Anomalous widespread arid events in Asia over the past 550,000 years
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/10400.1/20097 |
Resumo: | Records of element ratios obtained from the Maldives Inner Sea sediments provide a detailed view on how the Indian Monsoon System has varied at high-resolution time scales. Here, we present records from International Ocean Discovery Program (IODP) Site U1471 based on a refined chronology through the past 550,000 years. The record's high resolution and a proper approach to set the chronology allowed us to reconstruct changes in the Indian Monsoon System on a scale of anomalies and to verify their relationships with established records from the East Asian Monsoon System. On the basis of Fe/sum and Fe/Si records, it can be demonstrated that the Asia continental aridity tracks sea-level changes, while the intensity of winter monsoon winds responds to changes in Northern Hemisphere summer insolation. Furthermore, the anomalies of continental aridity and intensity of winter monsoon winds at millennial-scale events exhibit power in the precession band, nearly in antiphase with Northern Hemisphere summer insolation. These observations indicate that the insolation drove the anomalies in the Indian Summer Monsoon. The good correspondence between our record and the East Asian monsoon anomaly records suggests the occurrence of anomalous widespread arid events in Asia. |
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Anomalous widespread arid events in Asia over the past 550,000 yearsIndian Summer MonsoonMillennial-scale eventsArid conditions in AsiaPaleoclimateX-ray fluorescenceRecords of element ratios obtained from the Maldives Inner Sea sediments provide a detailed view on how the Indian Monsoon System has varied at high-resolution time scales. Here, we present records from International Ocean Discovery Program (IODP) Site U1471 based on a refined chronology through the past 550,000 years. The record's high resolution and a proper approach to set the chronology allowed us to reconstruct changes in the Indian Monsoon System on a scale of anomalies and to verify their relationships with established records from the East Asian Monsoon System. On the basis of Fe/sum and Fe/Si records, it can be demonstrated that the Asia continental aridity tracks sea-level changes, while the intensity of winter monsoon winds responds to changes in Northern Hemisphere summer insolation. Furthermore, the anomalies of continental aridity and intensity of winter monsoon winds at millennial-scale events exhibit power in the precession band, nearly in antiphase with Northern Hemisphere summer insolation. These observations indicate that the insolation drove the anomalies in the Indian Summer Monsoon. The good correspondence between our record and the East Asian monsoon anomaly records suggests the occurrence of anomalous widespread arid events in Asia.Oxford university pressSapientiaCarrasqueira, Igor Gustavo da FonsecaJovane, LuigiDroxler, André WAlvarez Zarikian, Carlos ALanci, LucaAlonso-Garcia, MontserratLaya, Juan CarlosKroon, Dick2023-10-26T13:39:40Z20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/20097eng10.1093/pnasnexus/pgad1752752-6542info: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:RCAAP2023-11-01T02:00:37Zoai:sapientia.ualg.pt:10400.1/20097Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:26:15.556700Repositório 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 |
Anomalous widespread arid events in Asia over the past 550,000 years |
title |
Anomalous widespread arid events in Asia over the past 550,000 years |
spellingShingle |
Anomalous widespread arid events in Asia over the past 550,000 years Carrasqueira, Igor Gustavo da Fonseca Indian Summer Monsoon Millennial-scale events Arid conditions in Asia PaleoclimateX-ray fluorescence |
title_short |
Anomalous widespread arid events in Asia over the past 550,000 years |
title_full |
Anomalous widespread arid events in Asia over the past 550,000 years |
title_fullStr |
Anomalous widespread arid events in Asia over the past 550,000 years |
title_full_unstemmed |
Anomalous widespread arid events in Asia over the past 550,000 years |
title_sort |
Anomalous widespread arid events in Asia over the past 550,000 years |
author |
Carrasqueira, Igor Gustavo da Fonseca |
author_facet |
Carrasqueira, Igor Gustavo da Fonseca Jovane, Luigi Droxler, André W Alvarez Zarikian, Carlos A Lanci, Luca Alonso-Garcia, Montserrat Laya, Juan Carlos Kroon, Dick |
author_role |
author |
author2 |
Jovane, Luigi Droxler, André W Alvarez Zarikian, Carlos A Lanci, Luca Alonso-Garcia, Montserrat Laya, Juan Carlos Kroon, Dick |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Carrasqueira, Igor Gustavo da Fonseca Jovane, Luigi Droxler, André W Alvarez Zarikian, Carlos A Lanci, Luca Alonso-Garcia, Montserrat Laya, Juan Carlos Kroon, Dick |
dc.subject.por.fl_str_mv |
Indian Summer Monsoon Millennial-scale events Arid conditions in Asia PaleoclimateX-ray fluorescence |
topic |
Indian Summer Monsoon Millennial-scale events Arid conditions in Asia PaleoclimateX-ray fluorescence |
description |
Records of element ratios obtained from the Maldives Inner Sea sediments provide a detailed view on how the Indian Monsoon System has varied at high-resolution time scales. Here, we present records from International Ocean Discovery Program (IODP) Site U1471 based on a refined chronology through the past 550,000 years. The record's high resolution and a proper approach to set the chronology allowed us to reconstruct changes in the Indian Monsoon System on a scale of anomalies and to verify their relationships with established records from the East Asian Monsoon System. On the basis of Fe/sum and Fe/Si records, it can be demonstrated that the Asia continental aridity tracks sea-level changes, while the intensity of winter monsoon winds responds to changes in Northern Hemisphere summer insolation. Furthermore, the anomalies of continental aridity and intensity of winter monsoon winds at millennial-scale events exhibit power in the precession band, nearly in antiphase with Northern Hemisphere summer insolation. These observations indicate that the insolation drove the anomalies in the Indian Summer Monsoon. The good correspondence between our record and the East Asian monsoon anomaly records suggests the occurrence of anomalous widespread arid events in Asia. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-10-26T13:39:40Z 2023 2023-01-01T00:00:00Z |
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/10400.1/20097 |
url |
http://hdl.handle.net/10400.1/20097 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1093/pnasnexus/pgad175 2752-6542 |
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 |
Oxford university press |
publisher.none.fl_str_mv |
Oxford university press |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799134144639270912 |