WordNet
- receive stolen goods
- a barrier that serves to enclose an area (同)fencing
- a dealer in stolen property
- enclose with a fence; "we fenced in our yard" (同)fence in
- fight with fencing swords
- fall as snow; "It was snowing all night"
- precipitation falling from clouds in the form of ice crystals (同)snowfall
- a layer of snowflakes (white crystals of frozen water) covering the ground
- the art or sport of fighting with swords (especially the use of foils or epees or sabres to score points under a set of rules)
- English writer of novels about moral dilemmas in academe (1905-1980) (同)C. P. Snow, Charles Percy Snow, Baron Snow of Leicester
- 100 fen equal 1 yuan in China
PrepTutorEJDIC
- 雪さく,雪よけ
- 〈C〉(通例,木材・鉄線・針金などでできた)『囲い』,垣根,柵(さく),へい / 〈U〉剣術,フェシング(fencing) / 〈C〉《話》(盗品を買い受ける)故買人 / 〈土地など〉‘を'柵(へい)で囲う;~‘を'柵(へい)で仕切る / 《話》〈盗品〉‘を'買い受ける / 剣を仕う,フェシングをする / (質問などを)受け流す《+『with』+『名』》
- 〈U〉『雪』 / 〈C〉《単数形で》『降雪』;《複数形で》積雪 / 〈U〉〈C〉雪のような物;(特に)コカイン,ヘロイン / 《itを主語にして》『雪が降る』 / (…に)雪のように降る《+『on』+『名』》;雪のように舞い込む《+『in』》 / …‘を'雪のように降らせる / …‘を'雪でおおう(閉じ込める)《+『名』+『in』(『under, up』)》
- フェンシング,剣術 / 垣根(柵(さく))の材料;《集合的に》垣根,柵
- 沼地,沼沢地,湿地帯
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/02/19 21:51:20」(JST)
[Wiki en表示]
For other types of snow barrier devices, see snow barrier (disambiguation).
Portable snow fences in Austria.
A snow fence, similar to a sand fence, is a type of fence that forces windblown, drifting snow to accumulate in a desired place. They are primarily employed to minimize the amount of snowdrift on roadways and railways. Farmers and ranchers use snow fences to create drifts in basins for a ready supply of water in the spring.[1] Ski resorts also use snow fences in order to increase snow depth in specified areas, or for avalanche control.
Temporary snow fences are usually one of two varieties: perforated orange plastic sheeting attached to stakes at regular intervals (the type usually used for construction site fencing or temporary sports field fencing), or a cedar or other lightweight wood strip and wire fence, also attached to metal stakes. A permanent snow fence usually consists of poles with horizontal planks running across them so that they cover just over one-half of the total fence area. The bottom 10% to 15% of the fence should be left open so that snow does not settle directly under the fence, which would reduce its effective height. Taller fences trap more snow. Taking the height of the fence as one unit, it should be placed thirty-five units or more to windward of the road or building that it is meant to protect.[2] Permanent snow fences can also consist of lines of closely spaced shrubs, conifer trees or maize stalks.[3][4]
Snow fences work by causing turbulence in the wind, such that it drops much of its snow load on the lee side of the fence. Thus, snow fences actually cause snow drifts, rather than preventing them. The fences are placed so as to cause a snow drift where it is beneficial, or not harmful so that the snow does not drift onto undesired areas such as roads or among buildings.
See also
- Snow shed, which is designed so that snow collects on top
- Snow guard, a device attached to roofs to prevent snow from falling on people below
References
- ^ Yarotski, Jim (31 December 2003). "Snow Fences Can Benefit Farm Water Supplies". Prairie Water News (Regina, Saskatchewan). Retrieved 14 November 2014.
- ^ Tabler, Ronald (October 1991). Snow Fence Guide. Washington, DC: National Research Council. p. 76.
- ^ "Living Snow Fences: Functions and Benefits". University of Minnesota. 2011. Retrieved 14 November 2014.
- ^ Nixon, Wilfrid; Davison, Megan; Kochumman, George (November 2006), Living Snow Fences, University of Iowa, retrieved 14 November 2014
External links
|
Wikimedia Commons has media related to Snow fences. |
- "Effective Snow Fences" on YouTube
- "What’s That Thing: Roadside Fence Edition", by Mark Vanhoenacker, Slate, Aug. 1, 2013
UpToDate Contents
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English Journal
- Snow cover and extreme winter warming events control flower abundance of some, but not all species in high arctic Svalbard.
- Semenchuk PR1, Elberling B2, Cooper EJ3.
- Ecology and evolution.Ecol Evol.2013 Aug;3(8):2586-99. doi: 10.1002/ece3.648. Epub 2013 Jun 29.
- The High Arctic winter is expected to be altered through ongoing and future climate change. Winter precipitation and snow depth are projected to increase and melt out dates change accordingly. Also, snow cover and depth will play an important role in protecting plant canopy from increasingly more fr
- PMID 24567826
- Shade material evaluation using a cattle response model and meteorological instrumentation.
- Eigenberg RA1, Brown-Brandl TM, Nienaber JA.
- International journal of biometeorology.Int J Biometeorol.2010 Nov 9. [Epub ahead of print]
- Shade structures are often considered as one method of reducing stress in feedlot cattle. Selection of a suitable shade material can be difficult without data that quantify material effectiveness for stress reduction. A summer study was conducted during 2007 using instrumented shade structures in co
- PMID 21061024
- Shade material evaluation using a cattle response model and meteorological instrumentation.
- Eigenberg RA1, Brown-Brandl TM, Nienaber JA.
- International journal of biometeorology.Int J Biometeorol.2010 Sep;54(5):509-15. doi: 10.1007/s00484-010-0343-z. Epub 2010 Jul 27.
- Shade structures are often considered as one method of reducing stress in feedlot cattle. Selection of a suitable shade material can be difficult without data that quantify material effectiveness for stress reduction. A summer study was conducted during 2007 using instrumented shade structures in co
- PMID 20661597
Japanese Journal
- 20047 人工降雪装置を用いたネットフェンスの雪庇形成実験(雪荷重・耐雪設計(1),構造I,2014年度日本建築学会大会(近畿)学術講演会・建築デザイン発表会)
- 防雪施設の規模の変遷についての一考察 : 国道17号湯沢地区に建設された雪崩予防柵と雪崩防護柵のデータから
- 昭和基地におけるスノウドリフト軽減のために実施した雪対策
- 石沢 賢二,イシザワ ケンジ,Kenji Ishizawa
- 南極資料 58(1), 52-70, 2014-03-31
- … 観測小屋や大型大気レーダー小屋でも除雪の労力は大幅に減った.さらに,基地燃料ポンプ小屋とプロパンボンベ庫ドア前のスノウドリフト付着は最小限に食い止められた.見晴らし道路除雪後のスノウドリフトもほとんどなく,再度除雪することはなかった.Snow controls were employed to reduce snow drifts around buildings and a main road during the period of the 53rd Japanese Antarctic Research Expedition (JARE-53) wintering party at Syowa …
- NAID 120005510664
Related Links
- A snow fence is a type of fence, similar to a sand fence, that forces drifting snow to accumulate in a desired place. They are primarily employed to minimize the amount of snowdrift on roadways and railways. Farmers and ranchers may use ...