翻訳と辞書
Words near each other
・ Tree Topper
・ Tree topping
・ Tree traversal
・ Tree Trunk
・ Tree trunk spider
・ Tree Trunks (Adventure Time)
・ Tree tunnel
・ Tree tyer
・ Tree Vibez Music
・ Tree view
・ Tree viper
・ Tree vole
・ Tree volume measurement
・ Tree walking automaton
・ Tree warbler
Tree well
・ Tree weta
・ Tree Without Leaves
・ Tree's a Crowd
・ Tree, Swallows, Houses
・ Tree-adjoining grammar
・ Tree-athlon
・ Tree-class trawler
・ Tree-depth
・ Tree-free paper
・ Tree-graded space
・ Tree-in-bud sign
・ Tree-kangaroo
・ TREE-META
・ Tree-topper


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Tree well : ウィキペディア英語版
Tree well

A tree well is a void or area of loose snow around the trunk of a tree enveloped in deep snow. Also known as "spruce traps", these voids present danger to hikers, snowshoers, skiers, and snowboarders who fall into them.
==Formation==
A tree's branches shelter its trunk from snowfall, allowing a void or area of loose snow to form. Low-hanging branches as on small firs further contribute to forming a tree well, as they efficiently shelter the area surrounding the trunk. Such wells have been observed as deep as 20 feet.〔(【引用サイトリンク】 accessdate=2014-12-07 )〕 They can also occur near rocks and along streams.
Tree wells may be encountered in backcountry, on ungroomed trails, off-piste, and on ungroomed/piste boundaries. The risk of encountering one is greatest during and immediately following a heavy snowstorm.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Tree well」の詳細全文を読む



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