TY  - INPR
SN  - 1748-9326
UR  - http://dx.doi.org/10.1088/1748-9326/ad5bf4
A1  - Kang, Xiaoying
A1  - Yu, Zhaojie
A1  - Song, Lina
A1  - Colin, Christophe
A1  - Wilson, David
A1  - Song, Zehua
A1  - Su, Bai
A1  - Tang, Xiaojie
A1  - Chang, Fengming
A1  - Bassinot, Franck
A1  - Wan, Shiming
N2  - The Indian Coastal Current is the only channel for material exchange between the two largest marginal seas in the northern Indian Ocean: the Bay of Bengal and the Arabian Sea. However, its past history is poorly known, limiting accurate predictions of its future changes. Here, we present a new clay mineral record from south of India supported by interpretations of model simulations to trace its variability over the last 18,000 years. Decreased smectite/(illite+chlorite) ratios during the cold intervals suggest that a stronger northeasterly wind led to a mean southward flow of the Indian Coastal Current in the Bay of Bengal. In contrast, increased smectite/(illite+chlorite) ratios during the warm intervals suggest the opposite scenario. Combining the proxy record with model simulations, we infer that atmospheric circulation changes were the main driver of the changes. Moreover, a possible link is observed between a positive Indian Ocean Dipole (IOD) and weakened southward flow of the Indian Coastal Current in the Bay of Bengal during the Holocene. These findings imply that future warming scenarios, if associated with more intense positive IOD events as proposed, may lead to a reduction in fresh water transport from the Bay of Bengal to the Arabian Sea.
AV  - public
TI  - Wind-driven sediment exchange between the Indian marginal seas over the last 18,000 years
PB  - IOP Publishing
Y1  - 2024/06/26/
ID  - discovery10194015
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
JF  - Environmental Research Letters
ER  -