Oldest Dryas hydroclimate reorganization in the eastern Iberian Peninsula after the iceberg discharges of Heinrich Event 1
Perez-Mejias, Carlos1; Moreno, Ana2; Bernal-Wormull, Juan2; Cacho, Isabel3; Cinta Osacar, M.4; Lawrence Edwards, R.5; Cheng, Hai1,6,7
通讯作者Perez-Mejias, Carlos(perezmegias@mail.xjtu.edu.cn)
2021-05-01
发表期刊QUATERNARY RESEARCH
ISSN0033-5894
卷号101页码:67-83
摘要This study examines the first precisely dated and temporally highly resolved speleothem record from Iberia that reconstructs the Oldest Dryas (OD). The onset of cold conditions in the study area, contemporary with the beginning of Heinrich Stadial 1, is recorded at 18.13 +/- 0.08 ka, with a pronounced drop of 6.1 parts per thousand in delta C-13 in 250 years. Henceforth, stadial conditions depict a period of instability in the Atlantic Meridional Overturning Circulation, peaking in freshwater input from iceberg melting during Heinrich Event 1. Anomalies in the delta O-18 of the stalagmite attributed to such a freshwater event are found from 16.17 to 15.89 ka. Such absolute dates given to the onset of the OD in Iberia and to the main iceberg discharges are reliable anchor points for non-absolute chronologies. Two periods are identified in the OD: OD-a (18.13-16.17 ka) is characterized by wet conditions and a faster growth rate, and OD-b (15.89-14.81 ka) exhibits relative dryness and a slower growth rate. The sudden release of fresh water is considered to be the reason for the disruption of rainfall patterns in eastern Iberia. The present study also highlights the existence of heterogeneous and complex hydrological conditions during the OD in Iberia when both Atlantic and Mediterranean realms are considered.
关键词Speleothem Deglaciation Heinrich Stadial 1 Oldest Dryas Iberia Western Mediterranean Atlantic Meridional Overturning Circulation
DOI10.1017/qua.2020.112
关键词[WOS]LAST GLACIAL MAXIMUM ; ATLANTIC SURFACE HYDROGRAPHY ; NORTH-ATLANTIC ; CLIMATE VARIABILITY ; ALBORAN SEA ; VEGETATION HISTORY ; SPELEOTHEM RECORD ; HYDROLOGICAL VARIABILITY ; EUROPEAN DEGLACIATION ; REGIONAL CLIMATE
收录类别SCI ; SCI
语种英语
资助项目NSFC[41888101] ; NSF[1702816] ; NSF[CGL2016-77479-R] ; NSF[CTM2016-75411-R] ; Aragon Government[E02_17R] ; Aragon Government[E32_17R] ; Aragon Government[E32_20R] ; Pyrenean Institute of Ecology ; University of Zaragoza
WOS研究方向Physical Geography ; Geology
项目资助者NSFC ; NSF ; Aragon Government ; Pyrenean Institute of Ecology ; University of Zaragoza
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000654147100007
出版者CAMBRIDGE UNIV PRESS
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/16700
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Perez-Mejias, Carlos
作者单位1.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
2.Pyrenean Inst Ecol CSIC, Dept Geoenvironm Proc & Global Change, Avda Montanana 1005, Zaragoza 50059, Spain
3.Univ Barcelona, Dept Dinam Terra & Ocea, C Marti Franques S-N, Barcelona 08028, Spain
4.Univ Zaragoza, Earth Sci Dept, C Pedro Cerbuna 12, Zaragoza 50009, Spain
5.Univ Minnesota, Dept Earth & Environm Sci, 116 Church St SE, Minneapolis, MN 55455 USA
6.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710049, Peoples R China
7.CAGS, Key Lab Karst Dynam, MLR, Inst Karst Geol, Guilin, Peoples R China
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Perez-Mejias, Carlos,Moreno, Ana,Bernal-Wormull, Juan,et al. Oldest Dryas hydroclimate reorganization in the eastern Iberian Peninsula after the iceberg discharges of Heinrich Event 1[J]. QUATERNARY RESEARCH,2021,101:67-83.
APA Perez-Mejias, Carlos.,Moreno, Ana.,Bernal-Wormull, Juan.,Cacho, Isabel.,Cinta Osacar, M..,...&Cheng, Hai.(2021).Oldest Dryas hydroclimate reorganization in the eastern Iberian Peninsula after the iceberg discharges of Heinrich Event 1.QUATERNARY RESEARCH,101,67-83.
MLA Perez-Mejias, Carlos,et al."Oldest Dryas hydroclimate reorganization in the eastern Iberian Peninsula after the iceberg discharges of Heinrich Event 1".QUATERNARY RESEARCH 101(2021):67-83.
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