Understanding and Preparing for Earthquake Risks in Japan: The Recent Seismic Activities

By 10/01/2024未分類

On January 9th at 17:59, a magnitude 6.0 earthquake struck the Chuetsu area of Niigata Prefecture. This event occurred near the location of the January 1st earthquake off the Noto Peninsula but originated from a different active fault.

Currently, a series of swarm earthquakes are being observed in Niigata Prefecture. Experts indicate that movement in one active fault can trigger activity in another nearby fault. In fact, the Noto Peninsula has been experiencing these swarm earthquakes for the past three years. Therefore, experts had anticipated the possibility of a significant earthquake occurring in this region.

The pattern of seismic activities suggests a high likelihood of a major earthquake occurring in the Niigata area soon. Historical data and analysis often show that an increase in small swarm earthquakes can be a precursor to a larger seismic event, suggesting that major earthquakes can, to some extent, be predictable.

The recent seismic activities along the coast of the Sea of Japan are geographically distant from Osaka, presenting no direct issues for the region.

However, it is crucial to note that Osaka is expected to be affected by the “Nankai Trough Earthquake” within the next decade (around 2030-2040). This earthquake is scientifically predicted to occur and could happen at any time. It is anticipated to be of the same magnitude as the Great East Japan Earthquake, including significant tsunamis. Being in a highly urbanized area of Japan (including Osaka, Nagoya, and the Kanto region), the potential damage from this earthquake could be catastrophic.

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