Approaching the Threat of Nankai Trough Mega Tsunami with Digital Twin Technology to Protect Lives

Visualizing the Threat of Tsunami with Digital Twin Technology

On March 12, 2025, Tokai TV’s news program NEWS ONE introduced the latest research aimed at protecting lives from tsunamis caused by the Nankai Trough earthquake. The focus is on a study utilizing “digital twin” technology—a virtual replica of the real world—to simulate tsunami inundation areas. This technology is expected to visualize disaster risks and enhance public awareness of disaster preparedness.

The Imminent Threat of Tsunami

The Nankai Trough earthquake originates from the seabed stretching from Suruga Bay to Hyuga-nada in Kyushu. Historically, this type of earthquake has occurred repeatedly, and there are concerns that it will strike again in the near future. The accompanying tsunami poses a significant threat, as past events have caused extensive damage to coastal areas, claiming lives and property.

Digital Twin Technology Saving Lives

Digital twin technology collects real-world data and recreates it virtually. In this study, digital twins simulate tsunami inundation ranges and depths using data on terrain, buildings, and historical tsunami records. This enables precise predictions of how far tsunamis will reach and their height. Residents can check whether their homes or workplaces fall within inundation zones and plan evacuation routes or shelters accordingly.

Transforming Disaster Awareness through Visualization

Traditional disaster preparedness relied on static information like hazard maps. However, digital twin simulations provide a dynamic visualization of how tsunamis approach, helping residents better understand the threat. This visual representation fosters a stronger sense of urgency and encourages proactive disaster preparedness.

Evacuation: The Key to Survival

Timely evacuation is crucial to saving lives during a tsunami. Digital twin simulations aid in determining evacuation timing and safe locations. For instance, simulations can identify areas that remain safe before a tsunami arrives, allowing them to be designated as evacuation spots.

Combining Digital Technology with Human Wisdom

While the Nankai Trough earthquake’s tsunamis could cause catastrophic damage, leveraging advanced technologies like digital twins can mitigate these impacts. However, relying solely on technology is insufficient; combining human wisdom and experience is essential. By learning from past lessons, maintaining high disaster awareness, and conducting regular evacuation drills, people can act calmly during emergencies.

The initiative Tsunami Safe—Protecting Lives from Tsunamis continues to disseminate disaster preparedness information using cutting-edge technologies like digital twins to safeguard as many lives as possible.