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晚第四纪低纬太平洋的古海洋研究有助于了解热带海洋本身是否具有与北半球高纬气候不同的变化特征.及在调控全球气候中可能扮演的角色.报告了氧同位素第14阶(~550ka)的东亚黄土剖面与南海、西太平洋暖池区岩心中所显示的异常温暖潮湿事件的一些研究进展.研究利用取自南海与东赤道太平洋的高解析度岩心纪录(MD972142与ODP Site1240),进行了岩心浮游有孔虫化石群聚分析与海表温盐度重建,并推估低纬度太平洋在晚第四纪的温盐梯度变化.推论于氧同位素第14阶,南北半球间的气候非对称性逐渐增加,可能导致低纬东太平洋与西太平洋/东亚间呈现不同的气候型态:东太平洋海表温度呈现冰期降温(~2℃),而西太平洋/东亚则异常高温潮湿-此现象类似于现今太平洋常见的拉尼娜(La Nina)事件. “,”Recent progresses of late Quaternary low-latitude Pacific paleoceanography have advanced our understanding on how the tropical ocean has coupled or isolated with Northern Hemisphere high-latitude climate and how the tropics has played a role in modulating global climate. In this paper, we provide a progress report on climate reconstruction of Marine Isotope Stage (MIS) 14 (equivalent to -550 ka) that is characterized by abnormally warm and/or humid conditions in the East Asia and western Pacific as revealed by a variety of evidence from loess-soil profiles at Chinese Loess Plateau, and marine cores from the South China Sea (SCS) and western Pacific warm pool. We present in this study recent results based on high-resolution / high-quality marine cores retrieved from the SCS and eastern equatorial Pacific (EEP) and hydrographic reconstructions by planktic foraminifer fauna assemblages and sea surface temperature (SST) / salinity estimates. By the reconstruction, we are able to assess the changes in the gradients of hydrographics of the SCS and the low-latitude Pacific in the late Quaternary. We propose that an enhanced asymmetry between the Northern and Southern Hemispheres may have resulted in the climate patterns of the basin-wide Pacific during MIS 14-a significant cooling in the surface ocean of the eastern Pacific during glacial, and warming and more humid in the East Asia and western Pacific, that is analogous to La Nina occurring on modern climate time scale.