Tsunami Study Shows Seawalls and Coastal Forests Reduce Damage in Japan

[SOUND] There were four major
tsunamis in the years of 1896, 1933, 1960 and 2011. Our collaborators from the Tohoku
University meticulously gathered data. So we took that data and
developed a range of predictive models. What our analysis actually shows is that
the height of the seawall is an important predictor for both destruction
rates and death rates. With seawalls above 5 meters, associated
with reduced death and damage rates. There is a 31.5 trillion yen
ten-year reconstruction plan and a big part of it is actually building
seawalls along the Pacific Coast of Japan. Given that we have this heated debate
surrounding the effectiveness of seawalls, I was hoping that our analysis would
inform the decision making process of the policy makers going forward.

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