题名: |
ESTIMATION OF BLOWING SNOW AND RELATED VISIBILITY DISTRIBUTIONS ABOVE SNOW COVERS WITH DIFFERENT HARDNESS. |
作者: |
Sato-K; Kosugi-K; Sato-A |
关键词: |
Avalanches-; Disaster-preparedness; Forecasting-; Japan-; Meteorology-; Snowfall-; Snowstorms-; Traffic-accidents; Visibility-distance |
摘要: |
The mass flux and the related visibility distributions associated with blowing snow above the snow covers with different hardness are estimated based on the experimental and observational results on the blowing snow structure. The difference in the distributions between the loose and semihard snow covers is large under weak to moderate wind conditions and it becomes small as the wind speed increases. Traffic accidents and traffic jams are sometimes caused by snow drifts and poor visibility in snowy regions. In order to overcome the snow disasters, information systems based on meteorological observations and visibility monitoring are becoming popular. The Japanese National Research Institute for Earth Sciences and Disaster Prevention is conducting a project to predict snow disasters, such as snow avalanche, blowing snow, snow accretion and snow conditions on roads in a test area. Weather forecast, including snow fall as well as snow metamorphism forecast will be incorporated into the disaster prediction scheme. The present study is part of the project. |
总页数: |
Conference Title: 11th International Road Weather Conference. Location: Sapporo, Japan. Sponsored by: Standing International Road Weather Commission. Held: 20020126-20020128. 2002/01. pp8 |
报告类型: |
科技报告 |