Defining different type of CEJ currents based on ground-based geomagnetic data record at Langkawi station, Malaysia

N. I.M. Rosli, N. S.A. Hamid, M. Abdullah, A. Yoshikawa

Research output: Contribution to journalConference articlepeer-review

Abstract

A negative decrement in geomagnetic data in equatorial region is not necessarily cause by the well-known counter electrojet, CEJ but it is also can be affected by solar activity such as a solar flare. Relying on this matter, we did a comparison between CEJ and unusual solar flare effect called as SFE∗ on geomagnetic data before introducing several types of CEJ that can be extracted from EUEL index. This study used ground data from MAGDAS network located in Langkawi (LKW) with 1-minutes resolution during solar cycle 24 and applied EUEL index. From the results, it is crucial to ensure the minimum duration of EUEL depletion is within an hour because less than an hour depletion could be possibly cause by solar activity. Four interval of time that has been introduced in our study composed of several types of CEJ which are morning CEJ, afternoon CEJ and evening CEJ, with additional the controversial CEJ occurrence which is night CEJ. We also successfully demonstrated a rare CEJ occurrence that associated with solar flare effect using EUEL index.

Original languageEnglish
Article number012005
JournalJournal of Physics: Conference Series
Volume1768
Issue number1
DOIs
Publication statusPublished - Feb 9 2021
Event2nd International Conference on Space Weather and Satellite Application, ICeSSAT 2020 - Selangor, Virtual, Malaysia
Duration: Jul 7 2020 → …

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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