1930 North Izu earthquake

Japan Shizuoka Prefecture 1930-11-25 19:02:53 iscgem907761 907761 November 26, 1930 04:02 s y 7.3 19 km on 35.00 N 139.00 E 272 killed 1930 North Izu earthquake Japan The 1930 North Izu earthquake (1930年北伊豆地震, Sen-kyūhyaku-sanjū-nen Kita-Izu Jishin) occurred on November 26 at 04:02 local time November 25 at 19:02 UTC.Significant Earthquake Database https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1 https://web.archive.org/web/20060929000601/http://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1 dead September 29, 2006 National Geophysical Data Center / World Data Service (NGDC/WDS) National Geophysical Data Center, NOAA 10.7289/V5TD9V7K 1972 Data Set The epicenter was located in the northern Izu Peninsula, Japan. It had a magnitude of s y 7.3, and was caused by the movement of the Tanna Fault (丹那断層). Geology The Izu Peninsula is located in the northern tip of the Philippine Sea plate. However, the GPS vectors of the Izu Peninsula are almost westwards, which are different from the northwestward motion of the Philippine Sea plate. A seismically active area in the east off the Izu Peninsula might be the deformation zone between the Izu Peninsula and the main part of the Philippine Sea plate or at times be regarded as the boundary between the Izu microplate and the Philippine Sea plate. The suspected boundary may be a complex fracture zone than a simple boundary. In this view, the Izu microplate is pushed northwestwards by the Philippine Sea plate and rotates clockwise, pivoting on the base of the Izu Peninsula. The rotation causes an almost westward motion under the Suruga Bay. The interplate coupling under the Sugura Bay is not weak."Interplate coupling in the Tokai District, Central Japan, deduced from continuous GPS data" by T. Sagiya The Tanna Fault is part of the North Izu Fault Zone (or Kita-Izu Fault Zone) (北伊豆断層帯). The North Izu Fault Zone is about 32 km mi long, lying in the NNE-SSW direction. This fault zone is predominantly of left-lateral strike-slip faulting with an estimated left-lateral slip rate of about 2 m ft per 1000 years.北伊豆断層帯の長期評価について https://www.jishin.go.jp/main/chousa/katsudansou_pdf/38_kitaizu.pdf Headquarters for Earthquake Research Promotion https://web.archive.org/web/20210128134803/https://www.jishin.go.jp/main/chousa/katsudansou_pdf/38_kitaizu.pdf 2021-01-28 Japanese live The 1930 North Izu earthquake was identified with the movement of the Tanna Fault. The focal mechanism was left-lateral strike-slip faulting.http://sk01.ed.shizuoka.ac.jp/koyama/public_html/tanna/tanna.html 丹那断層ガイド sk01.ed.shizuoka.ac.jp 2012-06-01 https://web.archive.org/web/20120421155006/http://sk01.ed.shizuoka.ac.jp/koyama/public_html/tanna/tanna.html 2012-04-21 dead Damage Two hundred and seventy-two people were reported dead in this earthquake. 2,165 houses were totally destroyed. Building damage rate was high along the Tanna Fault.http://www.at-s.com/news/detail/100002906.html 北伊豆地震(９) 断層沿い、高い倒壊率 | 静岡新聞 2012-06-02 https://archive.today/20130118003547/http://www.at-s.com/news/detail/100002906.html 2013-01-18 dead Many buildings collapsed in the village of Kawanishi (川西村), now part of Izunokuni, Shizuoka.http://www.at-s.com/news/detail/100002899.html 北伊豆地震(１) Ｍ7.3、前兆に研究者が注目 | 静岡新聞 2012-06-02 https://archive.today/20130117060053/http://www.at-s.com/news/detail/100002899.html 2013-01-17 dead The earthquake