EVALUATION OF LANDSLIDE DISASTER BY PSEUDO GLOBAL WARMING EXPERIMENT RAINFALL AND SOIL WATER INDEX ON SHINGU RIVER BASIN, WAKAYAMA WITH TYPHOON T1204

Abstract

 Shingu river basin has been damaged with inundation and landslide disasters by frequently occuring rainfalls due to typhoons near Kii peninsula. These damages may become stronger owing to a climate change, thus we need counter-measures to control the damage for the future.
 In this paper, we first try to reproduce the cumulative rainfall distribution of T1204 by WRF focusing on Shingu river basin. Then, we carried out the pseudo global warming experiment. Finally, the potential area of the landslide disaster was investigated using soil water index based on tank model concept and simulated rainfalls. As the result, it was demonstrated that the proposed method can identify the potential landslide area on some level. The paper briefly summarizes these analysis.