Debris slide

Japanese: debris slide(英語表記)debrisslide
Debris slide

...Some contain a large amount of water, while others contain little water and flow like an avalanche, entraining air like a powder flow at extremely high speeds.
[Slide]
Slope material slides upward from the sliding surface, and can be broadly classified into slump, debris slide, and rock slide from slowest to fastest, and are sometimes collectively called landslides. Relatively small-scale events that occur at the edge of cliffs are called cliff failures or landslides, relatively slow sliding that occurs on the slopes of mountains and hills is called a landslide, and rapid sliding that appears to collapse is often called a landslide.

*Some of the terminology that refers to "debris slide" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…多量の水を含むものと,あまり水を含まず粉体流のように空気を巻き込み,きわめて高速でなだれ落ちるように流下するものがある。
[滑動]
 斜面物質がすべり面から上をすべり動くもので,遅いものから早いものへスランプslump,岩屑すべりdebris slide,岩石すべりrock slideに大別され,地すべりと総称されることもある。崖端に生じる比較的小規模のものを崖崩れまたは土砂崩れ,山や丘陵の斜面に生じる比較的緩慢な滑動を地すべり,急速に崩れ落ちるようにして滑動する現象を山崩れということも多い。…

※「debris slide」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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