Model of the influence of snow cover on soil freezing

被引：8
|
作者：
Osokin, NI [1 ]
Samoylov, RS [1 ]
Sosnovskiy, AV [1 ]
Sokratov, SA [1 ]
Zhidkov, VA [1 ]
机构：
[1] Russian Acad Sci, Inst Geog, Moscow 109017, Russia
来源：
ANNALS OF GLACIOLOGY, VOL 31, 2000 | 2000年 / 31卷
关键词：
D O I：
10.3189/172756400781820282
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
A mathematical model of snow-cover influence on soil freezing, taking into account the phase transition layer, water migration in soil, frost heave and ice-layer formation, has been developed. The modeled results are in good agreement with data observed in natural conditions. The influence of a possible delay between the time of negative temperature establishment in the air and the beginning of snow accumulation, and possible variations of the thermaphysical properties of snow cover in the wide range previously reported were investigated by numerical experiments. It was found that the delay could change the frozen-soil depth up to 2-3 times, while different thermophysical characteristics of snow changed the resulting freezing depth 4-5 times.
引用
收藏
页码：417 / 421
页数：5
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