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The 2005 Sumatra earthquake (referred to as the Nias earthquake by the scientific community) occurred on 28 March off the west coast of northern Sumatra, Indonesia. Approximately 1300 people were killed by it, mostly on the island of Nias. The event caused panic in the region, which had been devastated by the massive tsunami triggered by the 2004 Indian Ocean earthquake, but this earthquake generated a relatively small tsunami that caused limited damage. It was the third most powerful earthquake since 1965 in Indonesia. The earthquake occurred at 16:09:36 UTC (23:09:36 local time) on 28 March 2005. The hypocenter was located at , below the surface of the Indian Ocean, where subduction is forcing the Indo-Australian Plate to the southwest under the Eurasian plate's Sunda edge. The area is west of Sibolga, Sumatra, or northwest of Jakarta, approximately halfway between the islands of Nias and Simeulue. Seismic recordings give the earthquake a moment magnitude of about 8.6,〔 and effects were felt as far away as Bangkok, Thailand, over away. ==Earthquake and damage== The earthquake lasted for about two minutes. In the twenty-four hours immediately after the event, there were eight major aftershocks, measuring between 5.5 and 6.0. Despite the proximity of the epicenter to that for the 2004 Indian Ocean earthquake, it ruptured a separate segment of the Sunda megathrust and was most likely triggered by stress changes associated with that earlier event. On the Indonesian island of Nias, off the coast of Sumatra, hundreds of buildings were destroyed by the earthquake. The death toll on Nias was at least one thousand, with 220 dying in Gunungsitoli, the island's largest town. Nearly half of Gunungsitoli's population (27000) fled the town. The earthquake was strongly felt across the island of Sumatra and caused widespread power outages in the Indonesian city of Banda Aceh, already devastated by the December 2004 tsunami, and prompted thousands to flee their homes and seek higher ground. It was strongly felt along the west coast of Thailand and Malaysia, and in Kuala Lumpur high-rise buildings were evacuated. The earthquake was felt less strongly in the Maldives, India, and Sri Lanka. 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「2005 Sumatra earthquake」の詳細全文を読む スポンサード リンク
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