eprintid: 10194015 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/19/40/15 datestamp: 2024-07-02 09:42:45 lastmod: 2024-07-02 09:42:45 status_changed: 2024-07-02 09:42:45 type: article metadata_visibility: show sword_depositor: 699 creators_name: Kang, Xiaoying creators_name: Yu, Zhaojie creators_name: Song, Lina creators_name: Colin, Christophe creators_name: Wilson, David creators_name: Song, Zehua creators_name: Su, Bai creators_name: Tang, Xiaojie creators_name: Chang, Fengming creators_name: Bassinot, Franck creators_name: Wan, Shiming title: Wind-driven sediment exchange between the Indian marginal seas over the last 18,000 years ispublished: inpress divisions: UCL divisions: B04 divisions: C06 divisions: F57 note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: 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. date: 2024-06-26 date_type: published publisher: IOP Publishing official_url: http://dx.doi.org/10.1088/1748-9326/ad5bf4 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 2291052 doi: 10.1088/1748-9326/ad5bf4 lyricists_name: Wilson, David lyricists_id: DJWIL75 actors_name: Wilson, David actors_id: DJWIL75 actors_role: owner full_text_status: public publication: Environmental Research Letters issn: 1748-9326 citation: Kang, Xiaoying; Yu, Zhaojie; Song, Lina; Colin, Christophe; Wilson, David; Song, Zehua; Su, Bai; ... Wan, Shiming; + view all <#> Kang, Xiaoying; Yu, Zhaojie; Song, Lina; Colin, Christophe; Wilson, David; Song, Zehua; Su, Bai; Tang, Xiaojie; Chang, Fengming; Bassinot, Franck; Wan, Shiming; - view fewer <#> (2024) Wind-driven sediment exchange between the Indian marginal seas over the last 18,000 years. Environmental Research Letters 10.1088/1748-9326/ad5bf4 <https://doi.org/10.1088/1748-9326%2Fad5bf4>. (In press). Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10194015/1/Kang%20et%20al%202024%20ERL%20accepted%20ms%20%2B%20supp.pdf