Presentation on theme: "Nobuko Goto. * Tsunami easily overflowed tsunami barrier constructed by government * The height of Tsunami was larger than that of two- or three-story."— Presentation transcript:
* Tsunami easily overflowed tsunami barrier constructed by government * The height of Tsunami was larger than that of two- or three-story building Damages by Tsunami in Japan March 11 th, 2011 a huge earthquake and Tsunami hit northern part of Japan. What made so big damages? The height of Tsunami was much larger than that expected by government Local people were not prepared for so big tsunami breakwater
A new scheme for Tsunami preparedness Source: Shizuoka Prefecture,http://www.e-quakes.pref.shizuoka.jp/shiraberu/hinan/05/04.html Tsunami Expected Inundation area Evacuation areas Tsunami evacuation building About 200 meters Possible areas that need evacuation buildings Areas that do not need evacuation buildings Covered area Direction of evacuation evacuees
Research points Applying Tsunami evacuation buildings scheme to Los Angeles, Which areas are lacking in multi story buildings for evacuation? Which areas will be seriously damaged by Tsunami ? Which areas need Tsunami evacuation buildings ?
Study Area California 2000m Malibu Santa Monica Redondo Beach Rancho Palos Verdes
Areas covered by existing buildings (200 and 500 m) * Average male walking (80m/minutes)- 200m: 2.5 minutes, 500m: 6.25 minutes Total number of buildings in the hazard area: 254,391
Predicting areas with higher damage Possible factors Elevation Age of buildings Percentage of elderly people Distance from coastal line
Shortage of Evacuation Areas with high possibility Find out locations that are lacking in multistory evacuation buildings Parameters and weight ParametersLevelsWeight Elevation250% Distance425% Percentage of elderly315% Age of buildings *210% * I weighed this only 10%, because the minimum size of survey is block group.
High priority areas for Tsunami preparedness Manhattan Beach ~ Hermosa Beach Between Marina Del Rey and LAX Areas close to Malibu beach coast Around Santa Monica Airport High Low
Summary and concluding remarks Malibu Beach coast, around Santa Monica Airport, areas nestled between Marina Del Rey and Lax and coast areas close to Manhattan and Hermosa Beach have higher priority for Tsunami preparedness.
Reference Guideline of Tsunami evacuation building, Cabinet Office, Japanese Government, http://www.bousai.go.jp/oshirase/h17/tsunami_hi nan.html Los Angeles County Tsunami Inundation Map, http://www.conservation.ca.gov/cgs/geologic_ha zards/Tsunami/Inundation_Maps/LosAngeles/Pa ges/LosAngeles.aspx Miho Yoshimura, The introduction of incentives to earthquake vulnerability of buildings (September, 2005) http://repository.dl.itc.u- tokyo.ac.jp/dspace/handle/2261/50136