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Mount Tarawera is the volcano responsible for one of New Zealand's largest historic eruptions. Located 24 kilometres southeast of Rotorua in the North Island, it consists of a series of rhyolitic lava domes that were fissured down the middle by an explosive basaltic eruption in 1886, which killed an estimated 120 people. These fissures run for about 17 kilometres northeast-southwest. The volcano's component domes include Ruawahia Dome (the highest at 1111 metres), Tarawera Dome and Wahanga Dome. It is surrounded by several lakes, most of which were created or drastically altered by the 1886 eruption. These lakes include Lakes Tarawera, Rotomahana, Rerewhakaaitu, Okataina, Okareka, Tikitapu (Blue Lake) and Rotokakahi (Green Lake). The Tarawera River runs northeastwards across the northern flank of the mountain from Lake Tarawera. ==Circa 1315 eruption== Mount Tarawera erupted around 1315. The ash thrown from this event may have affected temperatures around the globe and precipitated the Great Famine of 1315–1317 in Europe. ==1886 eruption== (詳細はpyroclastic surge that destroyed several villages within a 6 kilometre radius, and the Pink and White Terraces appeared to be obliterated. The eruption was heard clearly as far away as Blenheim and the effects of the ash in the air were observed as far south as Christchurch, over 800 km south. In Auckland the sound of the eruption and the flashing sky was thought by some to be an attack by Russian warships. Although the official contemporary death toll was 153, exhaustive research by physicist Ron Keam only identified 108 people killed by the eruption. Much of the discrepancy was due to misspelled names and other duplications. Allowing for some unnamed and unknown victims, he estimated that the true death toll was 120 at most.〔〔(Aftermath - Death list ), Anheizen.com. Accessed 20 March 2009.〕 Some people claim that many more people died.〔In 2007, the General Manager of the Earthquake Commission said that "... Ngati Hinemihi oral accounts put the death toll in the thousands." David Middleton (2007). (A Roof Over Their Heads? The challenge of accommodation following disasters ). Accessed 2008-04-12.〕 The eruption also buried many Māori villages, including Te Wairoa which has now become a tourist attraction, and the world famous Pink and White Terraces were lost. A small portion of the Pink Terraces was rediscovered under Lake Rotomahana 125 years later. Approximately 2 cubic kilometres of tephra was erupted, more than Mount St. Helens ejected in 1980. Many of the lakes surrounding the mountain had their shapes and areas dramatically altered, especially the eventual enlargement of Lake Rotomahana, the largest crater involved in the eruption, as it re-filled with water. The rift created during the eruption extends 17 km across the mountain, Lake Rotomahana and through the Waimangu Volcanic Rift Valley. Some of the local survivors at Te Wairoa took shelter in a Maori meeting house, a wharenui, named Hinemihi, which was later taken to England and erected in the grounds of Clandon Park, the seat of the 4th Earl Onslow, who had been governor-general of New Zealand at the time. 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「Mount Tarawera」の詳細全文を読む スポンサード リンク
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