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1894 Istanbul earthquake : ウィキペディア英語版 | 1894 Istanbul earthquake
The 1894 Istanbul earthquake occurred in the Çınarcık basin or Gulf of Izmit in the Sea of Marmara on 10 July at 12:24pm. The earthquake had an estimated magnitude of 7.0 on the surface wave magnitude scale. At least an estimated 1,349 people were killed in towns around the Gulf of Izmit such as Yalova, Sapanca and Adapazarı, and in the nearby city of Istanbul.〔 The main shock caused a tsunami high. ==Background==
The Sea of Marmara is a pull-apart basin formed at a releasing bend in the North Anatolian Fault, a right-lateral strike-slip fault. This local zone of extension occurs where this transform boundary between the Anatolian Plate and the Eurasian Plate steps northwards to the west of Izmit from the Izmit Fault to the Ganos Fault. The pattern of faults within the Sea of Marmara basin is complex but near Istanbul there is a single main fault segment with a sharp bend. To the west, the fault trends west-east and is pure strike-slip in type. To the east, the fault is NW-SE trending and show evidence of both normal and strike-slip motion. Movement on the Gulf of Izmit section of the fault, which bounds the Çınarcık Basin, is the most likely cause of the 1894 event.〔 Other possible causes are movement on the Prince's Islands segment of the fault (to the west of the Gulf of Izmit), and movement on a normal fault in the Çinarcik basin, separate from the North Anatolian Fault.
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「1894 Istanbul earthquake」の詳細全文を読む
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