Youger Dryas and Heinrich events recorded by magnetic susceptibility of sediments from the central temperature area of Western Pacific Warm Pool

查看全文 作　　者：TANG Xianzan, CHEN Zhong,YAN Wen & CHEN Muhong The Open Laboratory of Geology and Paleoenvironment of Marginal Sea, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

出　　处：《Chinese Science Bulletin》索引2003年第48卷第8期,共6页

基　　金：This work was supported by the Knowledge Innovation Project of the Chinese Academy of Sciences(Grant Nos.KZCX3-SW-220 and KZCX2-209);the National Natural Science Foundation of China(Grnat No.40076018);the National Key Basic Research Project(Grant No.G2000078502). 摘　　要：Three short geomagnetic excursions, the Go thenburg, Mono Lake and Mungo (or Maelifell) in the Brunhes Positive Polarity period, were revealed based on the studies of magnetostratigraphy, susceptibility (c) and d 18O of sediments in core WP 92-5 from the central temperature area of the Western Pacific Warm Pool (WPWP), and the ages of them are 12.111.3 kaBP, 25.024.0 kaBP, and 31.028.0 kaBP respectively. Furthermore, the Younger Dryas (YD) and Heinrich (H) cold events were also discov- ered in this core by the susceptibility record. The YD cold event occurred at the depth of 3022 cm with an age of 11.510.6 kaBP; H1, H2 and H3 cold events occurred at depths of 5139 cm, 10891 cm and 140126 cm with ages of 15.113.0 kaBP, 25.022.1 kaBP and 30.628.2 kaBP respectively, which well correspond to the H1, H2, H3 events recorded by susceptibility of core SU90-09 from middle At- lantic, indicating that the susceptibility change of marine sediments can be an important sign of climatic frequent fluc- tuations. 关键词：磁化率沉积物西太平洋磁性地层学

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Youger Dryas and Heinrich events recorded by magnetic susceptibility of sediments from the central temperature area of Western Pacific Warm Pool

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