Response of the equatorial and low-latitude ionosphere over the West Pacific Ocean Sector to an X1.2 solar flare on 15 May 2013

Wednesday, 13 February 2019
Fountain III/IV (Westin Pasadena)
Tian Mao, National Satellite Meteorological Centre, Beijing, China, Lingfeng Sun, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, Yungang Wang, National Satellite Meteorological Center, Beijing, China, Chengli She, Institude of Geology and Geophysics, Chinese Academy of Sciences, Earth and Planet Physics, Beijing, China, Bo Xiong, School of Mathematics and Physics, North China Electric Power University, Baoding, China and Lianhuan Hu, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China, Beijing, China
Abstract:
On the basis of multiple observations of ionosondes, meteor radars, magnetometers and GNSS receivers, we present the response of the equatorial and low latitude ionosphere over the West Pacific Ocean Sector to an X1.2 solar flare that peaked at 1:48 UT on 15 May 2013. The geomagnetic H component observations indicate the equatorial electrojet strength over the East Asia region is obviously enhancement during the flare. After the end time of solar flare, the ionosonde observations at Guam, an ionosonde station near the geomagnetic equatorial region, show the decrease of the peak height of ionospheric F2 layer which is related with the decrease of the eastward electric field. Simultaneous strong southern wind is observed by meteor radar over Sanya, a geomagnetic low latitude station, which probably product the westward dynamo electric field and further result in the decrease of vertical drift velocity over the geomagnetic equatorial region. In addition, GNSS total electron content (TEC) observations from six stations in the researching region show the TEC enhancement only appears nearby the geomagnetic equator region.
<< Previous Abstract | Next Abstract >>