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Alternative TitleShear Rate Determination of Flow Near Magnetopause
李凌寒; 陈涛; 北京8701信箱
Source Publication空间科学学报
Keyword磁层顶 等离子体流 剪切度
Other AbstractShear rate of flow near magnetopause is related to the degree of energy transfer near magnetopause.Many numerical simulations near magnetopause have to use shear rate of flow as an important input parameter.However,up to now it is still by pothetical and not realistic.By simultaneous multipoint observations of Cluster,using methods of linear interpolation and barycen-tric coordinates, we have determined shear rate of flow near magnetopause, an observational spatial parameter that can not be obtained until Cluster. Observational spatial distribution of shear rate of flow at dawn side and dusk side of magnetopause, magnetosphere and magnetosheath nearby has been analysed,Data analysis demonstrates that shear rate of flow as large as velocity difference of 330 km/s over the distance of 100 km can exist near magnetopause sometimes even under quiet solar wind and geomagnetic conditions.Under many circumstances shear rate of flow near magnetopause is small, with the spatial velocity difference of dozens of km/s over the distance of 1000 km.The method we have adopted here can be used widely to determine shear rate of flow at any location.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
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Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
李凌寒,陈涛,北京8701信箱. 磁层顶附近流场剪切度的确定[J]. 空间科学学报,2008,28(4):273-282.
APA 李凌寒,陈涛,&北京8701信箱.(2008).磁层顶附近流场剪切度的确定.空间科学学报,28(4),273-282.
MLA 李凌寒,et al."磁层顶附近流场剪切度的确定".空间科学学报 28.4(2008):273-282.
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