{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Victoria E Langenheim", "hasEmail": "mailto:zulanger@usgs.gov"}, "description": "This data release contains gridded aeromagnetic data from a dataset that merges two aeromagnetic surveys of northeastern California.  Data from the Alturas and Burney surveys were gridded and merged to provide a continuous, detailed aeromagnetic dataset of the region.  The merged dataset was then corrected for the inclination of the Earth's magnetic field (reduced to pole or rtp); match-filtering of the merged rtp gridded dataset provides three dipole-equivalent source layers at 0.85 km (shallow), 3.28 km (medium), and 16.4 (deep) km.  Magnetization boundaries were calculated using the maximum horizontal gradient method on the match-filtered gridded data. Lastly, a magnetic field caused by magnetic terrain was calculated to compare with observed magnetic field gridded values.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9TQGRDW", "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.6227acd4d34ee0c6b38b7fdd.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_6227acd4d34ee0c6b38b7fdd", "keyword": ["Alturas", "Canby", "USGS:6227acd4d34ee0c6b38b7fdd", "aeromagnetic surveying", "crust (earth)", "earthquakes", "geoscientificInformation", "magnetic anomaly", "magnetic field (earth)", "magnetometer measurement", "neotectonic processes"], "modified": "2023-08-14T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-122.0218, 40.4056, -119.9731, 42.0122", "theme": ["geospatial"], "title": "Aeromagnetic and derivative gridded data, and magnetization boundaries of northeastern California"}