The Nankai Trough (南海トラフ, Nankai Torafu, Southern Sea Trough) is a submarine trough located south of the Nankaidō region of Japan's island of Honshu, extending approximately 900 km (559 mi) offshore.

Nankai megathrust earthquakes (Japanese: 南海トラフ巨大地震, Hepburn: Nankai Torafu Kyodai Jishin) are great megathrust earthquakes that occur along the Nankai megathrust – the fault under the Nankai Trough – which forms the plate interface between the subducting Philippine Sea plate and the overriding Amurian Plate (part of the ...

Aug 13, 2024 · Then there’s the looming threat of the Nankai Trough megathrust earthquake – the most powerful of its kind, with magnitudes that can exceed 9. Seismologists say this could come potentially within...

Jan 22, 2025 · The Nankai Trough runs from Suruga Bay in Shizuoka Prefecture to the Hyuganada Sea off Miyazaki Prefecture. Japan sits on four tectonic plates: the North American, Amurian, Philippine Sea, and Pacific Plates. The trough is a trench formed as the Philippine Sea Plate slides under the Amurian Plate.

Aug 13, 2024 · Here are some questions and answers about the Nankai Trough earthquake, where it could strike and what appropriate measures should be taken to prepare.

Aug 15, 2024 · What is the Nankai Trough? The Nankai Trough is an undersea trench that runs from Hyuganada, in the waters just off the southeastern coast of Kyushu, to Suruga Bay in central Japan. It spans about 800 kilometers (500 miles) along the Pacific coast.

Aug 9, 2024 · A possible Nankai Trough megaquake and tsunami disaster could kill hundreds of thousands of people and cause a trillion-dollar damage to Japan.

Aug 9, 2024 · Experts have warned for decades that it is just a matter of time before a massive Nankai Trough earthquake occurs. Here are five things to know about it and what might come next: What is the...