Studies a new acoustic techniques for drifting snow measurement and its application to field observation

吹雪经常导致能见度低和雪花飘移，有时还会导致严重交通事故等灾难。然而，目前还没有廉价的适当的吹雪观测仪器。因此，吹雪的变化特征并不是很清楚。这项研究的目的是开发廉价的吹雪测量仪器。在实验室冷态实验中，利用声学传感器研究了传感器的输出与雪的质量流量之间的关系。结果表明，传感器的输出方差随积雪质量通量的增加而增大，表明声学传感器在吹雪观测中具有较高的效率。

Blowing snow often causes low visibility and snow drift and sometimes leads to a disaster such as a serious traffic accident. However, inexpensive proper instruments for blowing snow observation have not been available. Thus, the characteristics of blowing snow variation are not clarified. The purpose of this study is to develop inexpensive instruments for blowing snow measurements. Acoustic sensors were used to investigate the relationship between out-put from the sensor and mass flux of snow in cold laboratory experiments. The results showed that variance of out-put from the sensor increased with snow mass flux, which implies an efficiency of acoustic sensors for blowing snow observation.