An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge
Among various climate drivers, direct evidence for the Intertropical Convergence Zone (ITCZ) control of sediment supply on the millennial scale is lacking, and the changes in ITCZ migration demonstrated in paleoclimate records need to be better investigated. Here, we use clay minerals and Sr–Nd isot...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00061599 2023-05-15T17:34:52+02:00 An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge Xu, Xudong Liu, Jianguo Huang, Yun Zhang, Lanlan Yi, Liang Liu, Shengfa Yang, Yiping Cao, Li Tan, Long 2022-06 electronic https://doi.org/10.5194/cp-18-1369-2022 https://noa.gwlb.de/receive/cop_mods_00061599 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061041/cp-18-1369-2022.pdf https://cp.copernicus.org/articles/18/1369/2022/cp-18-1369-2022.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-18-1369-2022 https://noa.gwlb.de/receive/cop_mods_00061599 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061041/cp-18-1369-2022.pdf https://cp.copernicus.org/articles/18/1369/2022/cp-18-1369-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/cp-18-1369-2022 2022-06-26T23:11:40Z Among various climate drivers, direct evidence for the Intertropical Convergence Zone (ITCZ) control of sediment supply on the millennial scale is lacking, and the changes in ITCZ migration demonstrated in paleoclimate records need to be better investigated. Here, we use clay minerals and Sr–Nd isotopes obtained from a gravity core on the Ninetyeast Ridge to track the corresponding source variations and analyze the relationship between terrestrial material supply and climatic changes. On the glacial–interglacial scale, chemical weathering weakened during the North Atlantic cold-climate periods and falling sea level hindered the transport of smectite into the study area due to the exposure of Andaman and Nicobar Islands. However, the influence of the South Asian monsoon on the sediment supply was not obvious on the millennial scale. We suggest that the north–south migration of the ITCZ controlled the rainfall in Myanmar and further directly determined the supply of clay minerals on the millennium scale because the transport of smectite was highly connected with the ITCZ location; thus, the regional shift of the ITCZ induced an abnormal increase in the smectite percentage during the late Last Glacial Maximum (LGM) in our records. The smectite percentage in the studied core is similar to distinct ITCZ records but different in some periods, revealing that regional changes in the ITCZ were significantly obvious, the ITCZ is not a simple north–south displacement, and closer connections occurred between the Northern–Southern Hemisphere in the eastern Indian Ocean during the late LGM. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA Indian Climate of the Past 18 6 1369 1384 |
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article Verlagsveröffentlichung Xu, Xudong Liu, Jianguo Huang, Yun Zhang, Lanlan Yi, Liang Liu, Shengfa Yang, Yiping Cao, Li Tan, Long An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge |
topic_facet |
article Verlagsveröffentlichung |
description |
Among various climate drivers, direct evidence for the Intertropical Convergence Zone (ITCZ) control of sediment supply on the millennial scale is lacking, and the changes in ITCZ migration demonstrated in paleoclimate records need to be better investigated. Here, we use clay minerals and Sr–Nd isotopes obtained from a gravity core on the Ninetyeast Ridge to track the corresponding source variations and analyze the relationship between terrestrial material supply and climatic changes. On the glacial–interglacial scale, chemical weathering weakened during the North Atlantic cold-climate periods and falling sea level hindered the transport of smectite into the study area due to the exposure of Andaman and Nicobar Islands. However, the influence of the South Asian monsoon on the sediment supply was not obvious on the millennial scale. We suggest that the north–south migration of the ITCZ controlled the rainfall in Myanmar and further directly determined the supply of clay minerals on the millennium scale because the transport of smectite was highly connected with the ITCZ location; thus, the regional shift of the ITCZ induced an abnormal increase in the smectite percentage during the late Last Glacial Maximum (LGM) in our records. The smectite percentage in the studied core is similar to distinct ITCZ records but different in some periods, revealing that regional changes in the ITCZ were significantly obvious, the ITCZ is not a simple north–south displacement, and closer connections occurred between the Northern–Southern Hemisphere in the eastern Indian Ocean during the late LGM. |
format |
Article in Journal/Newspaper |
author |
Xu, Xudong Liu, Jianguo Huang, Yun Zhang, Lanlan Yi, Liang Liu, Shengfa Yang, Yiping Cao, Li Tan, Long |
author_facet |
Xu, Xudong Liu, Jianguo Huang, Yun Zhang, Lanlan Yi, Liang Liu, Shengfa Yang, Yiping Cao, Li Tan, Long |
author_sort |
Xu, Xudong |
title |
An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge |
title_short |
An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge |
title_full |
An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge |
title_fullStr |
An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge |
title_full_unstemmed |
An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge |
title_sort |
intertropical convergence zone shift controlled the terrestrial material supply on the ninetyeast ridge |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/cp-18-1369-2022 https://noa.gwlb.de/receive/cop_mods_00061599 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061041/cp-18-1369-2022.pdf https://cp.copernicus.org/articles/18/1369/2022/cp-18-1369-2022.pdf |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-18-1369-2022 https://noa.gwlb.de/receive/cop_mods_00061599 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061041/cp-18-1369-2022.pdf https://cp.copernicus.org/articles/18/1369/2022/cp-18-1369-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-18-1369-2022 |
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Climate of the Past |
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18 |
container_issue |
6 |
container_start_page |
1369 |
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1384 |
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1766133832761737216 |