Generation of Risk Information Based on Comprehensive Real-Time Analysis of Flooding and Landslide Disaster Occurrence Hazard and Social Vulnerability
Hiroaki Sano, Yuichiro Usuda, Ichiro Iwai, Hitoshi Taguchi, Ryohei Misumi, and Haruo Hayashi
National Research Institute for Earth Science and Disaster Resilience (NIED)
3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan
It is important to discern in real time the risk level of rain-related disasters such as floods and landslides in order to maintain readiness against heavy-rainfall disasters and to decide on the suitable response measures. In this study, we developed an information processing technology that employs hazard information which indicates the risk of inundation or landslides. It also presents indices of social vulnerability and applies the spatial resolution functions of a geographic information system (GIS) to extract in real time the highly exposed and vulnerable areas that are faced with an increased risk of flooding or landslides. The technology’s validity was verified using a case study – namely, the heavy rainfall that accompanied a pressure front in August, 2019. The results show that, with respect to flood risks, we were able to extract in real time specific areas where flooding may be taking place, thus demonstrating the possibility of applying the technology to decide priorities in disaster response measures. Future issues are related to information dissemination, including the specific labeling and expressions that are easy for the user to understand as well as improving the user interface so as to facilitate delivery of relevant risk information in real time.
-  Cabinet Office, Government of Japan, “Heavy rainfall associated with the rainy season front from 30 June and damage caused by Typhoon No.3 in 2017 Status and other information (as of 12:00 am, January 17, 2018),” 2018, http://www.bousai.go.jp/updates/h29typhoon3/pdf/h300117_29taifu03_38.pdf (in Japanese) [accessed August 29, 2019]
-  Cabinet Office, Government of Japan, “Situation of damage by The Heavy Rain Event of July 2018 (January 9, 2019, 5:00 p.m.),” 2019, http://www.bousai.go.jp/updates/h30typhoon7/pdf/310109_1700_h30typhoon7_01.pdf (in Japanese) [accessed August 29, 2019]
-  M. Ushiyama, M. Honma, S. Yokomaku, and K. Sugimura, “Characteristics of victims caused by heavy rainfall disaster in July, 2018,” J. of Japan Society for Natural Disaster Science, Vol.38, No.1, pp. 29-54, doi: 10.24762/jndsj.38.1_29, 2019 (in Japanese).
-  Japan Meteorological Agency, “Risk Distribution of Warnings,” https://www.jma.go.jp/jma/kishou/know/bosai/riskmap.html (in Japanese) [accessed October 11, 2019]
-  Japan Meteorological Agency, “The state of disaster prevention weather information as indicated in the proposal,” https://www.jma.go.jp/jma/kishou/know/bosai/teigen.html (in Japanese) [accessed October 11, 2019]
-  Ministry of Land, Infrastructure, Transport and Tourism, “X-band MP (Multi-parameter) radar precipitation information (web image) Public Distribution of the following (announced July 5, 2010),” 2010, http://www.mlit.go.jp/report/press/river03_hh_000243.html (in Japanese) [accessed October 7, 2019]
-  National Research Institute for Earth Science and Disaster Resilience, “Effective Rainfall,” https://sip4dkit-web.bosai.go.jp/rain/effectiverainfall/ (in Japanese) [accessed October 7, 2019]
-  K. Yano, “Study of the Method for Setting Standard Rainfall of Debris Flow by the Reform of Antecedent Rain,” J. of the Japan Society of Erosion Control Engineering, Vol.43, No.4, pp. 3-13, doi: 10.11475/sabo1973.43.4_3, 1990 (in Japanese).
-  H. Terada and H. Nakaya, “Operating Methods of Critical Rainfall for Warning and Evacuation from Sediment-Related Disasters,” Technical Note of National Institute for Land and Infrastructure Management, No.5, pp. 1-58, 2001, http://www.nilim.go.jp/lab/bcg/siryou/tnn/tnn0005pdf/ks0005.pdf (in Japanese) [accessed August 29, 2019]
-  National Research Institute for Earth Science and Disaster Resilience, “NIED Crisis Response Site (NIED-CRS),” http://crs.bosai.go.jp/ (in Japanese) [accessed August 29, 2019]
-  National Land Information Division, National Spatial Planning and Regional Policy Bureau, Ministry of Land, Infrastructure, Transport and Tourism, “National Land Numerical Information Download Service,” http://nlftp.mlit.go.jp/ksj/ (in Japanese) [accessed August 29, 2019]
-  S. Tsuchiya, “A Factual Analysis of the Urbanization Rate in Japan: From the Perspective of Regional Economies,” Bank of Japan Working Paper Series, No.09-J-4, 2009, https://www.boj.or.jp/research/wps_rev/wps_2009/data/wp09j04.pdf (in Japanese) [accessed August 29, 2019]
-  Ministry of Land, Infrastructure, Transport and Tourism, “Flood Hazard Map,” http://www.mlit.go.jp/river/bousai/main/saigai/tisiki/syozaiti/ (in Japanese) [accessed August 29, 2019]
-  Ministry of Land, Infrastructure, Transport and Tourism, “Erosion control,” http://www.mlit.go.jp/mizukokudo/sabo/linksinpou.html (in Japanese) [accessed August 29, 2019]
-  Japan Meteorological Agency, “Forecasts and Actual Rainfall Estimates for Cases with Heavy Rainfall Special Warnings (Quick Report): Heavy Rainfall Special Warnings were issued for Saga, Fukuoka, and Nagasaki Prefectures on August 28, 2019 (published on September 6, 2019),” 2019, https://www.jma.go.jp/jma/kishou/know/jirei/sokuhou/R010828.pdf (in Japanese) [accessed October 9, 2019]
-  Cabinet Office, Government of Japan, “Situation Report on the Damage Caused by Heavy Rainfall in August 2019 (as of 12:00 noon, September 24, 2019),” 2019, http://www.bousai.go.jp/updates/r18gatuoame/pdf/r1_8gatuoame_13.pdf (in Japanese) [accessed October 3, 2019]
-  Takeo River Office, Kyushu Regional Development Bureau, Ministry of Land, Infrastructure and Transport, “The situation of water flow in Takeo River Office due to heavy rainfall (6th Report),” 2019, http://www.qsr.mlit.go.jp/takeo/site_files/file/201908280630ushizugawaessui.pdf (in Japanese) [accessed October 9, 2019]
This article is published under a Creative Commons Attribution-NoDerivatives 4.0 International License.