13. SENSITIVITY ANALYSIS OF DEM RESOLUTIONS ON FLOOD INUNDATION SIMULATIONS IN JAKARTA, INDONESIA

摘要

Jakarta has experienced many floods in the past, and those floods resulted in not only human casualties but also economic damages. The aim of this paper is to check a newly available bathymetry of 5 m resolution from ALOS by using a developed flood inundation model whether this fine resolution DEM can be useful to reproduce a better simulation result in Jakarta. The 5 m resolutions show the river width more detail than 30 and 90 m resolutions but a high building in a target area was not captured well in any DEM. As the result of analysis, it was found that there are no significant differences between simulation results using 90， 30 and 5 m DEM resolutions because these DEMs were obtained from satellite images and show no big differences in accuracy.