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一个湍流谱的进一步研究
Alternative TitleFURTHER STUDY OF A TURBULENCE SPECTRUM
吴永富; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication空间科学学报
1998
Volume18Issue:4Pages:375-380
ISSN0254-6124
Language中文
Keyword风切变 湍流谱 饱和 大气湍流 火箭探测
Abstract一枚Chaff火箭在87.4km高度测量到高达0.33s^-1的风切变剖面,相信这个切变值是中层大气曾经测量到的最大切变值.在这个异常大风切变层内,垂直速度扰动谱在浮力子区,惯性子区,和粘性子区有谱斜率-3.10,-1.65,和-7.11,这个观测与中性密度扰动一致,计算的同尺度和浮力尺度与扰动谱中的崩溃点不一致,这个结果与中性密度扰动不一致,讨论了湍流和重力波之间的关系,结果表明,增强湍流与波场
Other AbstractA wind shear profile as high as 330s-1 at 87.4km was measured by a Chaff rocket.This wind shear is believed to be the largest value ever measured in the mesosphere.Spectrum of the vertical velocity fluctuations in the extremely large shear layer has spectral slopes of -3.10,-1.65 and -7.11 in the buoyancy subrange,the inertial subrange,and the viscous subrange respectively.This observation is in good agreement with the neutral density fluctuations.While the calculated inner scale and buoyancy scale do not agree with the breakpoints in the spectrum of the vertical velocity fluctuations.This result is not consistent with the neutral density fluctuations. The relationship between turbulence and gravity wave is studied.This result suggests that enhanced turbulence is linked well with wave Held saturation.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1450
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
吴永富,北京8701信箱. 一个湍流谱的进一步研究[J]. 空间科学学报,1998,18(4):375-380.
APA 吴永富,&北京8701信箱.(1998).一个湍流谱的进一步研究.空间科学学报,18(4),375-380.
MLA 吴永富,et al."一个湍流谱的进一步研究".空间科学学报 18.4(1998):375-380.
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