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Abrupt variations in South American monsoon rainfall during the Holocene based on a speleothem record from central-eastern Brazil

2011; Geological Society of America; Volume: 39; Issue: 11 Linguagem: Inglês

10.1130/g32098.1

1943-2682

Nicolás M. Stríkis, Francisco W. Cruz, Hai Cheng, Ivo Karmann, R. Lawrence Edwards, Mathias Vuille, Xianfeng Wang, Paula Mulo, Valdir F. Novello, Augusto S. Auler,

Landslides and related hazards

Research Article| November 01, 2011 Abrupt variations in South American monsoon rainfall during the Holocene based on a speleothem record from central-eastern Brazil Nicolás M. Stríkis; Nicolás M. Stríkis 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Search for other works by this author on: GSW Google Scholar Francisco W. Cruz; Francisco W. Cruz * 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil *E-mail: cbill@usp.br. Search for other works by this author on: GSW Google Scholar Hai Cheng; Hai Cheng 2Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China3Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Search for other works by this author on: GSW Google Scholar Ivo Karmann; Ivo Karmann 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Search for other works by this author on: GSW Google Scholar R. Lawrence Edwards; R. Lawrence Edwards 3Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Search for other works by this author on: GSW Google Scholar Mathias Vuille; Mathias Vuille 4Department of Atmospheric and Environmental Sciences, State University of New York University at Albany, 1400 Washington Avenue, Albany, New York 12222, USA Search for other works by this author on: GSW Google Scholar Xianfeng Wang; Xianfeng Wang 5Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Marcos S. de Paula; Marcos S. de Paula 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Search for other works by this author on: GSW Google Scholar Valdir F. Novello; Valdir F. Novello 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Search for other works by this author on: GSW Google Scholar Augusto S. Auler Augusto S. Auler 6Instituto do Carste, Rua Barcelona, 240/302, Belo Horizonte, Minas Gerais 30360-260, Brazil Search for other works by this author on: GSW Google Scholar Author and Article Information Nicolás M. Stríkis 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Francisco W. Cruz * 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Hai Cheng 2Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China3Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Ivo Karmann 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil R. Lawrence Edwards 3Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Mathias Vuille 4Department of Atmospheric and Environmental Sciences, State University of New York University at Albany, 1400 Washington Avenue, Albany, New York 12222, USA Xianfeng Wang 5Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Marcos S. de Paula 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Valdir F. Novello 1Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, CEP 05508-080 São Paulo-SP, Brazil Augusto S. Auler 6Instituto do Carste, Rua Barcelona, 240/302, Belo Horizonte, Minas Gerais 30360-260, Brazil *E-mail: cbill@usp.br. Publisher: Geological Society of America Received: 21 Jan 2011 Revision Received: 21 Jun 2011 Accepted: 22 Jun 2011 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2011 Geological Society of America Geology (2011) 39 (11): 1075–1078. https://doi.org/10.1130/G32098.1 Article history Received: 21 Jan 2011 Revision Received: 21 Jun 2011 Accepted: 22 Jun 2011 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Nicolás M. Stríkis, Francisco W. Cruz, Hai Cheng, Ivo Karmann, R. Lawrence Edwards, Mathias Vuille, Xianfeng Wang, Marcos S. de Paula, Valdir F. Novello, Augusto S. Auler; Abrupt variations in South American monsoon rainfall during the Holocene based on a speleothem record from central-eastern Brazil. Geology 2011;; 39 (11): 1075–1078. doi: https://doi.org/10.1130/G32098.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Well-dated high-resolution oxygen isotope records of speleothems in central-eastern Brazil spanning from 1.3 to 10.2 kyr B.P. reveal that the occurrence of abrupt variations in monsoon precipitation is not random. They show a striking match with Bond events and a significant pacing at ∼800 yr, a dominant periodicity present in sea surface temperature records from both the North Atlantic and equatorial Pacific Oceans that is possibly related to periods of low solar activity (high 14C based on the atmospheric Δ14C record). The precipitation variations over central-eastern Brazil are broadly antiphased with the Asian and Indian Monsoons during Bond events and show marked differences in duration and structure between the early and late Holocene. Our results suggest that these abrupt multicentennial precipitation events are primarily linked to changes in the North Atlantic meridional overturning circulation (AMOC). Anomalous cross-equatorial flow induced by negative AMOC phases may have modulated not only the monsoon in South America but also affected El Niño−like conditions in the tropical Pacific during the Holocene. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.