1911 Kikai Island earthquake

The 1911 Kikai Island earthquake (1911年喜界島地震 Sen-kyūhyaku-jyūichi-nen Kikai-jima Jishin) occurred on June 15 at 14:26 UTC (23:26 local time). The earthquake was located near Kikai Island, Japan. It had a magnitude of Ms 8.1.[2]

1911 Kikai Island earthquake
UTC time1911-06-15 14:25:53
ISC event16958149
USGS-ANSSComCat
Local date15 June 1911 (1911-06-15)
Local time23:26
MagnitudeMs 8.1
Depth90 km (56 mi) [1]
Epicenter28.00°N 130.00°E / 28.00; 130.00 [1]
Areas affectedJapan
Casualties12 deaths

The earthquake occurred near the northern end of the deepest region in Ryukyu Trench.[3] The hypocenter was located near 28.00°E, 130.00°N, about 30 km south of the Kikai Island, with a depth of about 100 km. However, due to the instrumental precision of that time, the location of the hypocenter was just an approximation, and estimations differ. A recent study estimated that the hypocenter was located near 28.90°E, 130.25°N, about 60 km NNE of the Kikai Island, with a depth of about 30 km.[4]

Twelve people were reported dead, including one on Kikai Island. Four hundred and twenty two houses were completely destroyed, 401 of which on Kikai Island. Damage was also reported on Amami Ōshima, Toku-no-shima, and Okinawa Island.[5] The wall of Shuri Castle in Shuri was damaged.[6][7] This earthquake could be felt as far as in Shanghai, China, Tainan, Taiwan (then under Japanese rule), and Fukushima, Japan.[7][8]

Tsunami

The earthquake triggered a tsunami which was recorded on Kikai Island and Amami Ōshima.[4] The tsunami was relatively small on the east coast of Kikai Island, but had a height of at least 5m on the west coast of Kikai Island and also in Amami Ōshima, and may have had a maximum height of over 10m in certain parts of Kikai Island.[9]

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See also

References
  1. Engdahl, E. R.; Vallaseñor, A. (2002). "Global seismicity: 1900–1999". International Handbook of Earthquake & Engineering Seismology. Part A, Volume 81A (First ed.). Academic Press. p. 672. ISBN 978-0124406520.
  2. "Seismotectonics of the Western Pacific region" by T. Seno
  3. Mogi, K. (1969). "Relationship between the occurrence of great earthquakes and tectonic structures" (PDF). Bulletin of the Earthquake Research Institute. Earthquake Research Institute. 47: 443. Archived from the original (PDF) on 2016-03-04. Retrieved 2013-02-26.
  4. http://www2.jpgu.org/meeting/2012/session/PDF_all/S-SS30/SSS30_P.pdf
  5. "過去の被害地震". www.jma-net.go.jp.
  6. http://sakuya.ed.shizuoka.ac.jp/rzisin/kaishi_24/HE24_007_031_05Takemura.pdf
  7. "Archived copy" (PDF). Archived from the original (PDF) on 2013-10-20. Retrieved 2013-02-26.CS1 maint: archived copy as title (link)
  8. "本世纪上海地区地震概述及地震活动与断裂的关系" by 刘昌森
  9. Iwamoto K, Kazuhiko G (2013). Oral survey of the tsunami generated by the 1911 great earthquake (M8.0) that occurred around Kikai-jima, Japan. Japan Geoscience Union Meeting (in Japanese), Makuhari, Chiba, 19–24 May 2013. "岩本健吾、後藤和彦：1911年に喜界島近海で発生した巨大地震(M8.0)に伴う津波の聞き取り調査" (PDF). 日本地球惑星科学連合2013年資料
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