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Geological processes and the management of groundwater resources in coastal areas

Published online by Cambridge University Press:  01 April 2016

H. Kooi  and
J. Groen
H. Kooi
Affiliation:
Department of Hydrology and Hydrogeology, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV, Amsterdam, the [email protected]
J. Groen
Affiliation:
Department of Hydrology and Hydrogeology, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV, Amsterdam, the [email protected]
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Abstract

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In this contribution, a case is made for the significance of sedimentation and sea-level change for groundwater management of coastal areas. In groundwater practice these geological processes are rarely considered. The role of sediment loading in causing anomalous fluid pressures and flow fields in relatively shallow aquifer systems is discussed and illustrated via both case studies and generic modelling studies. The role of sea-level changes in controlling current salinity distributions is discussed likewise. Central in the discussion is the concept of memory of groundwater systems, which provides the basic reason why processes that were operative in the geological past are still of relevance today. It is argued and shown that awareness and knowledge of the influence of sediment loading and sea level change on current hydrological conditions can lead to improved characterization of the distribution of hydraulic parameters and of the distribution of water quality in coastal areas. This improved characterization, in turn, serves to enhance the validity of impact assessment studies for the long-term development and management of those areas.

Keywords

ground waterwater resourceswater managementpaleohydrologysea-level changessedimentation
Type
Research Article
Information
Netherlands Journal of Geosciences , Volume 82 , Special Issue 1: Geofluids in the Netherlands , April 2003 , pp. 31 - 40
Copyright
Copyright © Stichting Netherlands Journal of Geosciences 2003

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