米地質調査所、大災害リスクの火山18を報告 イエローストーンは落選

© REUTERS / Terray Sylvesterキラウエア火山
キラウエア火山 - Sputnik 日本
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米地質調査所(USGS)は22日、米国政府に、国民にとって最も危険な火山の報告書を提出した。火山の位置、噴火活動のレベル、噴火への準備に基づき、研究者らはハワイ島からカリフォルニア州まで計18の火山を「非常に高い脅威」カテゴリーに分類した。

スプートニク日本

最も危険な火山はハワイにあるキラウエア火山。今年5月に強い噴火を起こし、地元住民が島から避難した。世界第2位の大きさを誇るハワイのマウナ・ロア山もリスト入りした。

© AP Photo / U.S. Geological SurveyThis Friday, May 4, 2018, aerial image released by the U.S. Geological Survey, at 12:46 p.m. HST, a column of robust, reddish-brown ash plume occurred after a magnitude 6.9 South Flank of Kīlauea earthquake shook the Big Island of Hawaii, Hawaii. The Kilauea volcano sent more lava into Hawaii communities Friday, a day after forcing more than 1,500 people to flee from their mountainside homes, and authorities detected high levels of sulfur gas that could threaten the elderly and people with breathing problems.
キラウエア火山 - Sputnik 日本
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This Friday, May 4, 2018, aerial image released by the U.S. Geological Survey, at 12:46 p.m. HST, a column of robust, reddish-brown ash plume occurred after a magnitude 6.9 South Flank of Kīlauea earthquake shook the Big Island of Hawaii, Hawaii. The Kilauea volcano sent more lava into Hawaii communities Friday, a day after forcing more than 1,500 people to flee from their mountainside homes, and authorities detected high levels of sulfur gas that could threaten the elderly and people with breathing problems.
© AP Photo / Ira SchwarzFILE - In this March 25, 1984, file photo, lava erupts along Mauna Loa volcano in Hawaii. Hawaii's Kilauea volcano has captivated people around the world by shooting lava high into the sky and sending rivers of molten rock pouring down hillsides into the ocean over the past month, but it's only one of many volcanoes in the islands.
マウナ・ロア山 - Sputnik 日本
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FILE - In this March 25, 1984, file photo, lava erupts along Mauna Loa volcano in Hawaii. Hawaii's Kilauea volcano has captivated people around the world by shooting lava high into the sky and sending rivers of molten rock pouring down hillsides into the ocean over the past month, but it's only one of many volcanoes in the islands.
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This Friday, May 4, 2018, aerial image released by the U.S. Geological Survey, at 12:46 p.m. HST, a column of robust, reddish-brown ash plume occurred after a magnitude 6.9 South Flank of Kīlauea earthquake shook the Big Island of Hawaii, Hawaii. The Kilauea volcano sent more lava into Hawaii communities Friday, a day after forcing more than 1,500 people to flee from their mountainside homes, and authorities detected high levels of sulfur gas that could threaten the elderly and people with breathing problems.
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FILE - In this March 25, 1984, file photo, lava erupts along Mauna Loa volcano in Hawaii. Hawaii's Kilauea volcano has captivated people around the world by shooting lava high into the sky and sending rivers of molten rock pouring down hillsides into the ocean over the past month, but it's only one of many volcanoes in the islands.

イエローストーン - Sputnik 日本
米を「消し去る」イエローストーン大火山は予想より早く目覚める=学者
リストのうち5つの火山はアラスカ州にあり、大型の都市、重要なインフラ施設、通りの激しい空中回廊付近にある。

残り11の火山はワシントン州、カリフォルニア州、オレゴン州に集中。通常、全て人口密集地帯にあり、噴火が起きれば大規模な物的・人的被害が予測される。

イエローストーンの火山は「非常に高い脅威」の火山リストには入らなかった。専門家は、異常な動きを検出しなかったためだ。

USGSの報告書には他に「高い脅威」の火山39、「中程度の脅威」が49、「低い脅威」が34あり、「非常に低い脅威」の火山は21となっている。

関連ニュース

火山の「音楽」で噴火予測へ

アイスランドの火山 覚醒の最初の危険な兆候を学者らが発見

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