Physiographic and climatic controls on regional groundwater dynamics

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Physiographic and climatic controls on regional groundwater dynamics

Haaf, Ezra, 1985 (author): Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences

Giese, Markus, 1985 (author): Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences

Heudorfer, Benedikt (author): Albert-Ludwigs-Universität Freiburg,University of Freiburg

Stahl, Kerstin (author): Albert-Ludwigs-Universität Freiburg,University of Freiburg

Barthel, Roland, 1967 (author): Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences

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2020
2020
English.
In: Water Resources Research. - 0043-1397 .- 1944-7973. ; 56:10

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Journal article (peer-reviewed)

Abstract Subject headings

The main goal of this study is to explore whether the ideas established by surface water hydrologists in the context of “PUB” (predictions in ungauged basins) can be useful in hydrogeology. The concrete question is whether it is possible to create predictive models for groundwater systems with no or few observations based on knowledge derived from similar groundwater systems which are well‐observed. To do so, this study analyses the relationship between temporal dynamics of groundwater levels and climatic and physiographic characteristics. The analysis is based on data from 341 wells in Southern Germany with ten‐year daily groundwater hydrographs. Observation wells are used in confined and unconfined sand and gravel aquifers from narrow mountainous valleys as well as more extensive lowland alluvial aquifers. Groundwater dynamics at each location are summarized with 46 indices describing features of groundwater hydrographs. Besides borehole log‐derived geologic information, local and regional morphologic characteristics as well as topography‐derived boundary and climatic descriptors were derived for each well. Regression relationships were established by mining the data for associations between dynamics and descriptors with forward stepwise regression at a confidence level >95%. The most important predictors are geology and boundary conditions and secondarily, climate, as well as some topographic features, such as regional convergence. The multiple regression models are in general agreement with process understanding linked to groundwater dynamics in unconfined aquifers. This systematic investigation suggests that statistical regionalization of groundwater dynamics in ungauged aquifers based on map‐derived physiographic and climatic controls may be feasible.

Subject headings

TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Havs- och vattendragsteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Ocean and River Engineering (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Annan naturresursteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Other Environmental Engineering (hsv//eng)
NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)

Keyword

Groundwater hydrograph
Groundwater dynamics index
Southern Germany
Groundwater regionalization
Multiple regression
selective inference
Southern Germany; Groundwater dynamics index; Groundwater hydrograph; Groundwater regionalization; Multiple regression; Selective inference

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By the author/editor: Haaf, Ezra, 1985; Giese, Markus, 1 ...; Heudorfer, Bened ...; Stahl, Kerstin; Barthel, Roland, ...

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Water Engineerin ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Environmental En ...; and Ocean and River ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Environmental En ...; and Other Environmen ...

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Oceanography Hyd ...

Articles in the publication: Water Resources ...

By the university: Chalmers University of Technology; University of Gothenburg

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