Response of lightning energy and total electron content with sprites over Antarctic Peninsula

2017 International Conference on Space Science and Communication

物理学;无线电电子学

Suparta, W.^1 ; Yusop, N.^1

Space Science Centre (ANGKASA), Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi, Selangor

43600, Malaysia^1

关键词: Antarctic Peninsula;    Dc electric field;    Electrical coupling;    Geomagnetic activities;    Geomagnetic storm;    Lightning discharge;    Total electron content;    Transient luminous events;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/852/1/012020/pdf
DOI  :  10.1088/1742-6596/852/1/012020

来源: IOP

【 摘 要 】

This paper investigates the response of the lightning energy with the total electron content (TEC) derived from GPS over Antarctic Peninsula during St Patrick's geomagnetic storm. During this event, sprite as one of the mesospheric transient luminous events (TLEs) associated with positive cloud-to-ground (+CG) lightning discharges can be generated. In this work, GPS and lightning data for the period from 14 to 20 March 2015 is analyzed. Geomagnetic activity and electric field data are also processed to relate the geomagnetic storm and lightning. Results show that during St Patrick's geomagnetic storm, the lighting energy was produced up to ∼257 kJ. The ionospheric TEC was obtained 60 TECU, 38 TECU and 78 TECU between 18:00 and 21:00 UT for OHI3, PALV and ROTH stations, respectively. The peak of lightning energy was observed 14 hours after peaked of TEC. Sprite possibly generated through the electrical coupling process between the top cloud, middle and upper atmosphere with the DC electric field found to be ∼10 mVm-1which leading to the sprite generation after the return strokes on 18 March 2015.