American Society of Civil Engineers


Formation and Evolution of the Jiuduansha Shoal over the Past 50 Years


by Xiaoping Xie, (corresponding author), (School of Geography and Tourism, Qufu Normal Univ., Qufu 273165, China E-mail: xp.xie@263.net), Zhaoyin Wang, M.ASCE, (Professor, Dept. of Hydraulic Engineering, Tsinghua Univ., Beijing 100084, China.), and Charles S. Melching, M.ASCE, (Associate Professor, Dept. of Civil and Environmental Engineering, Marquette Univ., P.O. Box 1881, Milwaukee, WI 53201-1881.)

Journal of Hydraulic Engineering, Vol. 135, No. 9, September 2009, pp. 741-754, (doi:  http://dx.doi.org/10.1061/(ASCE)0733-9429(2009)135:9(741))

     Access full text
     Purchase Subscription
     Permissions for Reuse  

Document type: Journal Paper
Abstract: The formation and geomorphic evolution of the Jiuduansha Shoal are investigated over the past 50 years in this paper. The sedimentary processes, formation, and geomorphic evolution of the Jiuduansha Shoal in the Yangtze River Estuary, eastern China, are analyzed based on digitized sea maps from 1945 to 2001, satellite images from 1975 to 2001, and field survey data in the spring-neap tidal cycle in the dry and flood seasons in 2003. The suspended sediment concentration and hydrodynamics of the North Passage and South Passage during the dry and flood seasons in the spring-neap tidal cycle in 2003 were investigated, and relations between the North Passage and South Passage of the Jiuduansha Shoal are analyzed. Results show that seasonal and spring-neap tidal cycle variations in sediment and water discharge from the drainage basin correspond to erosion and deposition on the Jiuduansha Shoal. The results and data can provide useful information for the management of the Yangtze River Estuary and restoration of the estuarine tidal flat ecology.


ASCE Subject Headings:
Estuaries
Geomorphology
Sediment transport
Shoreline changes
Shoaling
China