The use of airborne electromagnetic for efficient mapping of salt water intrusion and outflow to the sea: Azores island

Publikation: Bidrag til bog/antologi/rapport/proceedingKonferenceabstrakt i proceedingsForskning

  • Esben Auken
  • Casper Kirkegaard, Danmark
  • Joana Ribeiro, University of Lisbon, Portugal
  • Nikolaj Foged
  • Arjen Kok, Vitens, Holland
  • Geologisk Institut
Airborne electromagnetic (AEM) is an efficient tool for mapping groundwater resources in sedimentary environments. AEM delivers a very high data coverage and results in high-resolution electrical images of the subsurface. In particular the time domain methods (TEM) are well suited for mapping o0f not only the salt-fresh water boundary in the coastal zone, but also the mixing of fresh-salt-water on the seaside. Even freshwater layers under several meters of brackish water can be mapped.

Sufficient depth of investigation is obtained by time domain methods as they have a significant higher transmitter moment than frequency domain methods (FEM).

We discuss the advantages of using airborne systems in coastal area for understanding of saltwater intrusion problems. Examples are shown from surveys at the vest cost of Holland and in Denmark.
OriginalsprogEngelsk
TitelThe use of airborne electromagnetic for efficient mapping of salt water intrusion and outflow to the sea
Antal sider4
Udgivelsesår2010
StatusUdgivet - 2010
BegivenhedSWIM21 - 21st Salt Water Intrusion Meeting - Azores, Portugal
Varighed: 21 jun. 201026 jun. 2010

Konference

KonferenceSWIM21 - 21st Salt Water Intrusion Meeting
LandPortugal
ByAzores
Periode21/06/201026/06/2010

    Forskningsområder

  • skytem, aarhus geophysics, tem

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