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N. Foged

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

Research output: Contribution to book/anthology/report/proceedingConference abstract in proceedingsResearch

  • Esben Auken
  • Casper Kirkegaard, Denmark
  • Joana Ribeiro, University of Lisbon, Portugal
  • Nikolaj Foged
  • Arjen Kok, Vitens, Netherlands
  • Department of Earth Sciences
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.
Original languageEnglish
Title of host publicationThe use of airborne electromagnetic for efficient mapping of salt water intrusion and outflow to the sea
Number of pages4
Publication year2010
Publication statusPublished - 2010
EventSWIM21 - 21st Salt Water Intrusion Meeting - Azores, Portugal
Duration: 21 Jun 201026 Jun 2010

Conference

ConferenceSWIM21 - 21st Salt Water Intrusion Meeting
LandPortugal
ByAzores
Periode21/06/201026/06/2010

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