Mini-SkyTEM: A new airborne transient EM system for near-surface aquifer mapping

C. Schamper, E. Auken

Publikation: KonferencebidragArtikel ved konferencepeer review

1 Citationer (Scopus)

Abstrakt

The SkyTEM system is being developed for almost ten years in Denmark and has been specially designed for the groundwater mapping. Through the years more and more early gates are becoming interpretable, and for almost two years gates below 10 μs have been used generically. The electronics and processing developments end recently with the new Mini-SkyTEM system which provides a first gate at 5-6 μs. This new system can also be flown up to a speed of 140 km/h, allowing a same coverage at a lower cost compared to the larger systems. The first pilot survey of the new Mini-SkyTEM was flown in June 2011 inside the NiCA project where the purpose is to model the oxydo-reduction of the nitrates in the nearsurface aquifers for pollution management. Despite its very low transmitter moment, the Mini-SkyTEM system provides a depth of investigation of 100 m considering a mean resistivity of 50 Ωm. But more importantly, a good correlation between the resistivity boundaries and the geological interfaces defined in the borehole logs is observed in the upper 20 m. This gives us confidence in the future use of this transient airborne EM system for the mapping of the very near-surface aquifers.

OriginalsprogEngelsk
DOI
StatusUdgivet - 2012
Udgivet eksterntJa
Begivenhed1st EAGE/GRSG Remote Sensing Workshop and Exhibition - Paris, Frankrig
Varighed: 3 sep. 20125 sep. 2012

Konference

Konference1st EAGE/GRSG Remote Sensing Workshop and Exhibition
Land/OmrådeFrankrig
ByParis
Periode3/09/125/09/12

Programområde

  • Programområde 2: Vandressourcer

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