| In order to assess the effects of climate change on flood disasters in urban areas, we applied a twodimensional finite element hydrodynamic model (2D-FEM) to simulate flood processes for the caseanalysis of levee breach caused by Kathleen Typhoon on September 16th, 1947 in Kurihashi reachof Tone River, upstream of Tokyo area. The purpose is to use the model to simulate floodinundation processes under the present topography and land-use conditions with impending extremeflood scenarios due to climate change for mega-urban areas like Tokyo. Simulation used 100 mresolution topographic data (in PWRI), which was derived from original LiDAR (Light Detectionand Ranging) data, and levee breach hydrographic data in 1947. In this paper, we will describe theapplication of the model with calibration approach and techniques when applying for such finespatial resolution in urban environments. The fine unstructured triangular FEM mesh of the modelappeared to be the most capable of introducing of constructions like roads/levees in simulations.Model results can be used to generate flood mapping, subsequently uploaded to Google Earthinterface, making the modeling and presentation process much comprehensible to the general public. |
