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Comparative hydrogeology – reference analysis of groundwater dynamics from neighbouring observation wells

Journal article
Authors Markus Giese
Ezra Haaf
Benedikt Heudorfer
Roland Barthel
Published in Hydrological Sciences Journal
ISSN 0262-6667
Publication year 2020
Published at Department of Earth Sciences
Language en
Links https://doi.org/10.1080/02626667.20...
https://www.tandfonline.com/doi/ful...
Keywords groundwater dynamics; index-based time series analysis; flow system; Tóthian groundwater flow concept, regional scale
Subject categories Hydrology, Oceanography, Hydrology, Water Resources

Abstract

Groundwater level fluctuations are caused by spatial and temporal superposition of processes within and outside the aquifer system. Most of the subsurface processes are usually observed on a small scale. Upscaling to the regional scale, as required for future climate change scenarios, is difficult due to data scarcity and increasing complexity. In contrast to the limited availability of system characteristics, high-resolution data records of groundwater hydrographs are more generally available. Exploiting the information contained in these records should thus be a priority for analysis of the chronical lack of data describing groundwater system characteristics. This study analyses the applicability of 63 indices derived from daily hydrographs to quantify different dynamics of groundwater levels in unconfined gravel aquifers from three groundwater regions (Bavaria, Germany). Based on the results of two different skill tests, the study aids index selection for different dynamic components of groundwater hydrographs.

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