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2001 Geiyo earthquake

2001 Geiyo earthquake
2001 Geiyo earthquake is located in Hiroshima Prefecture
2001 Geiyo earthquake
2001 Geiyo earthquake is located in Japan
2001 Geiyo earthquake
UTC time2001-03-24 06:27:53
ISC event1800460
USGS-ANSSComCat
Local dateMarch 24, 2001
Local time15:27
Magnitude6.7 Mw
Depth50 km
Epicenter34°04′59″N 132°31′34″E / 34.083°N 132.526°E / 34.083; 132.526
TypeNormal
Areas affectedJapan
Max. intensityMMI IX (Violent)[1]

JMA 6−
Casualties2 killed, 288 injured

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

The released seismic moment of the earthquake was 1.3×1019 Nm. This earthquake is a normal faulting intraslab event within the subducting Philippine Sea plate.[7] 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.[8] It has been suggested that this earthquake was related to the dehydration of the Philippine Sea plate slab.[9]

In this region, a strong earthquake occurred in 1905, which was also an intraslab event within the subducting plate.[10]

See also

References

  1. ^ National Geophysical Data Center / World Data Service (NGDC/WDS) (1972). "Significant Earthquake Database" (Data Set). National Geophysical Data Center, NOAA. doi:10.7289/V5TD9V7K.
  2. ^ "Significant Earthquakes of the World 2001". United States Geological Survey. Archived from the original on April 25, 2015.
  3. ^ Yoshimine, M. "2001 Geiyo Earthquake, Japan". Soil Mechanics Laboratory, Civil Engineering, Tokyo Metropolitan University. Archived from the original on 2012-07-11. Retrieved 2012-01-10.
  4. ^ 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.
  5. ^ "平成１３年（２００１年）芸予地震について(About Geiyo Earthquake in 2001)" (PDF) (in Japanese). Archived from the original (PDF) on 2011-10-27. Retrieved 2012-01-10.
  6. ^ Hall, K. "At least two die as strong earthquake hits Japan". The Independent. Archived from the original on 28 July 2014.
  7. ^ Miyatake, T.; Yagi, Y.; Yasuda, T. (2004). "The dynamic rupture process of the 2001 Geiyo, Japan, earthquake". Geophysical Research Letters. 31 (12): L12612. Bibcode:2004GeoRL..3112612M. doi:10.1029/2004GL019721.
  8. ^ "平成13年（2001年）芸予地震（2001年3月24日，M6.7） (2001 Geiyo Earthquake (March 24, 2001, M6.7))" (PDF) (in Japanese).
  9. ^ Zhao, D.; Mishra, O.P.; Sanda, R.; Obara, K.; Umino, N.; Hasegawa, A. (2001). "Seismological Evidence for the Influence of Fluids and Magma on Earthquakes" (PDF). Bulletin of the Earthquake Research Institute University of Tokyo. 76: 271–289. Archived from the original (PDF) on 2014-07-28. Retrieved 2012-01-10.
  10. ^ Hiroshima Crisis Management Supervision, Crisis Management Division . "災害に備えて：地震・津波災害とは (Preparing for a disaster: What is an earthquake / tsunami disaster?)" (in Japanese). Archived from the original on 2013-10-29. Retrieved 2012-05-12.
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