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

吹雪经常造成能见度低和积雪漂移，有时会导致严重的交通事故等灾难。然而，还没有廉价的合适的吹雪观测仪器。因此，吹雪变化的特征并不清楚。本研究的目的是开发廉价的仪器，用于吹雪测量。利用声学传感器研究了传感器输出信号与雪质量通量之间的关系。结果表明，传感器输出的方差随着雪质量通量的增加而增加，这意味着声学传感器对吹雪观测的有效性。

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.