JpGU-AGU Joint Meeting 2020

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Yue Deng(University of Texas at Arlington), Loren Chang(Institute of Space Science, National Central University)

[PEM12-27] Longitudinal Variation and Peak Time of Equatorial Electrojet Current from Ground and Satellite Measurements

*Nurul Shazana Abdul Hamid1, Wan Nur Izzaty Ismail1, Mardina Abdullah1, Akimasa Yoshikawa2, Teiji Uozumi2, Zahira Mohd Razi3 (1.Universiti Kebangsaan Malaysia, 2.Kyushu University, 3.Malaysia Space Agency)

In this study, we presented the variability of equatorial electrojet (EEJ) current examined using data measured by ground stations and satellite magnetometers during quiet days in different solar activity levels. Two main focus here are the EEJ’s longitudinal profile and its peak time. We have evaluated both ground and satellite data using linear regression method before categorized them into different solar activity levels: low, moderate and high. A good agreement of EEJ longitudinal profile between both measurements appear during low solar activity with a high correlation coefficient is observed in the Southeast Asian sector. Apart from that, our analysis demonstrated that the seasonal dependence of EEJ’s peak time reported by previous studies were only reflected at certain longitude sectors.