Under the ocean, at a depth of 4,500 meters, hides a structure that silently threatens to destroy much of Japan before 2050. This is the Nankai Trench, a geological formation that has historically produced the deadliest earthquakes in Japan’s history.

The government of Japan has predicted that a mega earthquake of magnitude 9 or higher will occur in this place in the next 30 years, which could claim more than 300,000 lives if the necessary forecasts are not made.

But how do they know that the next mega earthquake will occur here? Which cities are the most vulnerable to this catastrophic event, and how is Japan preparing for this mega earthquake? Prepare yourself; this video will tell you everything you need to know about the Nankai Trench mega earthquake. Why is this area so prone to earthquakes?

Japan is known for being one of the most seismically active countries in the world, and this is no coincidence. The Japanese archipelago is located within one of the planet’s most complex and dynamic tectonic zones, the Pacific Ring of Fire. This ring is a substantial geological chain that borders the Pacific Ocean and extends along the coasts of America, Asia, and Oceania.

Approximately 90% of all earthquakes in the world occur within this region, and Japan is at the heart of the system. The Ring of Fire results from the interaction of multiple tectonic plates colliding, sliding, or overlapping each other. Japan, in particular, is located at the convergence of four major tectonic plates: the Pacific Plate, the Philippine Plate, the Eurasian Plate, and the North American Plate.

This collision of the four plates generates a massive accumulation of energy along these subduction zones, where one plate sinks under another, causing deformations and ruptures in the Earth’s crust.

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