caused many landslides.http://www.e-quakes.pref.shizuoka.jp/manabu/why/b-02.htm 静岡県に被害をもたらした主な地震と日本で近年おきた主な地震 2012-06-01 https://web.archive.org/web/20110609153841/http://www.e-quakes.pref.shizuoka.jp/manabu/why/b-02.htm 2011-06-09 dead A landslide caused 15 deaths in the village of Nakakano (中狩野村), and another one caused 8 deaths in the village of Kitakano (北狩野村), both locations now belong to Izu, Shizuoka.http://www.at-s.com/news/detail/100002907.html 北伊豆地震(10) 脆弱な地盤、山崩れが多発 | 静岡新聞 2012-06-02 https://archive.today/20130117105850/http://www.at-s.com/news/detail/100002907.html 2013-01-17 dead The intensity reached shindo 6 in Mishima, Shizuoka.http://www.e-quakes.pref.shizuoka.jp/shiraberu/higai/saigaishi/sh0011.html 静岡県地震防災センター/三島市 2012-06-02 https://web.archive.org/web/20110707034456/http://www.e-quakes.pref.shizuoka.jp/shiraberu/higai/saigaishi/sh0011.html 2011-07-07 dead Fires were reported in Itō, Shizuoka.http://www.e-quakes.pref.shizuoka.jp/shiraberu/higai/saigaishi/sh009.html 静岡県地震防災センター/伊東市 2012-06-03 https://web.archive.org/web/20110609155214/http://www.e-quakes.pref.shizuoka.jp/shiraberu/higai/saigaishi/sh009.html 2011-06-09 dead Related earthquakes Coulomb stress transfer The change of the Coulomb failure stress due to the 1923 Kantō earthquake may have had contribution to the occurrence of this earthquake.http://usgsprojects.org/tokyo/submitted/Nyst_etal_stress.pdf Archived copy 2012-06-01 https://web.archive.org/web/20170810224227/http://www.usgsprojects.org/tokyo/submitted/Nyst_etal_stress.pdf 2017-08-10 usurped There was an earthquake swarm near Itō, Shizuoka from February 13 to the end of May 1930, to which the November 26 earthquake was not thought to belong.Seismomagnetic models for earthquakes in the eastern part of Izu Peninsula, Central Japan Sasai, Y. Ishikawa, Y. Annals of Geophysics 40 2 463–478 1997 10.4401/ag-3927 11 July 2025 https://www.annalsofgeophysics.eu/index.php/annals/article/view/3927 The largest foreshock of this earthquake occurred on November 25, 1930, at 16:05 local time, and the largest aftershock occurred on March 7, 1931, at 01:53 local time.http://repository.dl.itc.u-tokyo.ac.jp/dspace/bitstream/2261/12794/1/ji0561002.pdf Seismicity of the Izu Peninsula and Its Vicinity from 1901 through 1980 with Some Remarks on the Characteristics of Foreshock Activities 31 August 1981 The University of Tokyo 2012-06-02 https://web.archive.org/web/20160304044825/http://repository.dl.itc.u-tokyo.ac.jp/dspace/bitstream/2261/12794/1/ji0561002.pdf 2016-03-04 dead 2261/12794 Utsu Tokuji Earthquake light A prominent earthquake light was observed.http://www.seis.nagoya-u.ac.jp/EVENT/program_WS.pdfAugust 2018 InternetArchiveBot yes It could be observed over a large area, including the coast of Suruga Bay, the Izu Peninsula, the coast of Sagami Bay, Sagami River Valley, the coast of Tokyo Bay, and the Bōsō Peninsula. The earthquake light was reported to have appeared before the earthquake occurred and continued for at least an hour.2261/9991 昭和五年十一月廿六日伊豆地震に伴ひたる光の現象に就て 22 June 1931 The University of Tokyo 武者 金吉 See also List of earthquakes in 1930 List of earthquakes in Japan References External links 907761 North Izu earthquake, 1930 North Izu earthquake North Izu earthquake Category:Earthquakes of the Shōwa era Category:Earthquakes in the Empire of Japan Category:Earthquakes in Shizuoka Prefecture Category:Izu Peninsula