Anisotropy of the horizontal velocity fluctuation field in the large wavenumber region

	Anisotropy of the horizontal velocity fluctuation field in the large wavenumber region
	Wu, Y. F. ; Xu, J. Y.
刊名	Science in China Series D-Earth Sciences
	2003
卷号	46 期号:3 页码:210-216
关键词	velocity fluctuation spectra forked point anisotropy large wavenumber gravity-wave spectrum middle atmosphere universal spectrum mac epsilon foil chaff mesosphere stratosphere saturation summer turbulence
ISSN号	1006-9313
通讯作者	北京8701信箱
英文摘要	This paper utilizes meridional and zonal velocity data measured by chaff rockets at a high resolution of 25 m in the 67-96 km region during the MAC/SINE campaign to study the characteristics of the spectra of the meridional and zonal velocity fluctuations. Results suggest that(.)the mean vertical wavenumber spectra have a forked point near vertical wavenumber k = 0.001 m(-1). In the vertical wavenumber region smaller than the forked point, the spectra of: the meridional and zonal velocities have approximately the same spectral slope, amplitude, and characteristic vertical wavelength, and agree well with the linear saturated spectral model. In the vertical wavenumber region larger than the forked point, however, the meridional and zonal spectra are inconsistent not only in both slope and amplitude, but also in spectral structure. The differences between the observed meridional and zonal spectra provide observational evidence of azimuthal anisotropy of the velocity fluctuation field in the large vertical wavenumber region in mean sense.
学科主题	空间物理
收录类别	SCI
原文出处	://000181672200003
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1013]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Wu, Y. F.,Xu, J. Y.. Anisotropy of the horizontal velocity fluctuation field in the large wavenumber region[J]. Science in China Series D-Earth Sciences,2003,46(3):210-216.
APA	Wu, Y. F.,&Xu, J. Y..(2003).Anisotropy of the horizontal velocity fluctuation field in the large wavenumber region.Science in China Series D-Earth Sciences,46(3),210-216.
MLA	Wu, Y. F.,et al."Anisotropy of the horizontal velocity fluctuation field in the large wavenumber region".Science in China Series D-Earth Sciences 46.3(2003):210-216.