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

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dc.citation.articleNumberpgad175
dc.citation.issueNumber6
dc.citation.journalTitlePNAS Nexus
dc.citation.volumeNumber2
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.accessioned2024-05-03T15:51:13Z
dc.date.available2024-05-03T15:51:13Z
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.
dc.identifier.citationCarrasqueira, I. G. da F., Jovane, L., Droxler, A. W., Alvarez Zarikian, C. A., Lanci, L., Alonso-Garcia, M., Laya, J. C., & Kroon, D. (2023). Anomalous widespread arid events in Asia over the past 550,000 years. PNAS Nexus, 2(6), pgad175. https://doi.org/10.1093/pnasnexus/pgad175
dc.identifier.digitalpgad175
dc.identifier.doihttps://doi.org/10.1093/pnasnexus/pgad175
dc.identifier.urihttps://hdl.handle.net/1911/115576
dc.language.isoeng
dc.publisherOxford University Press
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleAnomalous widespread arid events in Asia over the past 550,000 years
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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