Analysis based on 3DGIS system for channel evolution

Digital Channel has been an imperative need for the channel, yet few literatures about it are presented. This paper proposes a method to block the channel according to the contours and the banks, delete the data of the seabed on the basis of scope of bank and seabed, by using radial basis function to interpolate the data of seabed and adds them to the corresponding blocks. Finally dynamic Delaunay triangulations constrained by seabed edges within updating blocks are obtained.