnetic equipment consisted of six different coil-pair orientations that measured electrical resistivity at separate frequencies from about 400 hertz to about 115,000 hertz. The electromagnetic data were converted to electrical resistivity geo-referenced grids and maps, each representing different approximate depths of investigation for each area. The range of subsurface investigation is comparable to the depth of shallow aquifers. The three areas selected for the study, Ashland, Firth, and Oakland, have glacial terrains and bedrock that typify different hydrogeologic settings for surface water and ground water in eastern Nebraska. The geophysical and hydrologic information from U.S. Geological Survey studies are being used by resource managers to develop ground-water resource plans for the area. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://mrdata.usgs.gov/magnetic/show-survey.php?id=NE_4312", "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.baf5b123-2a47-4f7a-92b4-7839836c566a.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_baf5b123-2a47-4f7a-92b4-7839836c566a |
| keyword |
[ "Nebraska", "Oakland", "USGS:baf5b123-2a47-4f7a-92b4-7839836c566a", "environment", "f31021 = Burt", "f31039 = Cuming", "geophysics", "geoscientificInformation", "geospatial datasets", "imageryBaseMapsEarthCover" ] |
| modified | 2020-11-10T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -96.63275, 41.77225, -96.43825, 41.90225 |
| theme |
[ "geospatial" ] |
| title | Airborne geophysical survey: Oakland HEM data |
