NDLI: Seasonal Variations in Groundwater Chemisty Near Lake Belau, Schleswig-Holstein, Northern Germany

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Seasonal Variations in Groundwater Chemisty Near Lake Belau, Schleswig-Holstein, Northern Germany

Content Provider	Springer Nature Link
Author	Scheytt, T.
Copyright Year	1997
Abstract	The groundwater composition in an unconfined sandy aquifer of Quaternary age in the Bornhöved Lakes research area, Germany, exhibits not only spatial but also temporal variability. The aquifer has a thickness of about 40 m, and the thickness of the unsaturated zone ranges from 0.5–20 m. Groundwater chemistry was studied in four multilevel wells on the west bank of Lake Belau and in one multilevel well on the east bank; these wells are situated in both arable and forested land. Groundwater from these wells has seasonal variations of physico-chemical parameters and of the concentration of groundwater constituents. Beneath arable land, large variations occur in the concentrations of potassium, calcium, magnesium, and nitrate near the water table. Beneath forested land, large variations occur seasonally in the contents of sodium, chloride, and sulfate, together with lower concentrations of nitrate. These changes are caused mainly by seasonal variations in groundwater recharge. La composition de l'eau souterraine d'un aquifère non captif de sables quaternaires, étudié dans la région des lacs Bornhöved (Allemagne), montre des variations à la fois spatiales et temporelles. L'aquifère est épais d'environ 40 m et sa zone non saturée de 0,5 à 20 m. La chimie de l'eau souterraine a étéétudiée dans quatre puits à niveaux d'eau multiples sur la rive ouest du lac Belau et dans un puits à niveaux multiples, sur la rive est. Les puits sont situés en zones de cultures et de forêts. Dans ce puits, l'eau souterraine suit des variations saisonnières des paramètres physico-chimiques et des teneurs en substances dissoutes. Sous les terres cultivées, les teneurs en K, Ca, Mg et NO$_{3}$ varient largement, au voisinage de la surface piézométrique. Sous les forêts, ce sont celles en Na, Cl et SO$_{4}$ qui varient, en association avec des teneurs en NO$_{3}$ faibles. Ces modifications sont dues essentiellement aux variations saisonnières de la recharge de la nappe. La composición del agua subterránea en un acuífero arenoso libre de edad cuaternaria en la zona de los Lagos de Bornhöved, Alemania, muestra una variación espacial y temporal. El acuífero un espesor de unos 40 m y la zona no saturada oscila entre 0.5 y 20 m. Para obtener datos hidroquímicos, se han muestreado cuatro sondeos puntuales multi-nivel en la zona oeste del lago Belau y uno más en la zona este. Los sondeos se ubican en áreas agrícolas y forestales. El agua subterránea procedente de estos sondeos muestra variaciones estacionales de ciertos parámetros fisico-químicos. Bajo las zonas agrícolas, se producen importantes variaciones en la concentración de potasio, calcio, magnesio y nitrato cerca del nivel freático. Bajo las zonas forestales, aparece una variabilidad estacional de sodio, cloro y sulfato, a la vez que se dan bajas concentraciones de nitrato. La causa de estas variaciones se atribuye principalmente a la variabilidad estacional de la recarga.
Starting Page	86
Ending Page	95
Page Count	10
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	5
Issue Number	2
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-11-20
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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Seasonal Variations in Groundwater Chemisty Near Lake Belau, Schleswig-Holstein, Northern Germany

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