Author:WANG Wen-yuan1,2, LIU Jia—qi2, LIU Dongsheng2, PENG Ping—an3,J.Negendank4

(1.Department of geology,Peking University,Beijing 100871,China 2.Institute of geology, Chinese Academy of Sciences,Beijing 100029,China：3.National Laboratory of Organic Geochemistry Guangzhou 510640.China 4.GeoForschungsZentrum .Telegr afenberg A26,O-1561 Potsdam,Germany)

Key words:last deglaciation；the low latitude area; maar lake：palaeo-monsoon

Abstract:

Maar lake Huguangyan is located in Leizhou Peninsula in the South China Sea, where is intersect site of eastern southeast monsoon and southwest monsoon and sensitive to climate change. The concentrations of biogenic silica total organic carbon, total nitrogen and total hydrogen inferred from the sediments of Maar lake Huguangyan provide a climate records with century resolution between 18000 and 10000 years before the present (B.P).The records in detail show many of the rapid climate shifts related to the ice cores record in central Greenland during the last deglaciation and the Bolling warming at the end of last glacial leads that of Greenland, wheres the cooling of the Younger Dryas occurred synchronously in the two regions. The observations fully demonstrate the existence of the two—step shape of the last deglaciation in tropic Asia but also point to a noticeable difference between the low and high latitude in the northern hemisphere Thus, the first warming at the last deglaciation in the low latitude may have preceded that of the high latitude and this result likely suggest that the primarily forcing of north hemisphere climate changes during this period derived from the tropical low latitude.but atmospheric water vapor maybe played an important role.

末次冰消期带湖光岩玛珥湖古季风变化记录