北八ヶ岳，地獄谷火口底の氷塊と一時的な火口湖

• 清水 長正

  駒澤大学地理学科非常勤講師

• 山川 信之

  芝浦工業大学中学高等学校

• 石井 正樹

  長野県企業局南信発電管理事務所

• 藤森 美佐枝

  岡谷市役所

• 遠藤 海斗

  早稲田大学教育学研究科大学院

書誌事項

タイトル別名

• Ground Ice and Temporary Crater Lake in Jigokudani Crater, Kita-yatsugatake, Central Japan
• キタヤツガタケ,ジゴクダニ カコウテイ ノ ヒョウカイ ト イチジテキ ナ カコウコ

抄録

 Ground ice and temporary lake were studied in the Jigokudani Crater (N36°03′44.82″, E138°20′45.82″) in a northern area of the Yatsugatake Volcanic Chain (Kita-yatsugatake). The crater, which is about 30 m deep, is located at 2108 m a.s.l., and is surrounded by subalpine coniferous forest where the mean annual air temperature is about 3°C. The ground ice survived in summer mainly because cold air blew down through voids between andesite blocks composing the crater wall. The ice remained throughout 2009, although it melted completely in September 2010. In 2010, a crater lake appeared in May and disappeared in early August. This survival period of the lake was probably much longer than in other years. We consider that the melting of ground ice was promoted by the long-lasting lake having a slightly positive temperature which contacted the ice directly.

収録刊行物

• 地学雑誌

  地学雑誌 121 (2), 359-366, 2012

  公益社団法人 東京地学協会

キーワード

• 氷塊
• 風穴
• 火口湖
• 地獄谷火口
• 北八ヶ岳

詳細情報

• CRID: 1390001204238458496
• NII論文ID: 10031146378
• NII書誌ID: AN00322536
• DOI: 10.5026/jgeography.121.359
• ISSN: 18840884
• ISSN: 0022135X
• NDL書誌ID: 023765427
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023765427
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可