Japan's Fuji Eruption Simulation Causes Unease

Mount Fuji hasn't erupted since 1707. But for Volcanic Disaster Preparedness Day, Japanese officials have released computer- and AI-generated videos showing a simulation of a potential violent eruption of the active volcano. The videos, released this week, are meant to prepare the 37 million residents in the greater Tokyo metropolitan area for potential disasters.

• The Tokyo Metropolitan Government's video warns an eruption could strike "at any moment, without warning," depicting volcanic ash shrouding central Tokyo, about 60 miles away, within hours, paralyzing transportation, disrupting food and power, and causing long-term respiratory problems.
• The video shows that 20 centimeters—around 8 inches—of ash could pile up in Kanagawa Prefecture, just south of Tokyo, over two days if there was an eruption the size of the one in 1707, NHK reports.

• The video ends with the message: "We need to arm ourselves with facts and prepare for disaster in our daily lives." It shows a family's pantry stocked with canned food and a first-aid kit.
• The Tokyo government said in a statement that there are currently no signs of Fuji erupting. "The simulation is designed to equip residents with accurate knowledge and preparedness measures they can take in case of an emergency," it explained.
• But the videos have caused anxiety and confusion among some residents. "Are there actually any signs of eruption?" said Shinichiro Kariya, a 57-year-old hospital employee. "Why are we now hearing things like '10 centimeters of ash could fall,' even in Tokyo? I'm wondering why this is happening all of a sudden." Hiromi Ooki, who lives in Mishima City, which has prime views of Fuji, said she planned to buy emergency supplies the next day. "Nature's power is so great that maybe it's better if it scares us a little," she said.
• University of Tokyo professor and risk communication expert Naoya Sekiya said the government has for years modeled scenarios for volcanic eruptions and earthquakes, but added that does not mean Fuji is about to erupt. "There's no particular significance to the timing," Sekiya said. Fuji, Japan's tallest peak, used to erupt about every 30 years, but it has been dormant since the 18th century.