Nobuko Goto 津 津 TSUNAMI PREPAREDNESS IN LOS ANGELES
Mar 31, 2015
Nobuko Goto
津波
TSUNAMI PREPAREDNESS IN LOS ANGELES
* The height of Tsunami was higher than estimated height by government
* The height of Tsunami was higher than multistory buildings
Japan Tsunami Damage Northeastern Japan was hit by a massive
earthquake and Tsunami on March 11, 2011. The damage was worse;
The height of Tsunami was higher than the level estimated by government
Local people are not used to Tsunami Preparedness
breakwater
New Tsunami Preparedness approach
Source: Shizuoka Prefecture,http://www.e-quakes.pref.shizuoka.jp/shiraberu/hinan/05/04.html
Tsunami
Tsunami
Tsunami
Expected Inundation areas
Evacuation areas
Tsunami evacuation multistory building
About 200 meters
HighLow
Research Questions
Using Tsunami preparedness approach of Tsunami evacuation buildings, Which areas are missing with tall buildings for
evacuation? Which areas would have more damage by
Tsunami ? Which areas government should begin, if this
policy approach is adopted?
Study Area
California
2000mMalibu
Santa MonicaRedondo Beach
Rancho Palos Verdes
Covered Areas by existing structures (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: 25,4391
Possible heavy damage locations
Influence factors Low elevation Old age of building High percentage of elderly people Close distance
1. Elevation
2. Age of building
3. Proportion of elderly people
4. Distance
Missing Evacuation Areas with high priority
Aggregate elements and find possible areas of heavy damage Parameters and weight
Parameters Level WeightElevation 2 50%
Distance 4 25%
Percentage of elderly 3 15%
Age of building * 2 10%
* I weighed this parameter only 10%, because the minimum size of survey is block group.
Model - reclassifying
Possible damage areas
High
Low
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