Environmental record from the mud area on the inner continental shelf of the East China Sea since the mid-Holocene

作     者：LIU Shengfa SHI Xuefa LIU Yanguang WU Yonghua YANG Gang LIU Shengfa 1,2,SHI Xuefa 1,2 ,LIU Yanguang 1,2,WU Yonghua 1,2,YANG Gang 1,2 1 First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China 2 Key Laboratory of Marine Sedimentology and Environmental Geology,State Oceanic Administration,Qingdao 266061,China

作者机构：First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Key Laboratory of Marine Sedimentology and Environmental Geology State OceanicAdministration Qingdao 266061 China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2011年第30卷第4期

页      面：43-52页

核心收录：

学科分类：0710[理学-生物学] 070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 0908[农学-水产] 08[工学] 0707[理学-海洋科学] 0824[工学-船舶与海洋工程] 

基　　金：Coastal Investigation and Research Project of China under contract Nos 908-01-CJ12 and 908-ZC-I-05 Marine Public Welfare Research Project under contract No. 200805063 China Postdoctoral Science Foundation under contract No. 20100481304 

主　　题：Holocene East China Sea mud area major element palaeoclimate East Asia monsoon 

摘      要：Paleoclimate record was revealed in Core MZ01 covering the mid-Holocene in age,located in the mud area of the inner continental shelf of the East China Sea. The ancient environment featured low-energy shallow sea shelf deposition formed mainly by coastal currents. The results show that temporal variation in geochemistry corresponds with the climate changes inferred from historical record. Relatively low MgO/Al 2 O 3,CaO/K 2 O and high Al 2 O 3 /Na 2 O,K 2 O/Na 2 O,MnO/CaO values reflected a warm and humid climate in general,and vice versa. Therefore,these chemical indices could be applied to identify the variation of palaeoclimate in eastern China. The authors reconstructed the history of mid-Holocene climatic variation of the inner continental shelf of the East China Sea. From 8 300 a BP to 4 200 a BP,the climate was moderately warm and humid. From 4 200 a BP to 2 000 a BP,the climate turned cool and dry,and the regional climate frequently fluctuated in alternation of cool-dry periods（3 700 a BP,2 850 a BP and 2 400 a BP） and warm-wet periods（3 250 a BP and 2 650 a BP） . After 2 000 a BP,the climate of the study area gradually turned warm again,while the Little Ice Age,a cold event centered at around 250 a BP was indicated by those geochemical indices as mentioned above.