作者: B. Hong , Y.T. Hong , Q.H. Lin , Yasuyuki Shibata , Masao Uchida
DOI: 10.1016/J.PALAEO.2010.08.004
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摘要: Abstract Significant changes in the global atmospheric and oceanic circulation system occurred during Younger Dryas cold period. Several researchers have demonstrated a weakening of intensity Indian Ocean Summer Monsoon that However, exact characteristics East Asian still remain vague. Here we present late-glacial precipitation proxy record Monsoon, based on peat cellulose δ 13 C found Hani, Northeast China. Both pollen from Lake Sihailongwan sediment indicate an abrupt increase region These results support occurrence wet conditions north dry south Chinese Mainland By examining activity interannual timescale, propose theory for anomalous distribution attribute to El Nino-like phenomenon Equatorial Pacific Dryas. In this case, Western subtropical high may strengthen, its position over western move northward. This could cause enhancement migration monsoonal rainbelt towards northern mainland, resulting south. Therefore, rainfall should be considered strengthening anti-phase with monsoon weakened same agrees previously revealed variations two monsoons ice-rafted debris events North Atlantic Ocean. It appears that, relation temperature drop Northern Hemisphere centennial millennial time scales, summer occurred.