Open-File Report 2011–1304
In June 2010, the U.S. Geological Survey conducted airborne electromagnetic and magnetic surveys of the Yukon Flats and Fort Wainwright study areas in central Alaska. These data were collected to estimate the three-dimensional distribution of permafrost at the time of the survey. These data were also collected to evaluate the effectiveness of these geophysical methods at mapping permafrost geometry and to better define the physical properties of the subsurface in discontinuous permafrost areas. This report releases digital data associated with these surveys. Inverted resistivity depth sections are also provided in this data release, and data processing and inversion methods are discussed.
First posted January 9, 2012
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Ball, L.B., Smith, B.D., Minsley, B.J., Abraham, J.D., Voss, C.I., Astley, B.N., Deszcz-Pan, Maria, and Cannia, J.C., 2011, Airborne electromagnetic and magnetic geophysical survey data of the Yukon Flats and Fort Wainwright areas, central Alaska, June 2010: U.S. Geological Survey Open-File Report 2011–1304, 21 p.
Purpose and Scope
Description of Study Areas
Airborne Electromagnetic and Magnetic Survey: Methods and Measurements
Inversion of Electromagnetic Data
Model Assessment Using the Depth of Investigation (DOI) Metric
Geophysical Data Overview
Appendix 1: Fugro Airborne, Ltd., Geophysical Report
Appendix 2: Calibration Procedure Summary
Appendix 3: Calibration Procedure Summary