The abrupt onset of the modern South Asian Monsoon winds
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/9393 |
Resumo: | The South Asian Monson (SAM) is one of the most intense climatic elements yet its initiation and variations are not well established. Dating the deposits of SAM wind-driven currents in IODP cores from the Maldives yields an age of 12.9 Ma indicating an abrupt SAM onset, over a short period of 300 kyrs. This coincided with the Indian Ocean Oxygen Minimum Zone expansion as revealed by geochemical tracers and the onset of upwelling reflected by the sediment's content of particulate organic matter. A weaker 'proto-monsoon' existed between 12.9 and 25 Ma, as mirrored by the sedimentary signature of dust influx. Abrupt SAM initiation favors a strong influence of climate in addition to the tectonic control, and we propose that the post Miocene Climate Optimum cooling, together with increased continentalization and establishment of the bipolar ocean circulation, i.e. the beginning of the modern world, shifted the monsoon over a threshold towards the modern system. |
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The abrupt onset of the modern South Asian Monsoon windsThe South Asian Monson (SAM) is one of the most intense climatic elements yet its initiation and variations are not well established. Dating the deposits of SAM wind-driven currents in IODP cores from the Maldives yields an age of 12.9 Ma indicating an abrupt SAM onset, over a short period of 300 kyrs. This coincided with the Indian Ocean Oxygen Minimum Zone expansion as revealed by geochemical tracers and the onset of upwelling reflected by the sediment's content of particulate organic matter. A weaker 'proto-monsoon' existed between 12.9 and 25 Ma, as mirrored by the sedimentary signature of dust influx. Abrupt SAM initiation favors a strong influence of climate in addition to the tectonic control, and we propose that the post Miocene Climate Optimum cooling, together with increased continentalization and establishment of the bipolar ocean circulation, i.e. the beginning of the modern world, shifted the monsoon over a threshold towards the modern system.The German Federal Ministry of Education and Research is thanked for funding the seismic surveys (03S0405, 03G0236A).Nature ResearchSapientiaBetzler, ChristianEberli, Gregor P.Kroon, DickWright, James D.Swart, Peter K.Nath, Bejugam NagenderAlvarez-Zarikian, Carlos A.Alonso-Garcia, MontserratBialik, Or M.Blattler, Clara L.Guo, Junhua AdamHaffen, SébastienHorozal, SenayInoue, MayuriJovane, LuigiLanci, LucaLaya, Juan CarlosMee, Anna Ling HuiLuedmann, ThomasNakakuni, MasatoshiNiino, KaoruPetruny, Loren M.Pratiwi, Santi D.Reijmer, John J. G.Reolid, JesusSlagle, Angela L.Sloss, Craig R.Su, XiangYao, ZhengquanYoung, Jeremy R.2017-04-07T15:56:22Z2016-072016-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/9393eng2045-232210.1038/srep29838info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:20:50Zoai:sapientia.ualg.pt:10400.1/9393Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:01:21.119239Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The abrupt onset of the modern South Asian Monsoon winds |
title |
The abrupt onset of the modern South Asian Monsoon winds |
spellingShingle |
The abrupt onset of the modern South Asian Monsoon winds Betzler, Christian |
title_short |
The abrupt onset of the modern South Asian Monsoon winds |
title_full |
The abrupt onset of the modern South Asian Monsoon winds |
title_fullStr |
The abrupt onset of the modern South Asian Monsoon winds |
title_full_unstemmed |
The abrupt onset of the modern South Asian Monsoon winds |
title_sort |
The abrupt onset of the modern South Asian Monsoon winds |
author |
Betzler, Christian |
author_facet |
Betzler, Christian Eberli, Gregor P. Kroon, Dick Wright, James D. Swart, Peter K. Nath, Bejugam Nagender Alvarez-Zarikian, Carlos A. Alonso-Garcia, Montserrat Bialik, Or M. Blattler, Clara L. Guo, Junhua Adam Haffen, Sébastien Horozal, Senay Inoue, Mayuri Jovane, Luigi Lanci, Luca Laya, Juan Carlos Mee, Anna Ling Hui Luedmann, Thomas Nakakuni, Masatoshi Niino, Kaoru Petruny, Loren M. Pratiwi, Santi D. Reijmer, John J. G. Reolid, Jesus Slagle, Angela L. Sloss, Craig R. Su, Xiang Yao, Zhengquan Young, Jeremy R. |
author_role |
author |
author2 |
Eberli, Gregor P. Kroon, Dick Wright, James D. Swart, Peter K. Nath, Bejugam Nagender Alvarez-Zarikian, Carlos A. Alonso-Garcia, Montserrat Bialik, Or M. Blattler, Clara L. Guo, Junhua Adam Haffen, Sébastien Horozal, Senay Inoue, Mayuri Jovane, Luigi Lanci, Luca Laya, Juan Carlos Mee, Anna Ling Hui Luedmann, Thomas Nakakuni, Masatoshi Niino, Kaoru Petruny, Loren M. Pratiwi, Santi D. Reijmer, John J. G. Reolid, Jesus Slagle, Angela L. Sloss, Craig R. Su, Xiang Yao, Zhengquan Young, Jeremy R. |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Betzler, Christian Eberli, Gregor P. Kroon, Dick Wright, James D. Swart, Peter K. Nath, Bejugam Nagender Alvarez-Zarikian, Carlos A. Alonso-Garcia, Montserrat Bialik, Or M. Blattler, Clara L. Guo, Junhua Adam Haffen, Sébastien Horozal, Senay Inoue, Mayuri Jovane, Luigi Lanci, Luca Laya, Juan Carlos Mee, Anna Ling Hui Luedmann, Thomas Nakakuni, Masatoshi Niino, Kaoru Petruny, Loren M. Pratiwi, Santi D. Reijmer, John J. G. Reolid, Jesus Slagle, Angela L. Sloss, Craig R. Su, Xiang Yao, Zhengquan Young, Jeremy R. |
description |
The South Asian Monson (SAM) is one of the most intense climatic elements yet its initiation and variations are not well established. Dating the deposits of SAM wind-driven currents in IODP cores from the Maldives yields an age of 12.9 Ma indicating an abrupt SAM onset, over a short period of 300 kyrs. This coincided with the Indian Ocean Oxygen Minimum Zone expansion as revealed by geochemical tracers and the onset of upwelling reflected by the sediment's content of particulate organic matter. A weaker 'proto-monsoon' existed between 12.9 and 25 Ma, as mirrored by the sedimentary signature of dust influx. Abrupt SAM initiation favors a strong influence of climate in addition to the tectonic control, and we propose that the post Miocene Climate Optimum cooling, together with increased continentalization and establishment of the bipolar ocean circulation, i.e. the beginning of the modern world, shifted the monsoon over a threshold towards the modern system. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07 2016-07-01T00:00:00Z 2017-04-07T15:56:22Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/9393 |
url |
http://hdl.handle.net/10400.1/9393 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2045-2322 10.1038/srep29838 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Nature Research |
publisher.none.fl_str_mv |
Nature Research |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133242621689856 |