Abstract

The Qinghai-Tibet Plateau, known as the "Asian Water Tower", provides fresh water resources for about one-third of the world's population, and its own changes are affected by changes in the westerly and monsoons. Predecessors have done many studies on westerly monsoon changes at seasonal, interannual, interdecadal, and orbital scales, but centennial-millennium-scale changes have always been the missing key link in the study of westerly monsoon changes, mainly due to the lack of age control Accurate and clear instructions. The biomarkers in lake sediments that have emerged in recent years provide a new perspective for solving westerly-monsoon changes. This report will systematically introduce the research progress of suborbital-scale westerly-monsoon changes in recent years from the links of lake sediment dating, index verification, and record reconstruction on the Qinghai-Tibet Plateau.

Presenter Profile

Hou Juzhi, PhD, researcher. He received a bachelor's degree from China University of Geosciences (Wuhan) in 1998, and a Ph.D. from the Institute of Geology and Geophysics of the Chinese Academy of Sciences and Brown University in 2003 and 2008 respectively. After that, he did postdoctoral research at the California Institute of Technology and the University of Washington. At the end of 2009, he was selected into the "Hundred Talents Program" of the Chinese Academy of Sciences and joined the Qinghai-Tibet Plateau Research Institute. He is currently the deputy director of the AlpineEco Laboratory of the Chinese Academy of Sciences, the deputy editor of Quaternary Science Advances, and the editorial board of Quaternary International, Journal of Earth Science and other international journals. He has long been engaged in the study of lakes and paleoenvironment on the Qinghai-Tibet Plateau, mainly using biomolecular markers to quantitatively reconstruct temperature, precipitation isotope, lake ecosystem changes, etc., and published more than 50 SCI papers in Quaternary Science Reviews, Geochimica et Cosmochimica Acta, Geophysical Research Letters, etc..