On August 26, computer-generated videos illustrating the potential impact of a large-scale eruption of Mt Fuji on Tokyo were released. The videos were produced by the Cabinet Office and the Tokyo Metropolitan Government to coincide with Japan’s Volcano Disaster Preparedness Day. The goal is to help people better visualize what could happen and use that understanding to strengthen disaster preparedness.
Video released by the Tokyo Metropolitan Government.
Ashfall in Tokyo
The Cabinet Office’s video explains that if an eruption on the scale of the Hoei Eruption of 1707 were to occur, ash could accumulate in Shinjuku Ward — over 90 kilometers away (about 56 miles) — within two days. The amount would exceed 5 centimeters (about 2 inches), depending on wind direction.
Both videos also show the potential consequences of such an eruption. These include wooden houses collapsing under rain-soaked ash, train service suspensions, power outages, water supply disruptions, mobile phone communication failures, and wide-ranging health impacts.
Video released by the Cabinet Office.
Monitoring and Preparedness
Mt Fuji is under strict, continuous observation, and there are currently no signs of an impending eruption. Countermeasures are well underway, and Tokyo has already released additional preparedness videos alongside the computer-generated simulation. Authorities say there is no need for undue concern with proper preparation. For example, in Kagoshima, ashfall is a routine occurrence. The public is encouraged to stay informed and prepare calmly.
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(Read the article in Japanese.)
Author: The Sankei Shimbun
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