Science View S2013E26 - Deep-seated Landslides

They have enough destructive power to wipe out whole communities in an instant. "Deep-seated" landslides can move at 100km per hour leaving no time for escape. We now know that their cause lies in the makeup of Japan's mountain ranges. We also know that radar can now help to predict them. In this Science View, we take a close look at just how these devastating natural calamities occur.