Schubert, Michael ; Michelsen, Nils ; Schmidt, Axel ; Eichenauer, Laura ; Knoeller, Kay ; Arakelyan, Alexander ; Harutyunyan, Lilith ; Schüth, Christoph (2024)
Age and origin of groundwater resources in the Ararat Valley, Armenia: a baseline study applying hydrogeochemistry and environmental tracers.
In: Hydrogeology Journal, 2021, 29 (7)
doi: 10.26083/tuprints-00023474
Article, Secondary publication, Publisher's Version
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Item Type: | Article | ||||||||||
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Type of entry: | Secondary publication | ||||||||||
Title: | Age and origin of groundwater resources in the Ararat Valley, Armenia: a baseline study applying hydrogeochemistry and environmental tracers | ||||||||||
Language: | English | ||||||||||
Date: | 26 March 2024 | ||||||||||
Place of Publication: | Darmstadt | ||||||||||
Year of primary publication: | November 2021 | ||||||||||
Place of primary publication: | Berlin ; Heidelberg | ||||||||||
Publisher: | Springer | ||||||||||
Journal or Publication Title: | Hydrogeology Journal | ||||||||||
Volume of the journal: | 29 | ||||||||||
Issue Number: | 7 | ||||||||||
DOI: | 10.26083/tuprints-00023474 | ||||||||||
Corresponding Links: | |||||||||||
Origin: | Secondary publication DeepGreen | ||||||||||
Abstract: | Within the Ararat Valley (Armenia), a continuously growing water demand (for irrigation and fish farming) and a simultaneous decline in groundwater recharge (due to climate change) result in increasing stress on the local groundwater resources. This detrimental development is reflected by groundwater-level drops and an associated reduction of the area with artesian conditions in the valley centre. This situation calls for increasing efforts aimed at more sustainable water resources management. The aim of this baseline study was the collection of data that allows for study on the origin and age distribution of the Ararat Valley groundwater based on environmental tracers, namely stable (δ²H, δ¹⁸O) and radioactive (³⁵S, ³H) isotopes, as well as physical-chemical indicators. The results show that the Ararat Valley receives modern recharge, despite its (semi-)arid climate. While subannual groundwater residence times could be disproved (³⁵S), the detected ³H pattern suggests groundwater ages of several decades, with the oldest waters being recharged around 60 years ago. The differing groundwater ages are reflected by varying scatter of stable isotope and hydrochemical signatures. The presence of young groundwater (i.e., younger that the 1970s), some containing nitrate, indicates groundwater vulnerability and underscores the importance of increased efforts to achieve sustainable management of this natural resource. Since stable isotope signatures indicate the recharge areas to be located in the mountains surrounding the valley, these efforts must not be limited to the central part of the valley where most of the abstraction wells are located. |
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Uncontrolled Keywords: | Groundwater residence time, Tritium, Radiosulphur, Stable isotopes, Armenia | ||||||||||
Status: | Publisher's Version | ||||||||||
URN: | urn:nbn:de:tuda-tuprints-234746 | ||||||||||
Classification DDC: | 500 Science and mathematics > 550 Earth sciences and geology | ||||||||||
Divisions: | 11 Department of Materials and Earth Sciences > Earth Science 11 Department of Materials and Earth Sciences > Earth Science > Hydrogeology |
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Date Deposited: | 26 Mar 2024 14:10 | ||||||||||
Last Modified: | 22 Apr 2024 09:42 | ||||||||||
SWORD Depositor: | Deep Green | ||||||||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/23474 | ||||||||||
PPN: | 517268213 | ||||||||||
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