{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Katie (KT) M. Hulsey", "hasEmail": "mailto:khulsey@usgs.gov"}, "description": "Time domain Electromagnetic (TEM) data were collected at 25 sites in the Illinois River Basin (IRB) to provide geologic data for the Next Generation Water Observing System (NGWOS) IRB program. Data were collected by two teams, each equipped with ABEM WalkTEM2 (https://www.guidelinegeo.com/product/abem-walktem-2/) system. Data were processed and numerically inverted to derive one-dimensional resistivity models using Aarhus SPIA software (https://www.aarhusgeosoftware.dk/aarhus-spia-tem).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13WHWZR", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.66840f48d34e0f592272b404.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_66840f48d34e0f592272b404", "keyword": ["Aquifer characterization", "Geophysics", "Illinois", "Illinois River basin", "NGWOS", "TEM", "Time domain electromagnetic", "USGS:66840f48d34e0f592272b404", "geoscientificInformation"], "modified": "2025-09-23T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-91.0000, 39.0000, -87.5000, 42.5000", "theme": ["geospatial"], "title": "Time Domain Electromagnetic (TEM) data collected for the Next Generation Water Observing System (NGWOS) Illinois River Basin (IRB) Program, 2022"}