Japan Geoscience Union Meeting 2016

Presentation information

International Session (Poster)

Symbol H (Human Geosciences) » H-TT Technology & Techniques

[H-TT09] Geographic Information Systems and Cartography

Sun. May 22, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Takashi Oguchi(Center for Spatial Information Science, The University of Tokyo), Yuji Murayama(Graduate School of Life and Environmental Sciences), Masatoshi Arikawa(Center for Spatial Information Science, The University of Tokyo)

5:15 PM - 6:30 PM

[HTT09-P05] Spatio-temporal analysis of disaster risk in Sumida ward, Tokyo

*MAYCHEE LIAN1 (1.University of Tsukuba)

Keywords:Disaster, Disaster risk assessment, Sumida ward

The understanding of disaster risk in a spatiotemporal perspective helps to mitigate the potential damages of disasters effectively. In this study, the Data Envelopment Analysis (DEA) technique and people flow data are integrated to develop a disaster risk assessment to understand the disaster risks in both spatial and temporal manner. In doing so, Sumida ward, located in the northern part of Tokyo bay is selected as the case study. Geographically, Sumida ward is situated in an alluvial lowland area and there are many places below the mean sea level with high population density and several urban features. Most of the man-made features of this area are made out of wood faces and having a higher potential for extreme damages. Generally, the damage by disaster is strongly related to the population density of the area. But the population density of the area is varying with the people movement within a day. Thus, the present study assesses the disaster risk levels with the different time periods of the day based on people flow and its spatial pattern through the developed assessment.