Comparision of Climate Changes between Northern and Southern South China Sea during the Mid-Pleistocene Climate Transition Period

详细信息   

• 责任者：Jin Haiyan (State Key Laboratory of Marine Geology ; Tongji University ; Shanghai 200092 ; China) ; Jian Zhimin
• 刊名：Quaternary Sciences
• 出版年：2008
• 卷期：28(3)
• 关键词：中更新世 ; Middle Pleistocene ; 古气候 ; paleoclimate ; 南海 ; South China Sea
• 页码：p.381-390
• 图表：8 illus., 1 table, 34 refs.
• 分类号：1400
• issnNo：ISSN1001-7410
• isbnNo：CN11-2708/P

摘要

///A total of 506 samples of the Site 1144, which was recovered during the Ocean Drilling Program (ODP) Leg 184 in the South China Sea (SCS), was used in this study to investigate paleoceanographic changes during the past 0.4~1.4 Ma. By measuring stable oxygen and carbon isotopes on shells of planktonic foraminifera at the Site 1144 and comparing the results with the data from ODP Site 1143 in the southern SCS and ODP Site 807 at the central Pacific Warm Pool, the authors found out that the stable isotopes and their differences reflected the mid-Pleistocene transition (MPT) event and showed a more obvious 100ka periodicity after 0.9 Ma. Furthermore, before 0.9 Ma, paleoeeanographic records in the northern and southern SCS and the western Pacific Warm Pool (WPWP) showed distinctive precession- and semi-precession signals, which implied the typical tropical characteristics in the two areas during the MPT period.