…As a result, the summit crater collapsed, forming a caldera about 4 km in diameter. Pyroclastic flow deposits filled a wide valley extending to the north, which was named the Valley of Ten Thousand Smokes, and numerous secondary fumaroles were active for several decades after the eruption. The area around Mount Katmai was designated a national monument in 1918. … *Some of the terminology that refers to "Valley of Ten Thousand Smokes" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その結果,山頂火口は陥没し,径約4kmのカルデラを生じた。火砕流堆積物は北にのびる広い谷を埋め,Valley of Ten Thousand Smokesと名づけられ,多数の二次噴気孔が噴火後数十年間活動した。なお,カトマイ山一帯は1918年国立記念物に指定された。… ※「Valley of Ten Thousand Smokes」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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