采用滤纸色斑法对雨滴直径的研究

Research on Raindrop Diameter Based on Filter Paper Splash Procedure

滤纸色斑法是一种雨滴粒径测量方法,应用广泛,操作简单,成本低廉.文中采用滤纸色斑法研究不同水滴高度对色斑直径的影响和率定水滴直径与色斑直径间的关系.研究结果表明,雨滴高度对色斑直径有一定影响,率定色斑直径和雨滴直径的关系为d=0.478D0.610.从房县地区实测的滤纸色斑数据计算得到,雨滴动能与降雨强度成正相关,以此作为研究水土流失量的基础.

Filter paper splash procedure is a kind of measuring means to raindrop size. It is used widely and operated briefly and its cost is low. The article mainly introduces the influence of different heights to the stain diameter and the relationship between stain diameter and the raindrop＇s. According to the experiment, the relation between the stain diameter and the raindrop＇s is d= 0. 478D^0.610. It is the research foundation of filter paper stain method. According to the data from Fangxian area using the method of filter paper splash procedure, it can be concluded that the raindrop kinetie energy has a positive relationship with rainfall intensity. The research is useful for measuring the water and soil loss.