Schubert, Michael ; Michelsen, Nils ; Schmidt, Axel ; Eichenauer, Laura ; Knoeller, Kay ; Arakelyan, Alexander ; Harutyunyan, Lilith ; Schüth, Christoph (2021)
Age and origin of groundwater resources in the Ararat Valley, Armenia: a baseline study applying hydrogeochemistry and environmental tracers.
In: Hydrogeology Journal, 29 (7)
doi: 10.1007/s10040-021-02390-4
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (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.
Typ des Eintrags: | Artikel | ||||||||||
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Erschienen: | 2021 | ||||||||||
Autor(en): | Schubert, Michael ; Michelsen, Nils ; Schmidt, Axel ; Eichenauer, Laura ; Knoeller, Kay ; Arakelyan, Alexander ; Harutyunyan, Lilith ; Schüth, Christoph | ||||||||||
Art des Eintrags: | Bibliographie | ||||||||||
Titel: | Age and origin of groundwater resources in the Ararat Valley, Armenia: a baseline study applying hydrogeochemistry and environmental tracers | ||||||||||
Sprache: | Englisch | ||||||||||
Publikationsjahr: | November 2021 | ||||||||||
Ort: | Berlin ; Heidelberg | ||||||||||
Verlag: | Springer | ||||||||||
Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Hydrogeology Journal | ||||||||||
Jahrgang/Volume einer Zeitschrift: | 29 | ||||||||||
(Heft-)Nummer: | 7 | ||||||||||
DOI: | 10.1007/s10040-021-02390-4 | ||||||||||
Zugehörige Links: | |||||||||||
Kurzbeschreibung (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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Alternatives oder übersetztes Abstract: |
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Freie Schlagworte: | Groundwater residence time, Tritium, Radiosulphur, Stable isotopes, Armenia | ||||||||||
Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften | ||||||||||
Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Hydrogeologie |
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Hinterlegungsdatum: | 27 Mär 2024 06:55 | ||||||||||
Letzte Änderung: | 27 Mär 2024 06:55 | ||||||||||
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Age and origin of groundwater resources in the Ararat Valley, Armenia: a baseline study applying hydrogeochemistry and environmental tracers. (deposited 26 Mär 2024 14:10)
- Age and origin of groundwater resources in the Ararat Valley, Armenia: a baseline study applying hydrogeochemistry and environmental tracers. (deposited 27 Mär 2024 06:55) [Gegenwärtig angezeigt]
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