Abrupt climate changes during Termination III in Southern Europe

The Late Quaternary glacial-interglacial transitions represent the highest amplitude climate changes over the last million years. Unraveling the sequence of events and feedbacks at Termination III (T-III), including potential abrupt climate reversals similar to those of the last Termination, has bee...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences
Main Authors: Perez-Mejias, Carlos, Moreno, Ana, Sancho, Carlos, Bartolome, Miguel, Stoll, Heather, Cacho, Isabel, Cheng, Hai, Edwards, R. Lawrence, Carlos Pérez-Mejías
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Terminations
Stalagmite
Stadial Event
Stable Isotopes
Iberian Peninsula
Science & Technology
NORTH-ATLANTIC REGION
ICE-AGE TERMINATIONS
IBERIAN MARGIN
MULTI-PROXY
GLACIAL TERMINATIONS
SEA-LEVEL
VARIABILITY
TERRESTRIAL
MARINE
SCALE
Science & Technology - Other Topics
Multidisciplinary Sciences
North Atlantic
Online Access:http://ir.ieecas.cn/handle/361006/5254
https://doi.org/10.1073/pnas.1619615114
Description
Summary:The Late Quaternary glacial-interglacial transitions represent the highest amplitude climate changes over the last million years. Unraveling the sequence of events and feedbacks at Termination III (T-III), including potential abrupt climate reversals similar to those of the last Termination, has been particularly challenging due to the scarcity of well-dated records worldwide. Here, we present speleothem data from southern Europe covering the interval from 262.7 to 217.9 kyBP, including the transition from marine isotope stage (MIS) 8 to MIS 7e. High-resolution delta C-13, delta O-18, and Mg/Ca profiles reveal major millennial-scale changes in aridity manifested in changing water availability and vegetation productivity. uranium-thorium dates provide a solid chronology for two millennial-scale events (S8.1 and S8.2) which, compared with the last two terminations, has some common features with Heinrich 1 and Heinrich 2 in Termination I (T-I).

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