一个湍流谱的进一步研究
吴永富
刊名空间科学学报
1998
卷号18期号:4页码:375-380
关键词风切变 湍流谱 饱和 大气湍流 火箭探测
ISSN号0254-6124
其他题名FURTHER STUDY OF A TURBULENCE SPECTRUM
通讯作者北京8701信箱
中文摘要一枚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
英文摘要A 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.
学科主题空间物理
收录类别CSCD
资助信息国家自然科学基金和中国科学院日球物理数值开放研究实验室资助
语种中文
CSCD记录号CSCD:449681
内容类型期刊论文
源URL[http://ir.cssar.ac.cn/handle/122/1450]  
专题国家空间科学中心_空间科学部
推荐引用方式
GB/T 7714
吴永富. 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.(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."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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