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城市街渠大气湍流结构的小波分析 被引量：4

WAVELET TRANSFORMS AND THEIR APPLICATIONS TO TURBULENCE OF CITY STREET CANYONS
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摘要 利用小波分析方法对城市街渠大气湍流场特征进行了初步研究 ,发现小波变换能够很好地揭示湍流的串级结构和多尺度结构。结合Fourier分析对湍流中不同尺度涡旋对能量的贡献进行了比较 。 Wavelet transforms were used to the primary study on the turbulence characteristics of urban street canyons.It was found that wavelet transform performs well in turbulence cascade structure and multi-resolution analysis.Through Fourier analysis,contributions of different scale turbulence to turbulence energy were compared,and it was found that noise energy concentrated on high frequency band.
作者 张明 王体健 金龙山 李宗恺
机构地区 南京大学中尺度灾害性天气教育部重点实验室
出处 《气象科学》 CSCD 北大核心 2003年第2期224-230,共7页 Journal of the Meteorological Sciences
基金 江苏省城市大气环境容量及总量控制对策研究项目资助
关键词 小波分析 湍流 城市街渠 Wavelet transform Turbulence Street canyons
分类号 P425.2 [天文地球—大气科学及气象学]
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参考文献9

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二级参考文献3

共引文献14

同被引文献36

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引证文献4

二级引证文献10

气象科学
2003年 第2期

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