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Anomalous widespread arid events in Asia over the past 550,000 years

2023Journal article Open Access
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dc.contributor.authorCarrasqueira, Igor Gustavo da Fonseca
dc.contributor.authorJovane, Luigi
dc.contributor.authorDroxler, André W
dc.contributor.authorAlvarez Zarikian, Carlos A
dc.contributor.authorLanci, Luca
dc.contributor.authorAlonso-Garcia, Montserrat
dc.contributor.authorLaya, Juan Carlos
dc.contributor.authorKroon, Dick
dc.date.accessioned2023-10-26T13:39:40Z
dc.date.available2023-10-26T13:39:40Z
dc.date.issued2023
dc.description.abstractRecords 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.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1093/pnasnexus/pgad175pt_PT
dc.identifier.eissn2752-6542
dc.identifier.urihttp://hdl.handle.net/10400.1/20097
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherOxford university presspt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectIndian Summer Monsoonpt_PT
dc.subjectMillennial-scale eventspt_PT
dc.subjectArid conditions in Asiapt_PT
dc.subjectPaleoclimateX-ray fluorescencept_PT
dc.titleAnomalous widespread arid events in Asia over the past 550,000 yearspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage9pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titlePNAS Nexuspt_PT
oaire.citation.volume2pt_PT
person.familyNameAlonso-Garcia
person.givenNameMontserrat
person.identifier.ciencia-id5B1B-33EE-50B9
person.identifier.orcid0000-0002-0241-2178
person.identifier.scopus-author-id51565655800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication7772f374-a9c2-41e7-a798-4d811b8a9a48
relation.isAuthorOfPublication.latestForDiscovery7772f374-a9c2-41e7-a798-4d811b8a9a48

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