The terminal velocity of snowflakes
The terminal velocity of snowflakes
复制标题
雪花的终端速度
DOI：
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发表时间：
1954
期刊：
影响因子：
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通讯作者：
M. P. Langleben
中科院分区：
文献类型：
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作者：
M. P. Langleben
在地面上对聚集雪花的终端速度的测量表明，该速度大约与质量的十分之一次方成正比。比例常数取决于聚集体中的基本晶体类型。此外，它大大增加了霜或轻微融化的雪花。
当雪生长显着在一个生成的水平，从雷达观测确定的雪粒子的下降速率被发现对应于聚合物的速度。因此推断，聚集可以在远低于凝固点的温度下发生。
Measurements of the terminal velocity of aggregate snowflakes at the ground indicate that the velocity is approximately proportional to the one-tenth power of the mass. The constant of proportionality is dependent on the basic crystal types in the aggregates. It is moreover greatly increased by riming or by slight melting of the snowflakes.
When snow grows markedly at a generating level, the rate of fall of the snow particles as determined from radar observations is found to correspond to the velocities of aggregates. It is thus inferred that aggregation can occur at temperatures far below the freezing point.