Advances in Earth Science ›› 1999, Vol. 14 ›› Issue (2): 177-182. doi: 10.11867/j.issn.1001-8166.1999.02.0177

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ZHENG Jingyun,GE Quansheng,ZNAHG Piyuan   

  1. Institute ofGeography,Chinese Academy ofSciences,Beijing 100101,China
  • Received:1998-05-28 Revised:1998-08-17 Online:1999-04-01 Published:1999-04-01

ZHENG Jingyun,GE Quansheng,ZNAHG Piyuan. ABRUPT CLIMATIC CHANGE:EVIDENCE AND IMPLICATION[J]. Advances in Earth Science, 1999, 14(2): 177-182.

 The abrupt change of climate discoveredwithin recentyearsmainlyoccurredwithin glacial period ortransition period from cold to warm,which were assumed caused by the melting and freezing process of the huge ice sheet,these processes drove the vertical oceanic circulation and resulted the abrupt climate change.However,it has been found that the abrupt events also characterized in Eemain andHolocene more recently,particularly at lowtomid-latitudes,which was supposed as a climatic stable episode.The evidences fromGreenland and France showthere were some abrupt events embedded in Eemain: And the evidences from Chinese Historical writings show there was an abrupt event around 1230 AD,whichwas also identified bythe other proxy data fromChina,includingthe lake sediment fromLake Kunming in Beijing,ice core from Guliya in Tibet Plateau and salt lake sediment from Lake Hetong-chahan and Lake Hammer in Inner Mongolia.Moreover,the abrupt event around 1230 ADwas identified by evidences fromNorthAmerica and Europe. These evidencessuggest that the abrupt climatic event around 1230 AD occurred not only in China but also in Europe and America.The implication for the mentioned results suggests that the climate inHolocene is also unstable and that the instability of the climate for coming century may increase.

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