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2001 Geiyo earthquake

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Covid-19
Date  March 24, 2001
Depth  50 km
Casualties  2 killed
Magnitude  6.7 Mw
Areas affected  Japan
2001 Geiyo earthquake

The 2001 Geiyo earthquake (2001年芸予地震 Nisen-ichi-nen Gēyo Jishin) occurred with a moment magnitude of 6.7 on March 24 at 15:27 local time near Hiroshima, Japan. One person in Hiroshima and one person in Ehime were reported dead. About 3,700 buildings were damaged in the Hiroshima area. Liquefaction was observed in Hiroshima and Ehime. Power outage occurred in the prefectures of Hiroshima, Ehime, Okayama, Yamaguchi, and Kōchi. The maximal intensity was shindo lower 6 in Hiroshima. This earthquake could be felt along the eastern and southern coasts of South Korea.

The released seismic moment of the earthquake was 1.3×1019 Nm. This earthquake is a normal faulting in-slab event within the subducting Philippine Sea Plate. The slip of the earthquake was estimated to be about 1.5–2.4 meters (4 ft 11 in–7 ft 10 in). The locations of aftershocks were distributed roughly in N-S direction. It has been suggested that this earthquake was related to the dehydration of the Philippine Sea Plate slab.

In this region, a strong earthquake occurred in 1905, which was also an in-slab event within the subducting plate.

References

2001 Geiyo earthquake Wikipedia


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