East Gobi megalake systems reveal East Asian Monsoon dynamics over the last interglacial-glacial cycle

Hongwei Li, Xiaoping Yang (), Louis Anthony Scuderi, Fangen Hu, Peng Liang, Qida Jiang, Jan-Pieter Buylaert, Xulong Wang, Jinhua Du, Shugang Kang, Zhibang Ma, Lisheng Wang and Xuefeng Wang
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Hongwei Li: Zhejiang University
Xiaoping Yang: Zhejiang University
Louis Anthony Scuderi: University of New Mexico
Fangen Hu: Yichun University
Peng Liang: Zhejiang University
Qida Jiang: Chinese Academy of Sciences
Jan-Pieter Buylaert: Technical University of Denmark, DTU-Risø Campus
Xulong Wang: Chinese Academy of Sciences
Jinhua Du: Chang’an University
Shugang Kang: Chinese Academy of Sciences
Zhibang Ma: Chinese Academy of Sciences
Lisheng Wang: Chinese Academy of Sciences
Xuefeng Wang: Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-17

Abstract: Abstract Intense debate persists about the timing and magnitude of the wet phases in the East Asia deserts since the late Pleistocene. Here we show reconstructions of the paleohydrology of the East Gobi Desert since the last interglacial using satellite images and digital elevation models (DEM) combined with detailed section analyses. Paleolakes with a total area of 15,500 km2 during Marine Isotope Stage 5 (MIS 5) were identified. This expanded lake system was likely coupled to an 800–1000 km northward expansion of the humid region in East China, associated with much warmer winters. Humid climate across the Gobi Desert during MIS 5 likely resulted in a dustier MIS 4 over East Asia and the North Pacific. A second wet period characterized by an expanded, albeit smaller, lake area is dated to the mid-Holocene. Our results suggest that the East Asian Summer Monsoon (EASM) might have been much weaker during MIS 3.

Date: 2023
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DOI: 10.1038/s41467-023-37859-1

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