書誌事項
- タイトル別名
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- Geomorphic Dynamics and Sediment Budget in the Southern Japanese Alps: Recent Studies and Prospects
- 南アルプスにおける地形変動と土砂収支 : 最近の研究動向と展望
- ミナミアルプス ニ オケル チケイ ヘンドウ ト ドシャ シュウシ : サイキン ノ ケンキュウ ドウコウ ト テンボウ
- ―最近の研究動向と展望―
- 公開日
- 2013
- 資源種別
- journal article
- DOI
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- 10.5026/jgeography.122.591
- 公開者
- 公益社団法人 東京地学協会
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説明
This review paper synthesizes geomorphic dynamics, sediment transport and resulting natural hazards in mountains of the southern Japanese Alps and their drainage basins, where climatic and geological situations produce highly active landform dynamics. In alpine areas above the timber line, shallow diurnal freeze-thaw action operating in the thin topsoil produces small-scale periglacial forms, and gravitational spreading leads to numerous sackung features where snow-melt and heavy rain in places promote rockslides. In subalpine and montane areas, deep-seated landslides originate from fractured sedimentary rocks, deep V-shaped valleys, and heavy rain, while shallow landslides continue with historical forest clearance. Continuous slope failures prevent vegetation recovery and maintain debris input to valleys. Steep valleys contribute to high-density debris flows. Frequent or repetitive occurrences of these mass movements promote continuous denudation of slopes, rockfall accidents along hiking trails, and sedimentation at artificial dams. They occasionally cause significant hazards to villages further downstream. Predicting and mitigating slope hazards require distinguishing among annual, low-magnitude processes, episodic high-magnitude processes and geomorphic changes associated with long-term climate change.
収録刊行物
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- 地学雑誌
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地学雑誌 122 (4), 591-614, 2013
公益社団法人 東京地学協会
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詳細情報 詳細情報について
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- CRID
- 1390282679214828544
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- NII論文ID
- 130003373658
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- NII書誌ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
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- NDL書誌ID
- 024871841
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- 本文言語コード
- ja
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
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- 使用不可