| 城市街渠大气湍流结构的小波分析 |
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| 引用本文： | 张明,王体健,金龙山,李宗恺. 城市街渠大气湍流结构的小波分析[J]. 气象科学, 2003, 23(2): 224-230 |
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| 作者姓名： | 张明 王体健 金龙山 李宗恺 |
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| 作者单位： | 南京大学中尺度灾害性天气教育部重点实验室,南京,210093 |
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| 基金项目： | 江苏省城市大气环境容量及总量控制对策研究项目资助 |
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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，发现噪声能量主要集中在高频处。
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| 关 键 词： | 小波分析 湍流 城市街渠 |
| 收稿时间： | 2002-07-03 |
| 修稿时间： | 2002-07-03 |
WAVELET TRANSFORMS AND THEIR APPLICATIONS TO TURBULENCE OF CITY STREET CANYONS |
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| Zhang Ming,Wang Tijian,Jin Lonhshan and Li Zongkai. WAVELET TRANSFORMS AND THEIR APPLICATIONS TO TURBULENCE OF CITY STREET CANYONS[J]. Journal of the Meteorological Sciences, 2003, 23(2): 224-230 |
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| Authors: | Zhang Ming Wang Tijian Jin Lonhshan Li Zongkai |
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| Abstract: | 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. |
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| Keywords: | Wavelet transform Turbulence Street canyons |
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