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| date = | magnitude = 6.4–7.1 Mw (est.)〔 | depth = | countries affected = Kingdom of Portugal | location = 〔 | intensity = X 〔 | casualties = 30,000 deaths }} The 1531 Lisbon earthquake occurred in the Kingdom of Portugal on the morning of 26 January 1531, between 4 and 5 o'clock. The earthquake and subsequent tsunami resulted in approximately 30,000 deaths. ==Event== The earthquake is believed to have been caused by the Lower Tagus Fault Zone, and was preceded by a pair of foreshocks on 2 January and 7 January.〔 Damage to the city, especially the downtown area, was severe: approximately one third of structures in the city were destroyed and 1000 lives were lost in the initial shock.〔 The Ribeira Palace and São João Church were both completely destroyed.〔 Contemporary reports tell of flooding near the Tagus River, some ships being thrown onto rocks, and others grounded on the river's floor as the water retreated.〔 Miranda ''et al.'' conclude that "These observations are coherent with the existence of a large change in the estuary seafloor, either tectonic displacement or a landslide."〔 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「1531 Lisbon earthquake」の詳細全文を読む スポンサード リンク
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