Sagami Trough, Undersea trough in Kanagawa Prefecture and Tokyo, Japan.
The Sagami Trough stretches 340 kilometers along the western Pacific Ocean, reaching depths that mark the boundary between the Philippine Sea Plate and Okhotsk microplate.
The trough gained scientific attention after the 1923 Great Kanto earthquake, leading to extensive geological studies of submarine formations and plate movements.
Marine research stations near the trough contribute to Japan's understanding of ocean sciences, with local institutions conducting regular surveys of underwater landscapes.
Research vessels conduct regular monitoring of seismic activity through specialized equipment installed at various points along the trough's extension.
The trough's sediment layers contain geological records of past earthquakes, providing data for scientists to predict future seismic events in the region.
Location: Kanagawa Prefecture
Location: Shizuoka Prefecture
Location: Tokyo
Location: Chiba Prefecture
Part of: Philippine Sea Plate
GPS coordinates: 34.70000,139.66667
Latest update: May 27, 2025 09:46
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