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

Giesche, Alena; Staubwasser, Michael; Petrie, Cameron A.; Hodell, David A.

doi:https://doi.org/10.5194/cp-15-73-2019

Articles | Volume 15, issue 1

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

https://doi.org/10.5194/cp-15-73-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 1

Research article

| Highlight paper

|

15 Jan 2019

Research article | Highlight paper |

| 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, Michael Staubwasser, Cameron A. Petrie, and David A. Hodell

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Final revised paper (published on 15 Jan 2019)
Supplement to the final revised paper
Preprint (discussion started on 03 Sep 2018)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Giesche et al manuscript “Re-examining the 4.2 ka BP event in foraminifer isotope records from the Indus River delta in the Arabian Sea”', Ashish Sinha, 01 Oct 2018
- AC2: 'Response to reviewer 1', Alena Giesche, 02 Dec 2018
AC1: 'Data available', Alena Giesche, 01 Oct 2018
RC2: 'Reviews of Giesche et. al.,2018', Anonymous Referee #2, 10 Oct 2018
- AC3: 'Response to reviewer 2', Alena Giesche, 02 Dec 2018
RC3: 'Comments on Giesche et al. "Re-examining the 4.2 ka BP event..."', Anonymous Referee #3, 23 Oct 2018
- AC4: 'Response to reviewer 3', Alena Giesche, 02 Dec 2018
SC1: 'Comment on Giesche et al. "Re-examining the 4.2 ka BP event in foraminifer isotope records from the Indus River delta in the Arabian Sea"', Liviu Giosan, 02 Nov 2018
- AC5: 'Response to comment', Alena Giesche, 02 Dec 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish as is (07 Dec 2018) by Harvey Weiss

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.