南アルプス南部，大聖寺平および丸山における風食ノッチの発達プロセス

• 小山 拓志

  明治大学大学院文学研究科

書誌事項

タイトル別名

• Processes of Turf Scarp Development Observed on Daisyoujidaira and Mt. Maru-yama, Southern Japanese Alps
• ミナミアルプス ナンブ,ダイショウジ タイラ オヨビ マルヤマ ニ オケル フウショク ノッチ ノ ハッタツ プロセス

抄録

 Turf scarps and patch-shaped barelands are clearly observed on windy alpine ridges and wind-swept slopes of Japanese mountains. This study investigates the formation and retreat of turf scarps at the Daisyoujidaira site (2700 m a.s.l.) and Maru-yama site (3025 m a.s.l.), Southern Japanese Alps.<br> The average distances of scarp retreat are 2.2 cm/2 years (Daisyoujidaira site: 2006-2008), 0.5 cm/year (Maru-yama site: 2006-2007), and 3.6 cm/year (Maru-yama site: 2007-2008).<br> At the Daisyoujidaira site, generation of turf scarps started on the walls of trails or gullies. The retreat processes of turf scarps are considered to be a combination of frost-thaw action (needle ice creep), deflation, rain-splash erosion, and slope wash. However, at the Daisyoujidaira site, turf scarps with curtain-like exposure of plant roots are protected from deflation and rain-splash erosion during summer.<br> On the other hand, at the Maru-yama site, eave collapsing and turf plucking occur frequently, and turf scarps continue to retreat. As a result, patch-shaped barelands continue to expand on the wind-swept slope of Maru-yama.

収録刊行物

• 地学雑誌

  地学雑誌 120 (6), 981-992, 2011

  公益社団法人 東京地学協会

キーワード

• 風食ノッチ
• 風食
• 堆積構造
• 高山帯
• 南アルプス

詳細情報

• CRID: 1390282679213836160
• NII論文ID: 10031146346
• NII書誌ID: AN00322536
• DOI: 10.5026/jgeography.120.981
• ISSN: 18840884
• ISSN: 0022135X
• HANDLE: 10291/17784
• NDL書誌ID: 023464515
• Web Site: https://meiji.repo.nii.ac.jp/records/22
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023464515
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可