Earthquakes: Measuring Risk on the Nankai Trough

Nankai Trough - A Seismic Hotspot

The Nankai Trough, an area of seismic activity that stretches along Japan's Pacific coast, has been the source of severe earthquakes throughout history.

According to the Coordinating Committee for Earthquake Prediction (CCEP), these earthquakes have occurred every 100 to 200 years.

Japan has issued a tsunami warning in response to a 7.1-magnitude earthquake that struck off the southern coast.

Earthquake Risk and Preparedness

In 2018, Japan revised its earthquake codes after a major earthquake on the Nankai Trough.

Despite these efforts, an earthquake with a magnitude of 8 or higher remains a significant risk in Japan, as evidenced by a recent advisory issued by the weather agency.

Tsunami Risk

The Nankai Trough earthquakes have the potential to generate powerful tsunamis, posing a threat to coastal communities.

Japan has implemented a tsunami warning system to provide early alerts and evacuation instructions.

Monitoring and Early Warning

Japan has invested heavily in earthquake and tsunami monitoring systems to improve preparedness and risk assessment.

These systems provide valuable data for scientists and emergency responders to monitor seismic activity and issue warnings.

International Collaboration

Japan collaborates with other countries to share data and expertise on earthquake and tsunami risk management.

This collaboration helps to improve early warning systems and disaster preparedness efforts worldwide.