Bridging the knowledge gap on the evolution of the Asian monsoon during 26–16 Ma  

作　　者：Gan Xie Jin-Feng Li Shi-Qi Wang Yi-Feng Yao Bin Sun David K.Ferguson Cheng-Sen Li Tao Deng Xiao-Dong Liu Yu-Fei Wang 

机构地区：[1]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [2]Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044,China [3]State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China [4]Center for Excellence in Tibetan Plateau Earth Sciences,Chinese Academy of Sciences,Beijing 100101,China [5]Department of Paleontology,University of Vienna,1090 Vienna,Austria [6]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《The Innovation》2021年第2期23-28,共6页创新（英文）

基　　金：The authors thank Prof.Chun-Ju Huang from the China University of Geosciences(Wuhan)for a useful discussion.This research was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(no.XDB26000000);the China National Key Basic Research Program(2014CB954201);the National Natural Science Foundation of China(nos.31570223,41690115,and 32000174);the State Key Laboratory of Systematic and Evolutionary Botany(nos.LSEB2019-1 and LSEB2019-4);and the Chinese Academy of Sciences President’s International Fellowship Initiative(2018VBA0016).

摘　　要：The evolution of the Asian monsoon from the Late Oligocene to the Early Miocene is poorly understood.Here,we first reconstruct the precipitation data of central Tibet during 26–16 million years ago(Ma),applying the coexistence approach to sedimentary pollen data,and detect an intensified Asian monsoon with1.35 Ma and0.33 Ma cycles.Paleoclimate modeling is used to show the importance of paleogeographic location in the development of the paleomonsoon.In addition,the results of spectral analysis suggest that the fluctuations in the Asian monsoon during 26–16 Ma can be attributed to the long-period cyclicities in obliquity(1.2 Ma).These findings provide climate data that can be used to understand the Asian monsoon evolution during the Late Oligocene to Early Miocene and highlight the effects of paleogeographic patterns and long-period orbital forcings on the tectonic-scale evolution of the Asian monsoon.

关 键 词：central Tibetan Plateau Lunpola Basin PRECIPITATION Asian monsoon Oligocene to Miocene climate change 

分 类 号：P53[天文地球—古生物学与地层学]