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Hydroclimate in the...
Hydroclimate in the Pamirs Was Driven by Changes in Precipitation-Evaporation Seasonality Since the Last Glacial Period
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Aichner, Bernhard (author)
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Makhmudov, Zafar (author)
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Rajabov, Iljomjon (author)
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- Zhang, Qiong (author)
- Stockholms universitet,Institutionen för naturgeografi
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Pausata, Francesco S. R. (author)
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Werner, Martin (author)
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Heinecke, Liv (author)
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Kuessner, Marie L. (author)
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Feakins, Sarah J. (author)
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Sachse, Dirk (author)
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Mischke, Steffen (author)
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 46:23, s. 13972-13983
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The Central Asian Pamir Mountains (Pamirs) are a high-altitude region sensitive to climatic change, with only few paleoclimatic records available. To examine the glacial-interglacial hydrological changes in the region, we analyzed the geochemical parameters of a 31-kyr record from Lake Karakul and performed a set of experiments with climate models to interpret the results. delta D values of terrestrial biomarkers showed insolation-driven trends reflecting major shifts of water vapor sources. For aquatic biomarkers, positive delta D shifts driven by changes in precipitation seasonality were observed at ca. 31-30, 28-26, and 17-14 kyr BP. Multiproxy paleoecological data and modelling results suggest that increased water availability, induced by decreased summer evaporation, triggered higher lake levels during those episodes, possibly synchronous to northern hemispheric rapid climate events. We conclude that seasonal changes in precipitation-evaporation balance significantly influenced the hydrological state of a large waterbody such as Lake Karakul, while annual precipitation amount and inflows remained fairly constant.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- climate
- biomarker
- geochemistry
- modelling
- paleoclimate
- hydrology
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Aichner, Bernhar ...
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Makhmudov, Zafar
-
Rajabov, Iljomjo ...
-
Zhang, Qiong
-
Pausata, Frances ...
-
Werner, Martin
-
show more...
-
Heinecke, Liv
-
Kuessner, Marie ...
-
Feakins, Sarah J ...
-
Sachse, Dirk
-
Mischke, Steffen
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Geophysical Rese ...
- By the university
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Stockholm University