气候变化领域集成服务门户(CCPortal): Volcanism and climate change as drivers in Holocene depositional dynamic of Laguna del Maule (Andes of central Chile

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DOI	10.5194/cp-16-1097-2020
	Volcanism and climate change as drivers in Holocene depositional dynamic of Laguna del Maule (Andes of central Chile - 36° S)
	Frugone-Alvarez M.; Latorre C.; Barreiro-Lostres F.; Giralt S.; Moreno A.; Polanco-Martinez J.; Maldonado A.; Carrevedo M.L.; Bernárdez P.; Prego R.; Delgado Huertas A.; Fuentealba M.; Valero-Garcés B.
发表日期	2020
ISSN	18149324
起始页码	1097
结束页码	1125
卷号	16 期号:4
英文摘要	Late Quaternary volcanic basins are active landscapes from which detailed archives of past climate and seismic and volcanic activity can be obtained. A multidisciplinary study performed on a transect of sediment cores was used to reconstruct the depositional evolution of the highelevation Laguna del Maule (LdM) (36 S, 2180ma.s.l., Chilean Andes). The recovered 5m composite sediment sequence includes two thick turbidite units (LT1 and LT2) and numerous tephra layers (23 ash and 6 lapilli). We produced an age model based on nine new 14C AMS dates, existing 210Pb and 137Cs data, and the Quizapú ash horizon (1932 CE). According to this age model, the relatively drier Early Holocene was followed by a phase of increased productivity during the mid-Holocene and higher lake levels after 4.0 ka cal BP. Major hydroclimate transitions occurred at ca. 11, 8.0, 4.0 and 0.5 ka cal BP. Decreased summer insolation and winter precipitation due to a southward shift in the southern westerly winds and a strengthened Pacific Subtropical High could explain Early Holocene lower lake levels. Increased biological productivity during the mid- Holocene ( 8:0 to 6.0 ka cal BP) is coeval with a warm-dry phase described for much of southern South America. Periods of higher lake productivity are synchronous to a higher frequency of volcanic events. During the Late Holocene, the tephra layers show compositional changes suggesting a transition from silica-rich to silica-poor magmas at around 4.0 ka cal BP. This transition was synchronous with increased variability of sedimentary facies and geochemical proxies, indicating higher lake levels and increased moisture at LdM after 4.0 ka cal BP, most likely caused by the inception of current El Niño-Southern Oscillation and Pacific Decadal Oscillation (ENSO-PDO) dynamics in central Chile. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	climate change; dating method; El Nino-Southern Oscillation; Holocene; hydrometeorology; Pacific Decadal Oscillation; paleoclimate; precipitation (climatology); sediment core; volcanism; Andes; Chile; Laguna del Maule Volcanic Field; Pacific Ocean; Southern Volcanic Zone
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146702
作者单位	Departamento de Ecología and Centro UC Desierto de Atacama, Pontificia Universidad Católica de Chile, Santiago, Chile; Laboratorio Internacional en Cambio Global, LINCGlobal PUC-CSIC-UFRJ, Santiago, Chile; Instituto de Ecología y Biodiversidad (IEB), Santiago, Chile; Instituto Pirenaico de Ecología (IPE-CSIC), Saragossa, Spain; Institute of Earth Sciences Jaume Almera (ICTJA-CSIC), Barcelona, Spain; DeustoTech - Deusto Institute of Technology, Faculty of Engineering, University of Deusto, Avda. Universidades, 24, Bilbao, Spain; Basque Centre for Climate Change (BC3), Leioa, Spain; Departamento de Biología Marina, Universidad Católica Del Norte, Larrondo 1281, Coquimbo, Chile; Centro de Estudios Avanzados en Zonas Áridas, Universidad de la Serena, La Serena, Chile; Instituto de Investigaciones Marinas (IIM-CSIC), Vigo, Spain; Marine Geosciences and Territorial Planning, Edificio de Ciencias Experimentales, University of Vigo, Vigo, Spain; Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Granada, Spai...
推荐引用方式 GB/T 7714	Frugone-Alvarez M.,Latorre C.,Barreiro-Lostres F.,et al. Volcanism and climate change as drivers in Holocene depositional dynamic of Laguna del Maule (Andes of central Chile - 36° S)[J],2020,16(4).
APA	Frugone-Alvarez M..,Latorre C..,Barreiro-Lostres F..,Giralt S..,Moreno A..,...&Valero-Garcés B..(2020).Volcanism and climate change as drivers in Holocene depositional dynamic of Laguna del Maule (Andes of central Chile - 36° S).Climate of the Past,16(4).
MLA	Frugone-Alvarez M.,et al."Volcanism and climate change as drivers in Holocene depositional dynamic of Laguna del Maule (Andes of central Chile - 36° S)".Climate of the Past 16.4(2020).