Occurrence of salt water above fresh water in dynamic equilibrium in a coastal groundwater flow system near De Panne, Belgium
A salt water lens is found above fresh water under the shore between Dunkerque (France) and Nieuwpoort (Belgium). This inverse density distribution is in a dynamic equilibrium. It develops due to the infiltration of salt water on the back shore during high tide. Under this salt water lens, water inf...
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| Veröffentlicht in: | Hydrogeology journal 2006-04, Vol.14 (4), p.462-472 |
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| description | A salt water lens is found above fresh water under the shore between Dunkerque (France) and Nieuwpoort (Belgium). This inverse density distribution is in a dynamic equilibrium. It develops due to the infiltration of salt water on the back shore during high tide. Under this salt water lens, water infiltrated in the adjacent dune area flows towards the sea and discharges at the seabed. This water quality distribution differs from the classic salt water wedge under fresh water described in the literature. Here, the evolution to this water quality distribution is simulated with a density dependent numerical model. A large tidal range, shore morphology and a permeable groundwater reservoir are the main conditions for the observed water quality distribution. By altering these conditions, intermediate water quality distributions between the classic salt water wedge and the one discussed here develop. Based on these simulations, it is expected that similar kinds of inverse density distribution could be present in a number of coastal areas, which have tides, a gently sloping shore and a permeable substratum. |
| doi_str_mv | 10.1007/s10040-005-0446-5 |
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This inverse density distribution is in a dynamic equilibrium. It develops due to the infiltration of salt water on the back shore during high tide. Under this salt water lens, water infiltrated in the adjacent dune area flows towards the sea and discharges at the seabed. This water quality distribution differs from the classic salt water wedge under fresh water described in the literature. Here, the evolution to this water quality distribution is simulated with a density dependent numerical model. A large tidal range, shore morphology and a permeable groundwater reservoir are the main conditions for the observed water quality distribution. By altering these conditions, intermediate water quality distributions between the classic salt water wedge and the one discussed here develop. Based on these simulations, it is expected that similar kinds of inverse density distribution could be present in a number of coastal areas, which have tides, a gently sloping shore and a permeable substratum.</description><identifier>ISSN: 1431-2174</identifier><identifier>EISSN: 1435-0157</identifier><identifier>DOI: 10.1007/s10040-005-0446-5</identifier><language>eng</language><publisher>Heidelberg: Berlin/Heidelberg : Springer-Verlag</publisher><subject>Coastal aquifers ; Coastal zone ; Flow system ; Groundwater flow ; Groundwater reservoirs ; Intermediate water ; Marine ; Mathematical models ; Numerical modelling ; Ocean floor ; Saline water ; Salt-water/fresh-water relations ; Salts ; Tidal range ; Water quality</subject><ispartof>Hydrogeology journal, 2006-04, Vol.14 (4), p.462-472</ispartof><rights>Springer-Verlag 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a381t-5e5e5d1e2c37e49631b4a3e103c87930b67226f97c0144f746fcba06cd1e065a3</citedby><cites>FETCH-LOGICAL-a381t-5e5e5d1e2c37e49631b4a3e103c87930b67226f97c0144f746fcba06cd1e065a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Vandenbohede, A</creatorcontrib><creatorcontrib>Lebbe, L</creatorcontrib><title>Occurrence of salt water above fresh water in dynamic equilibrium in a coastal groundwater flow system near De Panne, Belgium</title><title>Hydrogeology journal</title><description>A salt water lens is found above fresh water under the shore between Dunkerque (France) and Nieuwpoort (Belgium). 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This inverse density distribution is in a dynamic equilibrium. It develops due to the infiltration of salt water on the back shore during high tide. Under this salt water lens, water infiltrated in the adjacent dune area flows towards the sea and discharges at the seabed. This water quality distribution differs from the classic salt water wedge under fresh water described in the literature. Here, the evolution to this water quality distribution is simulated with a density dependent numerical model. A large tidal range, shore morphology and a permeable groundwater reservoir are the main conditions for the observed water quality distribution. By altering these conditions, intermediate water quality distributions between the classic salt water wedge and the one discussed here develop. Based on these simulations, it is expected that similar kinds of inverse density distribution could be present in a number of coastal areas, which have tides, a gently sloping shore and a permeable substratum.</abstract><cop>Heidelberg</cop><pub>Berlin/Heidelberg : Springer-Verlag</pub><doi>10.1007/s10040-005-0446-5</doi><tpages>11</tpages></addata></record> |
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| subjects | Coastal aquifers Coastal zone Flow system Groundwater flow Groundwater reservoirs Intermediate water Marine Mathematical models Numerical modelling Ocean floor Saline water Salt-water/fresh-water relations Salts Tidal range Water quality |
| title | Occurrence of salt water above fresh water in dynamic equilibrium in a coastal groundwater flow system near De Panne, Belgium |
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