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|magnitude = 8.4 Mw〔 Kanamori, H., 1977, The energy release of great earthquakes, J. Geophys. Res. 82, 2981-2987.〕 |depth = |location = |type = Dip-slip–Intraplate |countries affected = Japan |damage = |tsunami = Up to in Ryori, Kesen, Iwate, Tōhoku |casualties = 1,522 deaths, 1,542 missing, 12,053 people injured }} The occurred on the Sanriku coast of the Tōhoku region of Honshū, Japan on March 2. The earthquake had a moment magnitude of 8.4 and the associated tsunami caused widespread damage. ==History== The epicenter of the 1933 Sanriku earthquake was located offshore, east of the city of Kamaishi, Iwate. The initial shock occurred at 0231 AM local time on March 3, 1933 (1731 GMT March 2, 1933). The earthquake measured 8.4 on the moment magnitude scale and was in approximately the same location as the 1896 Meiji-Sanriku earthquake. The epicenter occurred far enough away from the town that the earthquake itself did little damage to buildings. Approximately three hours after the main shock was a magnitude 6.8 aftershock, followed by 76 more aftershocks (with a magnitude of 5.0 or greater) over a period of six months.〔(title )〕 This earthquake was an intraplate earthquake in the Pacific Plate.〔"日本海溝・千島海溝周辺海溝型地震に関する専門調査会報告" by 日本海溝・千島海溝周辺海溝型地震に関する専門調査会〕 The focal mechanism of this earthquake showed that it was a normal faulting earthquake.〔"Outer trench-slope faulting and the 2011 Mw 9.0 off the Pacific coast of Tohoku Earthquake" by T. Lay, C. J. Ammon, H. Kanamori, M. J. Kim, and L. Xue〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1933 Sanriku earthquake」の詳細全文を読む スポンサード リンク
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