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Conservative mixing or chemically reacting: scale-dependency of processes at the stream water-groundwater interface

Title data

Lischeid, Gunnar:
Conservative mixing or chemically reacting: scale-dependency of processes at the stream water-groundwater interface.
In: Gehreis, Hans (ed.): Impact of Human Activity on Groundwater Dynamics. - Wallingford : IAHS , 2001 . - pp. 199-204 . - (IAHS Publication ; 269 )
ISBN 1901502562

Abstract in another language

Due to hypoxic conditions, the riparian zone at the interface between groundwater and stream water can have substantial impacts on stream water quality. This was investigated in a small-forested catchment. The extension of the hypoxic zone was determined by depth oriented groundwater sampling and a steel rod survey. Concentrations of the major solutes were determined simultaneously in the stream water, the shallow and the deeper groundwater. Based on the steel rod survey, the first order stream is entirely contained within a thin hypoxic zone above the deeper oxic aquifer. In general, hypoxia has an impact on NO[3][-], Fe and Mn, but not on SO[4][2-] concentrations in the shallow groundwater and the stream water. However, during storm flow, this zone is by-passed by a substantial portion of the runoff, which occurs in the topsoil layer above the hypoxic zone.

Further data

Item Type: Article in a book
Refereed: Yes
Additional notes: BAYCEER42801
BAYCEER7514
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Ecological Modelling
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 30 Sep 2015 05:56
Last Modified: 13 Nov 2015 11:30
URI: https://eref.uni-bayreuth.de/id/eprint/19890