Journal
JOURNAL OF ASIAN EARTH SCIENCES
Volume 66, Issue -, Pages 166-174Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jseaes.2013.01.002
Keywords
Yangtze (Changjiang) delta; Shoreline change; Human impacts
Categories
Funding
- National Natural Science Foundation of China [40906024, 41030856, 40976020, 41076022]
- Natural Science Foundation of Shandong [Y2007E14]
Ask authors/readers for more resources
The evolution of the Yangtze delta, where the largest economic zone (e.g. Shanghai) in China is located, directly affects the regional economic development and ecoenvironment. The mean high tide lines as the coastline delineated from multi-temporal remote sensing data of Landsat during 1974-2010 at intervals of about 8 years were used to examine the shoreline progradation and recession of the Yangtze delta in the past four decades. Our results show that significant parts of the shoreline in the Yangtze delta in the past four decades and particularly after the operation of the Three Gorges Reservoir (TGR), the world's largest hydropower project ever built, experienced continual progradation despite a substantial decrease in the Yangtze sediment input. During 1974-2010, the area of the Yangtze subaerial delta increased by 667 km(2) with a net progradation rate of 18.5 km(2)/yr, and the maximum progradation occurred at the eastern parts of Chongming Island and Nanhui bank, where the coastline advanced seaward about 8 and 6 km, respectively, with mean net progradation rates of 0.22 and 0.17 km/yr, respectively. An important (probably dominant) reason for the Yangtze shoreline progradation despite markedly decreased riverine sediment supply is coastal engineering, such as sea reclamation works, filling project, and wharf constructions. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available