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Climate of the Past An interactive open-access journal of the European Geosciences Union
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CP | Articles | Volume 15, issue 1
Clim. Past, 15, 73–90, 2019
https://doi.org/10.5194/cp-15-73-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: The 4.2 ka BP climatic event

Clim. Past, 15, 73–90, 2019
https://doi.org/10.5194/cp-15-73-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 15 Jan 2019

Research article | 15 Jan 2019

Indian winter and summer monsoon strength over the 4.2 ka BP event in foraminifer isotope records from the Indus River delta in the Arabian Sea

Alena Giesche et al.
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63KA_DataFile_CP.xlsx A. Giesche, M. Staubwasser, C. A. Petrie, and D. A. Hodell http://eprints.esc.cam.ac.uk/4371/

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Short summary
A foraminifer oxygen isotope record from the northeastern Arabian Sea was used to reconstruct winter and summer monsoon strength from 5.4 to 3.0 ka. We found a 200-year period of strengthened winter monsoon (4.5–4.3 ka) that coincides with the earliest phase of the Mature Harappan period of the Indus Civilization, followed by weakened winter and summer monsoons by 4.1 ka. Aridity spanning both rainfall seasons at 4.1 ka may help to explain some of the observed archaeological shifts.
A foraminifer oxygen isotope record from the northeastern Arabian Sea was used to reconstruct...
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