Introducing the Okavango Delta, Botswana, airborne TEM survey

J. E. Podgorski, L. Kgotlhang, T. Ngwisanyi, C. Ploug, E. Auken, W. Kinzelbach, A. G. Green

Publikation: KonferencebidragArtikel ved konferencepeer review

1 Citationer (Scopus)

Abstrakt

The Okavango Delta, Botswana, is one of the largest inland deltas on the planet and is unique in that surface water remains remarkably fresh despite evapotranspiration being the dominant water removal mechanism. To help understand the phenomena of salt sequestration, airborne transient electromagnetic TEM data with 2 km line spacing were acquired over the entire delta in 2007-2008. These data have been inverted using a quasi-2D least-squares linear optimization scheme to produce a 5-layer resistivity model to 250 m depth. Comparison of the model with available borehole data shows a strong correlation between resistivity and lithology and salinity. Further analysis should contribute significantly to understanding the hydrogeology of the delta.

OriginalsprogEngelsk
DOI
StatusUdgivet - 2010
Udgivet eksterntJa
Begivenhed16th European Meeting of Environmental and Engineering Geophysics, Near Surface 2010 - Zurich, Schweiz
Varighed: 6 sep. 20108 sep. 2010

Konference

Konference16th European Meeting of Environmental and Engineering Geophysics, Near Surface 2010
Land/OmrådeSchweiz
ByZurich
Periode6/09/108/09/10

Programområde

  • Programområde 2: Vandressourcer

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