Geochemical sediment core data (KK 12-1 and KK 12-2) covering 31 kyrs from Lake Karakul, Tajikistan


The Central Asian Pamir Mountains (Pamirs) are a high-altitude region sensitive to climatic change, with only few paleoclimatic records available. To examine glacial-interglacial hydrological changes in the region, we analysed geochemical parameters of a 31-kyrs record from Lake Karakul and performed a set of experiments with climate models to interpret the results. δD values of terrestrial biomarkers showed distinct insolation driven trends reflecting major shifts of water vapor sources. For aquatic biomarkers, positive δD shifts driven by changes in precipitation seasonality, were observed at ca. 31-30, 28-26, and 17-14 kyrs BP. Multi-proxy 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.

Supplement to: Aichner, Bernhard; Makhmudov, Zafar; Rajabov, Ilhomjon; Zhang, Qiong; Pausata, Francesco S R; Werner, Martin; Heinecke, Liv; Kuessner, Marie L; Feakins, Sarah J; Sachse, Dirk; Mischke, Steffen (2019): Hydroclimate in the Pamirs was driven by changes in precipitation‐evaporation seasonality since the last glacial period. Geophysical Research Letters

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Creator Aichner, Bernhard ORCID logo; Makhmudov, Zafar; Rajabov, Ilhomjon; Zhang, Qiong; Pausata, Francesco S R ORCID logo; Werner, Martin ORCID logo; Heinecke, Liv ORCID logo; Kuessner, Marie L ORCID logo; Feakins, Sarah J ORCID logo; Sachse, Dirk ORCID logo; Mischke, Steffen ORCID logo
Publisher PANGAEA
Publication Year 2019
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 9 datasets
Discipline Earth System Research
Spatial Coverage (73.533 LON, 39.018 LAT)
Temporal Coverage Begin 2012-04-22T00:00:00Z
Temporal Coverage End 2012-04-23T00:00:00Z