Abstract
By utilizing the data of five nautical charts of the South Branch of Changjiang estuary from 1900 to 2001, an underwater Digital Elevation Model of the South Branch of Changjiang estuary for a century is established, on the basis of the model, calculation and analysis were carried on about the evolution characteristics. The results showed that: (1) From 1900 to 2001, the South Branch Channel showed micro erosion , the scour and silting conditions were different in different periods. (2) The scour and silting evolution of the South Branch Channel is mainly in the form of the scour and silting changes of five channels and five shaping sand bodies, the maximum depth of every channel and the total area and total volume of the shaping sand bodies were all in an increasing trend. (3) The main cross sections of the South Branch Channel were mostly the compound channels, the main channel was in the South, and the maximum depth was increasing continuously. The changes in the cross sections which were located at the entrance and exit of the South Branch Channel are rapid than those changes in the middle cross sections. (4) The evolution of the South Branch Channel is the result of the interaction of the natural evolution and artificial control.
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© 2011 Springer-Verlag Berlin Heidelberg
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Hongbing, H., Yulan, Z. (2011). Analysis of the Evolutional Characteristics for a Century of South Branch of Changjiang Estuary Supported by GIS. In: Jiang, L. (eds) Proceedings of the 2011 International Conference on Informatics, Cybernetics, and Computer Engineering (ICCE2011) November 19–20, 2011, Melbourne, Australia. Advances in Intelligent and Soft Computing, vol 112. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25194-8_40
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DOI: https://doi.org/10.1007/978-3-642-25194-8_40
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-25193-1
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