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1509 Constantinople earthquake : ウィキペディア英語版 | 1509 Constantinople earthquake
The 1509 Constantinople earthquake, referred to as "The Lesser Judgment Day" ((トルコ語:Küçük Kıyamet ''or'' Kıyamet-i Suğra)) by contemporaries, occurred in the Sea of Marmara on 10 September 1509 at about 10pm. The earthquake had an estimated magnitude of 7.2 ± 0.3 on the surface wave magnitude scale. A tsunami and forty-five days of aftershocks followed the earthquake. Over a thousand houses and 109 mosques were destroyed, and an estimated 10,000 people died. ==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 this fault, which bounds the Çınarcık Basin, is the most likely cause of the 1509 event.〔
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「1509 Constantinople earthquake」の詳細全文を読む
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