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- Nygren, MichelleGothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences (author)
Exploring groundwater drought responsiveness in lowland post‑glacial environments
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022-08-08
- Springer Science and Business Media LLC,2022
Numbers
- LIBRIS-ID:oai:gup.ub.gu.se/317855
- https://gup.ub.gu.se/publication/317855URI
- https://doi.org/10.1007/s10040-022-02521-5DOI
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- Language:English
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Notes
- Groundwater drought response to meteorological forcing depends on initial hydrological conditions. This makes it difficult to characterise groundwater droughts and identify the drought vulnerability of aquifers. The objective is to increase the understanding of groundwater memory and response to meteorological forcing in lowland post-glacial environments. Eighty-one groundwater hydrographs are analysed, using the standardised groundwater level index (SGI) and the precipitation index. Memory and response times are assessed using auto- and cross-correlation functions. Response time is estimated by comparing two approaches: (1) the traditional use of the maximum cross-correlation, and (2) the alternative use of the cross-correlation slope. Results are interpreted for different hydrogeological settings. The analysis showed that sand aquifers have the longest memory and response times, particularly in confined settings where the memory could be over 4 years. Silts and tills have relatively short memories and response times, at less than 1 year, though median values for silt are higher than for unconfined sand aquifers. In this study, estimating response time using the correlation slope is superior at capturing the initial response time of groundwater to precipitation. However, the results showed that groundwater anomalies in lowland post-glacial environments are sometimes more influenced by climate teleconnections than concurrent forcing. This emphasises the need for a holistic approach for the characterisation and projection of groundwater drought, as it develops in simultaneous response to meteorological forcing at different timescales.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Klimatforskning hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Climate Research 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
- NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap Multidisciplinär geovetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geosciences, Multidisciplinary hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap Geologi hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geology hsv//eng
- Groundwater statistics Cold regions hydrogeology Standardised groundwater index Drought Sweden Finland Canada
Added entries (persons, corporate bodies, meetings, titles ...)
- Barthel, Roland,1967Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xbarro (author)
- Allen, Diana M. (author)
- Giese, Markus,1985Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xgiesm (author)
- Göteborgs universitetInstitutionen för geovetenskaper (creator_code:org_t)
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- In:Hydrogeology Journal: Springer Science and Business Media LLC30, s. 1937-19611431-21741435-0157
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