Depth - hoar growth rates near a rocky outcrop
نویسندگان
چکیده
Observations of slab-a\'alanche releases in alpine terrain ha\'e led to the hypothesis that rocky outcrops can influence thc spatial distributions of temperature and heat flow in dry alpine snow covers and thus c011lrol the local distribution of de pth hoar. \ Vc investigate the effects of terrain on crystal growth by using a two-dimensional finite element model of heat flow coupled with a model of crystal growth from vapor. We used the model to examine the influence of snow properties, terrain geometry and snow depth on this phenomenon. The effect is stronger in the early winter than in the late winter, because the rock has then had time to cool. In all cases, wc found that depth-hoar growth occurs preferentially O\'er the rock. This suggests that snow-pit im'Cstigations made over soil can be m isleading if rocky outcrops are present.
منابع مشابه
Depth - hoar growth rates near a rocky outcrop
ObseJ'\'ati o ns o f sla b-m'a lanc h e releases in a lpin e te rra in hm'C led to th e hyp othesis t h a t roc ky o utcrop s ca n influence t he sp a ti a l d istri buti o n s o f tem perat ure a nd h eat fl ow in dry a lp ine snow co\'Crs a n d th us cont rol the local d i. t r ib uti on of de pth h oar. \ Vc inves ti gate th e efre cts or te rra in o n c rysta l g ro wth by usi ng a two-cl i...
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