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Firth (NE)

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Survey type M/EM-D (magnetic; airborne electromagnetic; collected in digital form)
Flown by Fugro Instruments
Date flown 03/07
Line spacing 0.28 (km)
Altitude 30 (m) above ground
Total distance 367 (km)
References
Smith, Bruce D., Abraham, Jared D., Cannia, James C., Steele, Gregory V., Hill, Patricia L., 2008, Helicopter Electromagnetic and Magnetic Geophysical Survey Data, Oakland, Ashland, and Firth Study Areas, Eastern Nebraska, March 2007; Open-File Report 2008-1018

https://pubs.er.usgs.gov/publication/ofr20081018
Counties Gage - Lancaster
Overlapping surveys

Data: Magnetic (M-D)

Metadata Questions & Answers - Outline - Parseable text - XML
Download NE_4314.zip

Data: Magnetic, electromagnetic (M/EM-D)

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Download 1018