List server
Season
Season 1 Episode
- Season 1 Tsunami
- Season 1 Urban Flooding
- Season 1 Urban Windstorms
- Season 1 Long-period Ground Motion and A New Threat
- Season 1 Localized Torrential Rain
- Season 1 Debris Flows
- Season 1 Mt. Fuji's Threat to Tokyo
- Season 1 Heatstroke
- Season 1 Home Flooding
- Season 1 Tornadoes
- Season 1 Post-earthquake Fire
- Season 1 Avalanches
- Season 1 Lightning
- Season 1 Soil Liquefaction
- Season 1 PM2.5
- Season 1 Tsunami Prediction
- Season 1 Human Stampede
- Season 1 Disaster Response Robots
- Season 1 Phreatic Eruptions
- Season 1 Linear Rainbands
- Season 1 Road Cave-ins
- Season 1 Solar Flares
- Season 1 Typhoon Forecasting
- Season 1 Storm Surges
- Season 1 Heavy Snow
- Season 1 Landslides
- Season 1 Quake-resistant Skyscrapers
- Season 1 Tsunami Observation
- Season 1 River Flooding
- Season 1 Fire Tornadoes
- Season 1 Lava Flows
- Season 1 Large-Scale Blackouts
- Season 1 Active Faults
- Season 1 Ensuring a Safe Journey in Japan
- Season 1 Droughts
- Season 1 Wildfires
- Season 1 Tokyo Metropolis
- Season 1 Osaka Metropolis
- Season 1 Emergency Food
- Season 1 Tsunami Evacuation
- Season 1 How to Survive an Earthquake
- Season 1 How to Survive a Flood
- Season 1 Drone Disaster Management
- Season 1 Send in the Robot Fire Brigade!
- Season 1 Safety Tips for Hiking in Japan
- Season 1 Digital Twin
- Season 1 Scientists on a Quest to Control Typhoons
BOSAI: Science that Can Save Your Life - Season 1 Episode 19 Phreatic Eruptions
0.00 15 minutes Mt. Ontake is located on the border of Nagano and Gifu prefectures. Standing 3,067 meters above sea level, it is a popular daytrip hiking spot for mountain enthusiasts. Mt. Ontake was crowded with climbers around noon during a September vacation season, when the sudden stream-driven "phreatic eruption" occurred. Many climbers panicked as they encountered this unexpected natural phenomenon. Why couldn't this eruption be predicted? According to experts, there are 3 main types of volcanic eruptions, and the warning signs of phreatic eruptions are the hardest to detect. Now researchers are making advances to detect the slightest signs of an eruption using observation satellites and chemical approaches. Find out the latest on the research of volcanic predictions.
