Geochemical processes at a fresh/seawater interface in a shallow sandy aquifer

Martin Søgaard Andersen, Vibeke Margrethe Nyvang Iversen, Diederik Jan Postma

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

Abstract

Chemical processes in a natural fresh-/seawater mixing zone were studied in a shallow sandy aquifer. The dominant redox-processes are sulfate reduction and methanogenesis. Methanogenesis produces CO2, which causes calcite dissolution. The produced calcium induces ion exchange with sodium. The final result of these interactions between different types of geochemical processes is an anoxic groundwater enriched in bicarbonate and sodium.
Original languageEnglish
Title of host publicationInternational Conference on Saltwater Intrusion and Coastal Aquifers Monitoring, Modelling, and Management. : Proceedings
VolumeCD-ROM
Place of PublicationEssaouira, Morocco
PublisherSWICA
Publication date2001
Publication statusPublished - 2001
EventInternational Conference on Saltwater Intrusion and Coastal Aquifers Monitoring, Modelling, and Management. - Essaouira, Morocco
Duration: 1 Jan 2001 → …
Conference number: 1

Conference

ConferenceInternational Conference on Saltwater Intrusion and Coastal Aquifers Monitoring, Modelling, and Management.
Number1
CityEssaouira, Morocco
Period01/01/2001 → …

Cite this

Andersen, M. S., Iversen, V. M. N., & Postma, D. J. (2001). Geochemical processes at a fresh/seawater interface in a shallow sandy aquifer. In International Conference on Saltwater Intrusion and Coastal Aquifers Monitoring, Modelling, and Management.: Proceedings (Vol. CD-ROM). SWICA.