A Preliminary Study on Constructing the Bed Sounding Data from DEM

A Preliminary Study on Constructing the Bed Sounding Data from DEM

Wang Yan

College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

American Journal of Geographical Research and Reviews

Accurate riverbed information, including riverbed shape, sounding data and elevation data, is needed to simulate the process of flooding in flooded areas by using two-dimensional hydrodynamic model. DEM data is an important feature reflecting topographic changes and plays an important role in hydrological model analysis.However, in the plain area where DEM elevation changes are very small, the extraction and simulation of river network are of low accuracy in the process of hydrologic analysis, and there are great errors in watershed division. Taking the Mihe river basin, shouguang city, shandong province as the research object, based on WMS to abnormal proofreading is smoothing the center line of the river, get in line with the physical meaning of vector river network, the inversion to the original elevation data (DEM), and on this basis, with the river elevation information center line interpolation, construct a sounding data of river model, provide technical support for the two-dimensional hydrodynamic model.

Keywords: River center line; DEM; Riverbed construction; WMS; Mihe river basin; Abnormal point correction

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How to cite this article:
Wang Yan. A Preliminary Study on Constructing the Bed Sounding Data from DEM. American Journal of Geographical Research and Reviews, 2020; 3:17. DOI:10.28933/ajgrr-2020-04-1005


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