中国东部海岸带-陆架区晚更新世以来沉积体系演化及高分辨率气候-环境变化的沉积记录

晚更新世-全新世 海岸带-陆架区 沉积体系 气候-环境变化 沉积记录
刘健 2014-01 项目
Integreted analyses of lots of high-resolution shallow seismic profiles and drilling cores obtained in the coastal to shelf areas of the Bohai Sea, Yellow Sea, and East China Sea will be conducted to establish the chronological and sequence stragigraphy. The main objectives of this study are to reveal the temporal and spatial distribution patterns of various sediemntary systems, high-resolution sedimentary evolutional history, and sedimentary records of climatic and environmental changes in the coastal to shelf areas of East China since the Late Pleistocene, and to illustrate the developing process and sedimentary records of the northeastern coast of the Jiangsu coastal plain under interactions of climatic and sea-level fluctuations and sediment supply from the Yellow River and/or the Yangtze River. Based on above researches, a global correlation of the climatic and sea-level changes since the Late Pleistocene will be made. This study is of scientifically significance in probing deeply into regional responses to the global change and the processes and mechanism of sea-land interactions.
依据渤海、黄海和东海海岸带-陆架区和苏北平原东部近岸地区大量高分辨率浅地层剖面和钻孔岩心,利用地球物理方法(高分辨率浅地层剖面的解译)、地质分析方法和环境磁学研究方法的结合,建立高分辨率年代地层和层序地层,揭示晚更新世以来中国东部海岸带-陆架区不同沉积体系的时空分布特征和高分辨率的沉积演化历史与气候-环境变化的沉积记录,阐明末次冰期最盛期以来苏北平原东部近岸地区的发育历史进程及其在气候-海平面变化和黄河/长江改道影响下的高分辨率沉积记录,在此基础上开展晚更新世以来气候-海平面变化的全球对比研究。这对于探索全球变化区域响应及陆海相互作用的过程与机理具有重要的科学意义。