are frequent In Japan. A survey showed that seismic disturbances, mostly of a minor nature, occurred more than
three times a day. Geological research
has shown that, possibly under the continuous Impact of these disturbances, the western coast of the
Japanese islands is settling, while the Pacific coast Is rising.
eastern coast is subject to earthquakes affecting large areas and usually accompanied by great tidal waves; these shocks
seem to begin at the bottom of the
ocean near the north-eastern coast of Honshu, where a gigantic crater is thought to exist more than 8 km (5 ml) below
disastrous earthquake In Japanese
history occurred In 1923. It was
centred In Sagami Bay and damaged
Tokyo and Yokohama; about
150,000 people were killed by the
earthquake and Its aftermath.
The most damaging post-war earthquake was the Great Hash in Earthquake of 1995, which struck the port of Kobe and killed some 5,000 people; Its magnitude was roughly 7 on the Richter scale.