2001 Geiyo earthquake

2001 Geiyo earthquake
UTC time 2001-03-24 06:27:53
ISC event 1800460
USGS-ANSS ComCat
Local date March 24, 2001
Local time 15:27
Magnitude 6.7 Mw
Depth 50 km
Epicenter 34°04′59″N 132°31′34″E / 34.083°N 132.526°E / 34.083; 132.526
Areas affected Japan
Casualties 2 killed

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.[1] Liquefaction was observed in Hiroshima[2] and Ehime.[3] Power outage occurred in the prefectures of Hiroshima, Ehime, Okayama, Yamaguchi, and Kōchi. The maximal intensity was shindo lower 6 in Hiroshima.[4] This earthquake could be felt along the eastern and southern coasts of South Korea.[5]

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.[6] 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.[7] It has been suggested that this earthquake was related to the dehydration of the Philippine Sea Plate slab.[8]

In this region, a strong earthquake occurred in 1905, which was also an in-slab event within the subducting plate.[9]

See also

References

  1. ↑ https://earthquake.usgs.gov/earthquakes/eqarchives/significant/sig_2001.php
  2. ↑ http://geot.civil.ues.tmu.ac.jp/archives/eq/01geiyo/
  3. ↑ Sakakibara, Masayuki; Inouchi, Yoshio; Nara, Masakazu (2002). "Liquefaction of reclaimed land in Toyo City, Ehime Prefecture, by the 2001 Geiyo earthquake". Journal of the Geological Society of Japan. 108 (6): XIII–XIV. doi:10.5575/geosoc.108.XIII.
  4. ↑ http://www.bousai.go.jp/kinkyu/akinada/akinada0919.pdf
  5. ↑ https://www.independent.co.uk/news/world/asia/at-least-two-die-as-strong-earthquake-hits-japan-688814.html
  6. ↑ http://www.eri.u-tokyo.ac.jp/miyatake/2004GL019721.pdf
  7. ↑ http://cais.gsi.go.jp/YOCHIREN/history/2-3-3_geiyo2001.pdf
  8. ↑ http://repository.dl.itc.u-tokyo.ac.jp/dspace/bitstream/2261/13222/1/ji0763001.pdf
  9. ↑ http://www.bousai.pref.hiroshima.jp/www/contents/1318849208059/index.html
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