Perubahan Sistem Arus Ionosfera di Kawasan Asia Tenggara semasa Ribut Geomagnet pada Fasa Suria Minimum

Translated title of the contribution: Changes in ionospheric currents system at southeast Asia region during geomagnetic storm in solar's minimum phase

Nurul Shazana Abdul Hamid, Viksuthorn Ai Wen, Nur Izzati Mohd Rosli, Akimasa Yoshikawa

Research output: Contribution to journalArticle

Abstract

Equatorial ionospheric current system consists of equatorial electrojet (EEJ) and solar quiet (Sq). EEJ current is a ribbon of current flowing eastwards along the dip equator region. On the other hand, Sq current is a loop of current that flows at the Earth's northern and southern hemispheres in different directions. This study is focusing on analysing the effects of a solar event on the latitudinal profile of the current system, specifically in Southeast Asian region. Data used in this study are geomagnetic data from five magnetometer stations in MAGDAS network which are Muntinlupa (MUT), Cebu (CEB), Davao (DAV), Manado (MND) and Pare Pare (PRP). The EEJ current intensity is known to be highest around noon time between 1000 and 1100 LT during solar minimum and thus this study analyses the current system from 1000 to 1400 LT. The analysis showed that the geomagnetic storm occurred on 23 April 2008, which is caused by coronal mass ejection (CME), gives rises to the currents on that day. This increment is clearly observed on the currents at the southern hemisphere stations, which are MND and PRP. Our analysis also found that this geomagnetic storm gives increment to the current at the non-peak time. Apart from that, the current profile on this day is compared with the current profile from a quiet day on 21 April 2008.

Original languageMalay
Pages (from-to)1923-1929
Number of pages7
JournalSains Malaysiana
Volume47
Issue number8
DOIs
Publication statusPublished - 1 Aug 2018

Fingerprint

geomagnetic storm
electrojet
Southern Hemisphere
coronal mass ejection
magnetometer
dip
Northern Hemisphere
Southeast Asia
analysis
station

ASJC Scopus subject areas

  • General

Cite this

Perubahan Sistem Arus Ionosfera di Kawasan Asia Tenggara semasa Ribut Geomagnet pada Fasa Suria Minimum. / Abdul Hamid, Nurul Shazana; Wen, Viksuthorn Ai; Rosli, Nur Izzati Mohd; Yoshikawa, Akimasa.

In: Sains Malaysiana, Vol. 47, No. 8, 01.08.2018, p. 1923-1929.

Research output: Contribution to journalArticle

Abdul Hamid, Nurul Shazana ; Wen, Viksuthorn Ai ; Rosli, Nur Izzati Mohd ; Yoshikawa, Akimasa. / Perubahan Sistem Arus Ionosfera di Kawasan Asia Tenggara semasa Ribut Geomagnet pada Fasa Suria Minimum. In: Sains Malaysiana. 2018 ; Vol. 47, No. 8. pp. 1923-1929.
@article{f0c58b2d157f47b48b3b41062d725ca9,
title = "Perubahan Sistem Arus Ionosfera di Kawasan Asia Tenggara semasa Ribut Geomagnet pada Fasa Suria Minimum",
abstract = "Equatorial ionospheric current system consists of equatorial electrojet (EEJ) and solar quiet (Sq). EEJ current is a ribbon of current flowing eastwards along the dip equator region. On the other hand, Sq current is a loop of current that flows at the Earth's northern and southern hemispheres in different directions. This study is focusing on analysing the effects of a solar event on the latitudinal profile of the current system, specifically in Southeast Asian region. Data used in this study are geomagnetic data from five magnetometer stations in MAGDAS network which are Muntinlupa (MUT), Cebu (CEB), Davao (DAV), Manado (MND) and Pare Pare (PRP). The EEJ current intensity is known to be highest around noon time between 1000 and 1100 LT during solar minimum and thus this study analyses the current system from 1000 to 1400 LT. The analysis showed that the geomagnetic storm occurred on 23 April 2008, which is caused by coronal mass ejection (CME), gives rises to the currents on that day. This increment is clearly observed on the currents at the southern hemisphere stations, which are MND and PRP. Our analysis also found that this geomagnetic storm gives increment to the current at the non-peak time. Apart from that, the current profile on this day is compared with the current profile from a quiet day on 21 April 2008.",
keywords = "EEJ, Ionospheric current system, Solar event, Sq",
author = "{Abdul Hamid}, {Nurul Shazana} and Wen, {Viksuthorn Ai} and Rosli, {Nur Izzati Mohd} and Akimasa Yoshikawa",
year = "2018",
month = "8",
day = "1",
doi = "10.17576/jsm-2018-4708-34",
language = "Malay",
volume = "47",
pages = "1923--1929",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
number = "8",

