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