Author:
Nasuddin Khairul Afifi,Abdullah Mardina,Abdul Hamid Nurul Shazana
Abstract
Abstract. This research intends to
characterize the South Atlantic Anomaly (SAA) by applying the power spectrum
analysis approach. The motivation to study the SAA region is due to its
nature. A comparison was made between the stations in the SAA region and
outside the SAA region during the geomagnetic storm occurrence (active
period) and the normal period where no geomagnetic storm occurred. The
horizontal component of the data of the Earth's magnetic
field for the occurrence of the active
period was taken on 11 March 2011 while for the normal period it was taken on
3 February 2011. The data sample rate used is 1 min. The outcome of the
research revealed that the SAA region had a tendency to be persistent during
both periods. It can be said that the region experiences these
characteristics because of the Earth's magnetic field strength. Through the
research, it is found that as the Earth's magnetic field increases, it is
likely to show an antipersistent value. This is found in the high-latitude
region. The lower the Earth's magnetic field, the more it shows the
persistent value as in the middle latitude region. In the region where the
Earth's magnetic field is very low like the SAA region it shows a tendency to
be persistent.
Cited by
10 articles.
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