日本发布富士山爆发AI视频：东京或在两小时内被火山灰笼罩

Core Viewpoint - The Japanese government has released an AI-generated video to warn Tokyo's 20 million residents about the potential consequences of a volcanic eruption from Mount Fuji, emphasizing the need for preparedness despite no immediate eruption signs [3][5]. Group 1: Government Actions - The AI video was published by the Tokyo Metropolitan Government's disaster prevention department to illustrate the possible scenario of a volcanic eruption [5]. - On Japan's Volcanic Disaster Prevention Day, the Cabinet Office released another simulation video urging citizens to envision various scenarios for better preparedness [6]. Group 2: Public Response and Concerns - Residents expressed concerns about the potential chaos caused by volcanic ash in Tokyo, with some highlighting the difficulty of preparing essential supplies for emergencies [7]. - Some individuals criticized the government's warnings as overly alarmist, suggesting that such alerts could create unnecessary panic among the public [7]. Group 3: Potential Impact of Eruption - In the event of a large-scale eruption, the government estimates that approximately 1.7 billion cubic meters of volcanic ash could be produced, with about 490 million cubic meters accumulating on roads and buildings [8]. - Experts have warned that significant ash accumulation could lead to the collapse of structures with low load-bearing capacity, and the ash could darken the sky, affecting visibility during the day [9]. - The economic impact of a Mount Fuji eruption could reach up to 25 trillion yen (approximately 166 billion USD), with disruptions to transportation and logistics potentially leading to shortages of essential goods [10].