Evidence for simultaneous occurrence of periodic and single dark band MSTIDs over geomagnetic low-mid latitude transition region

被引：12
|
作者：
Rathi, R. [1 ]
Yadav, V [1 ,3 ]
Mondal, S. [1 ]
Sarkhel, S. [1 ]
Krishna, M. V. Sunil [1 ]
Upadhayaya, A. K. [2 ]
机构：
[1] Indian Inst Technol Roorkee, Dept Phys, Roorkee 247667, Uttar Pradesh, India
[2] CSIR Natl Phys Lab, Environm Sci & Biomed Metrol Div, New Delhi, India
[3] Aryabhatta Res Inst Observat Sci, Naini Tal 263001, Uttarakhand, India
来源：
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2021年 / 215卷
关键词：
Medium scale travelling ionospheric disturbances (MSTIDs); O(D-1) 630.0 nm Airglow emission; Perkins instability; E-F Coupling;
D O I：
10.1016/j.jastp.2021.105588
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We report a unique simultaneous occurrence of two plasma structures using a 630.0 nm all-sky airglow imager in Hanle, India. The characteristics indicate that the observed structures are Medium Scale Travelling Ionospheric Disturbances (MSTIDs) of different types, namely periodic and single dark band. Based on previous understandings of Perkins instability, we explore the role of polarization electric field within MSTIDs using complementary observations from a nearby digisonde. We propose that the MSTIDs involve different seeding processes. This study provides crucial information in elucidating the generation of MSTIDs and helps in understanding the F-region electrodynamics over geomagnetic low-mid latitude transition region.
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收藏
页数：7
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