}

TY - JOUR

T1 - Perubahan Sistem Arus Ionosfera di Kawasan Asia Tenggara semasa Ribut Geomagnet pada Fasa Suria Minimum

AU - Abdul Hamid, Nurul Shazana

AU - Wen, Viksuthorn Ai

AU - Rosli, Nur Izzati Mohd

AU - Yoshikawa, Akimasa

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Equatorial ionospheric current system consists of equatorial electrojet (EEJ) and solar quiet (Sq). EEJ current is a ribbon of current flowing eastwards along the dip equator region. On the other hand, Sq current is a loop of current that flows at the Earth's northern and southern hemispheres in different directions. This study is focusing on analysing the effects of a solar event on the latitudinal profile of the current system, specifically in Southeast Asian region. Data used in this study are geomagnetic data from five magnetometer stations in MAGDAS network which are Muntinlupa (MUT), Cebu (CEB), Davao (DAV), Manado (MND) and Pare Pare (PRP). The EEJ current intensity is known to be highest around noon time between 1000 and 1100 LT during solar minimum and thus this study analyses the current system from 1000 to 1400 LT. The analysis showed that the geomagnetic storm occurred on 23 April 2008, which is caused by coronal mass ejection (CME), gives rises to the currents on that day. This increment is clearly observed on the currents at the southern hemisphere stations, which are MND and PRP. Our analysis also found that this geomagnetic storm gives increment to the current at the non-peak time. Apart from that, the current profile on this day is compared with the current profile from a quiet day on 21 April 2008.

AB - Equatorial ionospheric current system consists of equatorial electrojet (EEJ) and solar quiet (Sq). EEJ current is a ribbon of current flowing eastwards along the dip equator region. On the other hand, Sq current is a loop of current that flows at the Earth's northern and southern hemispheres in different directions. This study is focusing on analysing the effects of a solar event on the latitudinal profile of the current system, specifically in Southeast Asian region. Data used in this study are geomagnetic data from five magnetometer stations in MAGDAS network which are Muntinlupa (MUT), Cebu (CEB), Davao (DAV), Manado (MND) and Pare Pare (PRP). The EEJ current intensity is known to be highest around noon time between 1000 and 1100 LT during solar minimum and thus this study analyses the current system from 1000 to 1400 LT. The analysis showed that the geomagnetic storm occurred on 23 April 2008, which is caused by coronal mass ejection (CME), gives rises to the currents on that day. This increment is clearly observed on the currents at the southern hemisphere stations, which are MND and PRP. Our analysis also found that this geomagnetic storm gives increment to the current at the non-peak time. Apart from that, the current profile on this day is compared with the current profile from a quiet day on 21 April 2008.

KW - EEJ

KW - Ionospheric current system

KW - Solar event

KW - Sq

UR - http://www.scopus.com/inward/record.url?scp=85053599603&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053599603&partnerID=8YFLogxK

U2 - 10.17576/jsm-2018-4708-34

DO - 10.17576/jsm-2018-4708-34

M3 - Article

VL - 47

SP - 1923

EP - 1929

JO - Sains Malaysiana

JF - Sains Malaysiana

SN - 0126-6039

IS - 8

ER -