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东海内陆架泥质区中全新世环境敏感粒度组分的地质意义
引用本文:徐方建,李安春,万世明,刘建国,王宏娜,周菲凡.东海内陆架泥质区中全新世环境敏感粒度组分的地质意义[J].海洋学报,2009,31(3):95-102.
作者姓名:徐方建  李安春  万世明  刘建国  王宏娜  周菲凡
作者单位:1.中国科学院海洋研究所海洋地质与环境重点实验室,山东青岛,266071;中国科学院研究生院,北京,100049
基金项目:国家自然科学基金项目 
摘    要:尝试恢复了中全新世东亚冬季风表现出的太阳活动以及ENSO周期变化。通过对东海内陆架泥质沉积区EC2005孔进行粒度分析以及AMS碳-14测年,对高分辨率敏感粒度资料揭示的中全新世近700a(距今5.2~5.9ka)东亚冬季风记录与GRIP冰心氧同位素记录的气候变化进行了对比,良好的对应关系说明,东亚冬季风变化与格陵兰冰心揭示的古气候变化有某种内在联系,期间东亚冬季风的增强得到了良好的区域性响应,同时又具有全球性背景。中全新世东亚冬季风具有明显的周期变化,主要表现为62,11a的太阳活动周期以及与现代ENSO周期相似的6,5a周期。东海内陆架EC2005孔泥质沉积物揭示的中全新世东亚冬季风变化与格陵兰冰心氧同位素记录的良好对应说明两者有相似的发生机制,可能是太阳活动以及古ENSO对全球气候系统的影响所致。

关 键 词:ENSO    太阳活动    敏感粒度    中全新世    东海内陆架    东亚冬季风    泥质沉积物
收稿时间:2008/8/27 0:00:00
修稿时间:1/6/2009 12:00:00 AM

The geological significance of environmental sensitive grain-size populations in the mud wedge of the East China Sea during the mid-Holocene
XU Fang-jian,LI An-chun,WAN Shi-ming,LIU Jian-guo,WANG Hong-na and ZHOU Fei-fan.The geological significance of environmental sensitive grain-size populations in the mud wedge of the East China Sea during the mid-Holocene[J].Acta Oceanologica Sinica (in Chinese),2009,31(3):95-102.
Authors:XU Fang-jian  LI An-chun  WAN Shi-ming  LIU Jian-guo  WANG Hong-na and ZHOU Fei-fan
Institution:Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate School, Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate School, Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate School, Chinese Academy of Sciences, Beijing 100049, China;Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Abstract:The correlations between the East Asian winter monsoon(EAWM) changes from solar activity and ENSO periodicities during the mid-Holocene are attempted to rebuild.On the basis of environmental sensitive grain-size population analysis and AMS carbon-14 dating of Core EC2005,located in the mud area in the inner shelf of the East China Sea(ECS) ,a 700 a EAWM evolution between 5.9 and 5.2 ka BP was compared with the GRIP D18O record,the good correlation suggests that inner relationship existsbet ween the EAWM and the climatic changes disclosed by the GRIP icecore.The EAWM strengt hened during the mid-Holocene,which was well in accord with the regional and global climatic changes.The significant periodicities disclosed by power spectral analysis correspond to the solar activity such as the 62 and 11 a periodicities and the modern ENSO 3~8 a periodicity as 6 and 5 a.The ENSO cycles were considered to existduring the mid-Holocene.The periodicities of solar and ENSO activities were revealed by the sedimentary record with high resolution in the mud area of the ECS inner shelf.
Keywords:ENSO
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