Preprints
https://doi.org/10.5194/npg-2021-23
https://doi.org/10.5194/npg-2021-23

  29 Jun 2021

29 Jun 2021

Review status: this preprint has been withdrawn by the authors.

Investigation on the characteristics of the South Atlantic Anomaly

Khairul Afifi Nasuddin1, Mardina Abdullah1,2, and Nurul Shazana Abdul Hamid3 Khairul Afifi Nasuddin et al.
  • 1Department of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, 43600, Malaysia
  • 2Space Science Center (ANGKASA), Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi, 43600, Malaysia
  • 3Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Malaysia

Abstract. The South Atlantic Anomaly (SAA) is known for its weak Earth’s magnetic field strength. In this research, power spectrum analysis method was applied on the Horizontal intensity of the Earth’s magnetic field with data sample rate used at 1 min. Four active periods on 18 March 2012, 10 March 2012, 25 April 2012, and 30 June 2013 which represent the occurrence of geomagnetic storms and 4 normal periods on 25 March 2012, 21 March 2012, 4 April 2012, and 15 June 2013 which indicate no geomagnetic storm event were examined. Research was conducted by analyzing the SAA region where comparisons were made between the middle latitude region and the high latitude region. The results indicate that the SAA region tends to be persistent, and this may be due to the ring current. The middle latitude region experienced a mixture of persistent and antipersistent characteristics and this may be due to the transportation of plasma and seasonal weather variations. The high latitude region tends to be antipersistent. This may indicate that the high latitude region is influenced by geomagnetic storms and the aurora.

This preprint has been withdrawn.

Khairul Afifi Nasuddin et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on npg-2021-23', Anonymous Referee #1, 29 Jul 2021
    • AC1: 'Reply on RC1', Khairul Afifi Nasuddin, 05 Oct 2021
  • RC2: 'Comment on npg-2021-23', Anonymous Referee #2, 19 Aug 2021
    • AC2: 'Reply on RC2', Khairul Afifi Nasuddin, 05 Oct 2021

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on npg-2021-23', Anonymous Referee #1, 29 Jul 2021
    • AC1: 'Reply on RC1', Khairul Afifi Nasuddin, 05 Oct 2021
  • RC2: 'Comment on npg-2021-23', Anonymous Referee #2, 19 Aug 2021
    • AC2: 'Reply on RC2', Khairul Afifi Nasuddin, 05 Oct 2021

Khairul Afifi Nasuddin et al.

Khairul Afifi Nasuddin et al.

Viewed

Total article views: 647 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
575 62 10 647 4 6
  • HTML: 575
  • PDF: 62
  • XML: 10
  • Total: 647
  • BibTeX: 4
  • EndNote: 6
Views and downloads (calculated since 29 Jun 2021)
Cumulative views and downloads (calculated since 29 Jun 2021)

Viewed (geographical distribution)

Total article views: 615 (including HTML, PDF, and XML) Thereof 615 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 20 Oct 2021
Download

This preprint has been withdrawn.

Short summary
In this research, the South Atlantic Anomaly (SAA), the middle latitude and the high latitude region is analyzed. The method apply is using power spectrum analysis method and 4 active period (Period during occurrence of geomagnetic storm) and 4 normal period (Period during no occurrence of geomagnetic storm) is examine. The result indicate SAA region tend to be persistent during both period in comparison to other region in this research. The SAA region may be influence by the ring current.