Progradation of the Changjiang River delta since the mid-Holocene  

作　　者：HoriKazuaki SaitoYoshiki 赵泉鸿 汪品先 李从先 

出　　处：《Science China Chemistry》2001年第S1期87-91,共5页中国科学（化学英文版）

基　　金：K. H. thanks the JSPS for a research fellowship; This work was supported by the Global Environment Research Fund of the Environment Agency of Japan; in part by a Grant-in-aid from the Scientific Research Project (Grant No. 10-5088) of the Ministry of E

摘　　要：Subaqueous deltaic deposits with approximately 30 radiocarbon ages show that the Changjiang River delta was strongly affected by tides and that the delta progradation rate after 2 kaBP was almost double the rate before 2 kaBP. This change in the progradation rate correlates well with the active extension of the subaerial delta plain shown by previous work. Widespread human activities, such as farming, deforestation, and dike construction, probably resulted in an increase in sediment discharge to the river-mouth area.Subaqueous deltaic deposits with approximately 30 radiocarbon ages show that the Changjiang River delta was strongly affected by tides and that the delta progradation rate after 2 kaBP was almost double the rate before 2 kaBP. This change in the progradation rate correlates well with the active extension of the subaerial delta plain shown by previous work. Widespread human activities, such as farming, deforestation, and dike construction, probably resulted in an increase in sediment discharge to the river-mouth area.

关 键 词：CHANGJIANG YANGTZE sediment discharge delta PROGRADATION AMS radiocarbon DATING human impact. 

分 类 号：P736.4[天文地球—海洋地质]