Raw survey data Iliamna Volcano, Alaska June 2012
type: Dataset
description: Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the U.S. Geological Survey (USGS) Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 meters (m) above terrain along block-style lines with a nominal spacing of 250 m. The survey was designed to cover the summit and flanks of Iliamna volcano and includes transit lines east of the volcano which provide additional information on nearby structures and glacial thickness and resistivity. There are data gaps near Iliamna’s summit due to poor flight visibility. Data acquisition, minimal processing, and initial inversions were conducted by SkyTEM Survey ApS and described in detail in the contractor’s report. The AEM depth of investigation varied with subsurface resistivity and averaged approximately 338 m. Raw digital data from production flights are provided and described in the data dictionary. Please see https://www.sciencebase.gov/catalog/item/5c8fb915e4b093882452b34a for the complete data package received from the contractor and the contractor’s report.
issued: 2025-11-19T19:22:49.751631
modified: 20200827
spatial: Location
contact point: Organization
  fn: Dana E Peterson
keyword: aeromagnetic-surveying
keyword: alaska
keyword: amerigeo
keyword: amerigeoss
keyword: ckan
keyword: electromagnetic-surveying
keyword: geo
keyword: geology-geophysics-and-geochemistry-science-center
keyword: geophysics
keyword: geoscientificinformation
keyword: geospatial-datasets
keyword: geoss
keyword: gggsc
keyword: hazards
keyword: iliamna-volcano
keyword: kenai-peninsula
keyword: landslides
keyword: national
keyword: north-america
keyword: resistivity
keyword: u-s-geological-survey
keyword: united-states
keyword: usgs
keyword: usgs-5d47a6f8e4b01d82ce8dd0af
keyword: usgs-mineral-resources-program
keyword: usgs-volcano-hazards-program
keyword: volcanology
theme: {geospatial}

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-08-06T23:41:35.497831
modified: 2025-11-19T19:22:49.726047
access URL: https://doi.org/10.5066/P949B5C2
media type: application/http

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-08-06T23:41:35.497825
modified: 2025-11-19T19:22:49.725287
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.5d47a6f8e4b01d82ce8dd0af.xml
media type: text/xml

US Migrating
type: Agent