TY - GEN
T1 - Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers
AU - Ismail, Wan Nur Izzaty
AU - Hamid, Nurul Shazana Abdul
AU - Abdullah, Mardina
AU - Yoshikawa, Akimasa
N1 - Funding Information:
We thank all MAGDAS and INTERMAGNET for their contribution of data for this research. Financial support was provided by the Ministry of Education and Universiti Kebangsaan Malaysia, grants from FRGS/1/2015/ST02/UKM/02/1A. We also acknowledge Patric Alken and all researchers at German Research Centre for Geosciences (GFZ) for the contribution of Equatorial Electojet data from CHAMP and SWARM satellite measurement.
Publisher Copyright:
© 2019 Author(s).
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/6/27
Y1 - 2019/6/27
N2 - The intense current that flowing eastward in the dayside in the E layer of ionosphere at dip equator region is known as equatorial electrojet (EEJ). In this work, we attempt to compare the longitudinal profile of EEJ current estimated from the Challenging Minisatellite Payload (CHAMP) and European Space Agency satellite (SWARM) with the ground-based magnetometer network from six equatorial observatory pairs across the globe. Ground magnetometer were obtained from the network such as MAGDAS, INTERMAGNET and IIG. We process our data using the EUEL index during quiet days for ground measurement. Then, correlation coefficient were obtained after applying appropriate normalization techniques for both measurements. Analysis showed the longitudinal variations of EEJ current from ground indicates that this current was strongest at South American (77 °W) and Southeast Asian (99.78°E). Meanwhile, satellite measurement shows four peaks of EEJ current at -100°W, 0°E, 100°E and 180° E which are at North America, Atlantic ocean, Southeast Asian and Pacific ocean respectively.
AB - The intense current that flowing eastward in the dayside in the E layer of ionosphere at dip equator region is known as equatorial electrojet (EEJ). In this work, we attempt to compare the longitudinal profile of EEJ current estimated from the Challenging Minisatellite Payload (CHAMP) and European Space Agency satellite (SWARM) with the ground-based magnetometer network from six equatorial observatory pairs across the globe. Ground magnetometer were obtained from the network such as MAGDAS, INTERMAGNET and IIG. We process our data using the EUEL index during quiet days for ground measurement. Then, correlation coefficient were obtained after applying appropriate normalization techniques for both measurements. Analysis showed the longitudinal variations of EEJ current from ground indicates that this current was strongest at South American (77 °W) and Southeast Asian (99.78°E). Meanwhile, satellite measurement shows four peaks of EEJ current at -100°W, 0°E, 100°E and 180° E which are at North America, Atlantic ocean, Southeast Asian and Pacific ocean respectively.
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U2 - 10.1063/1.5111232
DO - 10.1063/1.5111232
M3 - Conference contribution
AN - SCOPUS:85068447626
T3 - AIP Conference Proceedings
BT - 2018 UKM FST Postgraduate Colloquium
A2 - Rasol, Noor Hayati Ahmad
A2 - Ibrahim, Kamarulzaman
A2 - Hasbullah, Siti Aishah
A2 - Jumali, Mohammad Hafizuddin Hj.
A2 - Ibrahim, Nazlina
A2 - Hanafiah, Marlia Mohd
A2 - Latif, Mohd Talib
PB - American Institute of Physics Inc.
T2 - 2018 UKM FST Postgraduate Colloquium
Y2 - 4 April 2018 through 6 April 2018
ER -