Abstracts Details


First Name * : NURAIN
Abstract Type * : Poster
Title * : Analysis on the Correlation Between Geomagnetic Storm and Geomagnetic Induced Current (GIC) Caused by Coronal Mass Ejections (CMEs) Phenomena
Author(s) * : Nurain Mohamad Ansor, Zety Sharizat Hamidi, Nur Nafhatun Md Shariff
Abstract Session * : Solar flares and coronal mass ejections
Abstract * : A severe geomagnetic storm has made its way onto Earth’s magnetosphere on 8th September 2017 with recorded Kp-index of Kp 8+(G4), total interplanetary magnetic field (IMF) has reached 34 nt and maximum IMF Bz of -30 nT. This storm event might be the consequence of coronal mass ejection event that was happened a day before which means a stream of energetic plasma materials travelled one day before hitting on Earth’s magnetosphere. On this day, solar activity has been active for the past 24 hours with largest solar event of M8 flare produced by AR2673. Geomagnetic induced current (GIC) is induced when there’s a change in Earth’s magnetic field that can badly affect transmission power systems. GIC has a direct connection to the time derivative magnetic field, precisely on horizontal component (dH/dt). Therefore, this paper reviews an analysis on the storm event by analyzing geomagnetic indices data obtained from INTERMAGNET.org and OMNIWEB Service NASA and to observe the effect on geomagnetic induced current (GIC) by taking horizontal component time derivative magnetic field (dH/dt) as a based reference from 3 different stations. There is an influence on geomagnetic indices (AE and SYM-H) due to southward direction of Bz and the fluctuations in dH/dt is prominent during the peak of AE and SYM-H. It is also believed that during the storm, GIC was generated significantly at midnight and in the noon until late evening which corresponds to geomagnetic indices.