作者
Benedikt Ritter, Volker Wennrich, Alicia Medialdea, Dominik Brill, Georgina King, Sascha Schneiderwind, Karin Niemann, Emma Fernández-Galego, Julia Diederich, Christian Rolf, Roberto Bao, Martin Melles, Tibor J Dunai
发表日期
2019/3/27
期刊
Scientific Reports
卷号
9
期号
1
页码范围
5270
出版商
Nature Publishing Group UK
简介
Paleoclimate records from the Atacama Desert are rare and mostly discontinuous, mainly recording runoff from the Precordillera to the east, rather than local precipitation. Until now, paleoclimate records have not been reported from the hyperarid core of the Atacama Desert (<2 mm/yr). Here we report the results from multi-disciplinary investigation of a 6.2 m drill core retrieved from an endorheic basin within the Coastal Cordillera. The record spans the last 215 ka and indicates that the long-term hyperarid climate in the Central Atacama witnessed small but significant changes in precipitation since the penultimate interglacial. Somewhat ‘wetter’ climate with enhanced erosion and transport of material into the investigated basin, commenced during interglacial times (MIS 7, MIS 5), whereas during glacial times (MIS 6, MIS 4–1) sediment transport into the catchment was reduced or even absent. Pelagic diatom …
引用总数
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