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

声学流雪测量新技术及其在野外观测中的应用研究

• 批准号: 19510195
• 负责人: KOSUGI Kenji
• 金额: $ 2.83万
• 依托单位: National Research Institute for Earth Science and Disaster Prevention
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19510195/
• 关键词: 吹雪; 自然災害; 防災; 自然現象観測・予測; 風洞実験; 計測

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.

吹雪经常造成能见度低和积雪漂移，有时还会导致严重的交通事故等灾难。但是，还没有廉价的适当的吹雪观测仪器。因此，吹雪变化的特征不明确。本研究的目的是开发廉价的吹雪测量仪器。在低温室内实验中，利用声传感器研究了传感器输出与雪质量通量的关系。结果表明，声传感器输出的方差随雪量的增加而增大，表明声传感器在吹雪观测中的有效性。