The variations in the East Asian summer monsoon over the past 3 kyrs and the controlling factors.

ABSTRACT: The mechanisms driving the variations in the centennial-scale East Asian summer monsoon (EASM) remain unclear. Here, we use the δ¹⁸O records from adult ostracode shells to reconstruct the EASM variations over the last 3 kyrs in southwestern Japan. A common variation with a 200 yr periodicity among the Asian monsoonal regions was recognized between BC 800 and BC 100. Since then, neither a correlation between the EASM variation and solar activity or a common EASM variation through EASM regions has been identified. The evidence reveals that solar activity dominantly affected the centennial-scale EASM variations throughout Asian monsoonal regions until BC 100. Furthermore, factors other than solar activity that varied and differed in specific regions controlled the EASM intensity du

SUBMITTER: Yamada K 

PROVIDER: S-EPMC6430807 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature