Mesoscale field-aligned irregularity structures (FAIs) of airglow   associated with medium-scale traveling ionospheric disturbances (MSTIDs)

doi:10.1002/2014JA020944

CORC > 北京大学 > 地球与空间科学学院

	Mesoscale field-aligned irregularity structures (FAIs) of airglow associated with medium-scale traveling ionospheric disturbances (MSTIDs)
	Sun, Longchang ; Xu, Jiyao ; Wang, Wenbin ; Yue, Xinan ; Yuan, Wei ; Ning, Baiqi ; Zhang, Donghe ; de Meneses, F. C.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2015
关键词	MIDLATITUDE SPREAD-F STATISTICAL CHARACTERISTICS THERMOSPHERIC WINDS REGION IONOSPHERE PLASMA DEPLETIONS FRONT CAMPAIGN NORTHERN CHINA MILLSTONE-HILL MU RADAR IMAGES
DOI	10.1002/2014JA020944
英文摘要	In this paper, we report the evolution (generation, amplification, and dissipation) of optically observed mesoscale field-aligned irregularity structures (FAIs) (similar to 150 km) associated with a medium-scale traveling ionospheric disturbance (MSTID) event. There have not been observations of mesoscale FAIs of airglow before. The mesoscale FAIs were generated in an airglow-depleted front of southwestward propagating MSTIDs that were simultaneously observed by an all-sky imager, a GPS monitor, and a digisonde around Xinglong (40.4 degrees N, 30.5 degrees magnetic latitude), China, on 17/18 February 2012. A normalized cross-correlation method has been used to obtain the velocities of mesoscale FAIs and MSTIDs. The mesoscale FAIs had an obvious northwestward relative velocity to main-body MSTIDs (about 87.0 m/s on average). The direction of this relative velocity was roughly parallel to the depleted fronts. Furthermore, the evolution of the mesoscale FAIs was mostly controlled by the intensity of the depleted fronts. Occurred in a highly elevated ionosphere that had a total electron content depletion associated with large negative airglow perturbations (-25%), the mesoscale FAIs grew rapidly when they experienced southeastward wind, which had a speed of about 100 m/s and were measured by a Fabry-Perot interferometer. A northeastward polarization electric field within a depleted airglow front can play a controlling role in the development of the mesoscale FAIs. The electric field can significantly elevate the ionosphere and move the mesoscale FAIs northwestward by the E x B drift. The processes for the generation and development of the polarization electric field and the mesoscale FAIs, however, need further study.; National Natural Science Foundation of China [41331069, 41229001]; Chinese Academy of Sciences [KZZD-EW-01-2]; Chinese Meridian Project; Specialized Research Fund for State Key Laboratories; National Science Foundation; SCI(E); ARTICLE; lcsun@spaceweather.ac.cn; 11; 9839-9858; 120
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/439273]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Sun, Longchang,Xu, Jiyao,Wang, Wenbin,et al. Mesoscale field-aligned irregularity structures (FAIs) of airglow associated with medium-scale traveling ionospheric disturbances (MSTIDs)[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015.
APA	Sun, Longchang.,Xu, Jiyao.,Wang, Wenbin.,Yue, Xinan.,Yuan, Wei.,...&de Meneses, F. C..(2015).Mesoscale field-aligned irregularity structures (FAIs) of airglow associated with medium-scale traveling ionospheric disturbances (MSTIDs).JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS.
MLA	Sun, Longchang,et al."Mesoscale field-aligned irregularity structures (FAIs) of airglow associated with medium-scale traveling ionospheric disturbances (MSTIDs)".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2015).