摘要
分析了北京地区6个气象观测站和距离北京较近的6个格点处的风速值,发现风场的分维数能反映相应的地面状况,它是对地面状况规律的一种量化方法.北京地区风速分维数的规律基本上是北高南低、西高东低,正反映了北京地区的地面状况特征.风速分维数可作为研究该地区土壤风蚀和风沙天气时反映近地面状况的一个参数.
The fractal dimension can reflect the corresponctmg ground state via the analysis of the wind from 6 meteorological stations in Belling area and 6 marginal points near to Beijing area. It is a good quantitative description for the surface state. The fractal dimension of wind velocity in northern Beijing is larger than that in southern Beijing and western than eastern. It iust shows that the rule of wind-field fractal dimension is the same as the real ground condition. The fractal dimensions of wind velocity can be used as a parameter for further studies on soil erosion and dust event weather.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第1期98-101,共4页
Journal of Beijing Normal University(Natural Science)
基金
北京市自然科学基金资助项目(40301025)
关键词
分形
分维数
风场
时间序列
地面状况
fractal
fractal dimension
wind-field
time series analysis
ground state
