A 600-year flood history in the Yangtze River drainage:Comparison between a subaqueous delta and historical records

作     者：WANG MinJie ZHENG HongBo XIE Xin FAN DaiDu YANG ShouYe ZHAO QuanHong WANG Ke 

作者机构：State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China School of Earth Sciences and Engineering Nanjing University Nanjing 210093 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2011年第56卷第2期

页      面：188-195页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 

主　　题：水下三角洲 历史记录 长江洪水 长江流域 细粒矿物 长江中上游 粗粒度 高分辨率 

摘      要：Based on grain size analysis and high-resolution elemental scanning of core YD0901,taken from the subaqueous Yangtze River delta,a 600-year flood history was reconstructed for the Yangtze River drainage ***/Rb ratios were chosen as a proxy for Yangtze River *** resides mainly in the coarse-grained minerals,and Rb is found in the fine-grained *** floods occur,the discharge of the Yangtze River increases,which carries more coarse-grained minerals into the East China ***,deposition of coarse-grained minerals significantly increases relative to fine-grained minerals on the subaqueous delta,and subsequently the Zr/Rb ratios also *** higher the Zr/Rb peaks,the greater number of coarse particles deposited by saltation ***/Rb peaks correlate very well with historical records for Yangtze River *** at about AD 1870,the Zr/Rb ratio reached a maximum value over the last 600 years,which is consistent with the extreme flood event in the upper and middle reaches of the Yangtze River in AD 1870,as indicated in the historical *** show that floods have occurred at a relatively high frequency over the last 600 years,which is consistent with historical records when,during the Ming-Qing Dynasty,floods occurred once every 4 *** addition,spectral analysis of the Zr/Rb ratio showed that there is close link between the Yangtze River floods and ENSO intensity.