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Offshore Waters Research
Disaster Prevention

Subsea earthquakes sometimes cause” tsunami” resulting in tremendous damage. In the hope of protecting people and properties from earthquake tsunami, we are conducting researches, jointly with external research institutes, regarding the geographical structure, activities and change of seismic areas.

Installing a submarine seismometer designed for extended monitoring of subsea earthquakes

Collecting a crustal movement observatory
from the seafloor

An extended monitoring is conducted to measure the crustal movements in the order of centimeters along plate boundaries (* See illustration).

Source: Nagoya University
“Observation of Submarine Crustal Movements near the Ryukyu Trench”