最終氷期における日高山脈の氷河の流動の復元

• 劉 大力

  北海道大学大学院地球環境科学研究科

• 小野 有五

  北海道大学大学院地球環境科学研究科

• 成瀬 廉二

  北海道大学低温科学研究所

書誌事項

タイトル別名

• A reconstruction of flow of alpine glaciers during the Last Glacial Maximum in the Hidaka Range, central Hokkaido.
• サイシュウ ヒョウキ ニ オケル ヒダカ サンミャク ノ ヒョウガ ノ リュウ

抄録

Flow conditions were reconstructed for 18 alpine glaciers in the Hidaka Range, during the LGM (Last Glacial Maximum, about 18, 000 y.B.P.), assuming a plastic and laminar flow without basal sliding.Reconstructed annual discharge through the cross section at the ELA (Equilibrium Line Altitude)on 18 glaciers almost coincided with the amount of reconstructed annual net ablation (or accumulation)below(or above)the ELA, when the mean ice temperature was assumed to be -7°C and -8°C, together with assumed air temperature cooling of 6°8°C.The flow velocity range at the center of the ELA was between 1 and 20 m/a, depending on the surface gradient and the ice thickness.Comparison of these flow velocities with those of present day glaciers, without basal sliding, suggests that the glaciers of the Hidaka Range during the LGM were similar in character to small modern cirque and valley glaciers in the world.

収録刊行物

• 雪氷

  雪氷 60 (1), 47-54, 1998

  公益社団法人 日本雪氷学会

キーワード

• 氷河地形
• 平衡線高度
• 質量収支
• 氷河氷温度
• 氷河流動

詳細情報

• CRID: 1390282681438583424
• NII論文ID: 10002383922
• NII書誌ID: AN00131221
• DOI: 10.5331/seppyo.60.47
• ISSN: 18836267
• ISSN: 03731006
• NDL書誌ID: 4390585
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4390585
• 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