East Asian Monsoon Pattern and Cause of Rapid Climate Fluctuations During the Last Glacial

Key words: 
• last glacial /
• East Asian monsoon /
• the rapid climate fluctuations /
• DansgaardOescher events /
• Heinrich events

Abstract: Comparing the records of two loess profiles, which are located in mideast and west margin of the East Asian Monsoon region, it is found that these records not only captured 20 DansgaardOescher events and 6 Heinrich events, but also were basically synchronous with those of GRIP ice core in the rapid climate fluctuations. And it also suggested that the climate in the East Asian Monsoon region had rapid fluctuations in millennium to century scales in the whole last glacial. But there were still some differences between Shagou Profile in west and Wangguan Profile in east, that is the former were more sensitive to climate change than the latter. With those previous studies of Chinese loess records in the last glacial, it is revealed that the magnitude of DansgaardOeschger cycle decreased gradually from west to east and we suggested it was the effect of westerly and the summer monsoon combination.