A multipurpose platform towed TEM-system imagining the top 100m of the subsurface; surface, water and snow

E. Auken, P. Maurya, A. V. Christiansen, J. Lane, E. White, R. Adams

Publikation: KonferencebidragArtikel ved konferencepeer review

Abstrakt

We present new developments of the versatile towed transient electromagnetic system (tTEM). The system now meets the demand of near surface mapping down to 100m and is suitable for application not only ground-based but also in aquatic (rivers, lakes etc.) and snow environments. The receiver technology of the system has been upgraded and it has a 4 times lower noise level compared to previous system, increasing the depth of investigation down to 100 m. The latter two system are called FloaTEM and SnowTEM, respectively. FloaTEM surveys were conducted in several parts of United States including the Mississippi delta region for mapping and characterizing the alluvial aquifer system below the river beds. The results show that the FloaTEM system produces detailed subsurface resistivity images in quick time compared to other geophysical methods. We conducted over 300 km of survey along several rivers within a week in the Mississippi delta region. The SnowTEM system uses a 4 turn, 4 m × 4 m transmitter coil and a specially designed low noise receiver coil. It has been put on skies and is towed behind a snow scooter or a snow robot.

OriginalsprogEngelsk
StatusUdgivet - 2019
Begivenhed25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019 - The Hague, Holland
Varighed: 8 sep. 201912 sep. 2019

Konference

Konference25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019
Land/OmrådeHolland
ByThe Hague
Periode8/09/1912/09/19

Programområde

  • Programområde 2: Vandressourcer

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