Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers

Wan Nur Izzaty Ismail; Nurul Shazana Abdul Hamid; Mardina Abdullah; Akimasa Yoshikawa

doi:10.1063/1.5111232

Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers

Wan Nur Izzaty Ismail, Nurul Shazana Abdul Hamid, Mardina Abdullah, Akimasa Yoshikawa

Earth Planetary Fluid and Space Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English
Title of host publication	2018 UKM FST Postgraduate Colloquium
Subtitle of host publication	Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium
Editors	Noor Hayati Ahmad Rasol, Kamarulzaman Ibrahim, Siti Aishah Hasbullah, Mohammad Hafizuddin Hj. Jumali, Nazlina Ibrahim, Marlia Mohd Hanafiah, Mohd Talib Latif
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735418431
DOIs	https://doi.org/10.1063/1.5111232
Publication status	Published - Jun 27 2019
Event	2018 UKM FST Postgraduate Colloquium - Selangor, Malaysia Duration: Apr 4 2018 → Apr 6 2018

Publication series

Name	AIP Conference Proceedings
Volume	2111
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	2018 UKM FST Postgraduate Colloquium
Country	Malaysia
City	Selangor
Period	4/4/18 → 4/6/18

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.5111232

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Ismail, W. N. I., Hamid, N. S. A., Abdullah, M., & Yoshikawa, A. (2019). Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers. In N. H. A. Rasol, K. Ibrahim, S. A. Hasbullah, M. H. H. Jumali, N. Ibrahim, M. M. Hanafiah, & M. T. Latif (Eds.), 2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium [030002] (AIP Conference Proceedings; Vol. 2111). American Institute of Physics Inc.. https://doi.org/10.1063/1.5111232

Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers. / Ismail, Wan Nur Izzaty; Hamid, Nurul Shazana Abdul; Abdullah, Mardina; Yoshikawa, Akimasa.

2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium. ed. / Noor Hayati Ahmad Rasol; Kamarulzaman Ibrahim; Siti Aishah Hasbullah; Mohammad Hafizuddin Hj. Jumali; Nazlina Ibrahim; Marlia Mohd Hanafiah; Mohd Talib Latif. American Institute of Physics Inc., 2019. 030002 (AIP Conference Proceedings; Vol. 2111).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ismail, WNI, Hamid, NSA, Abdullah, M & Yoshikawa, A 2019, Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers. in NHA Rasol, K Ibrahim, SA Hasbullah, MHH Jumali, N Ibrahim, MM Hanafiah & MT Latif (eds), 2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium., 030002, AIP Conference Proceedings, vol. 2111, American Institute of Physics Inc., 2018 UKM FST Postgraduate Colloquium, Selangor, Malaysia, 4/4/18. https://doi.org/10.1063/1.5111232

Ismail WNI, Hamid NSA, Abdullah M, Yoshikawa A. Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers. In Rasol NHA, Ibrahim K, Hasbullah SA, Jumali MHH, Ibrahim N, Hanafiah MM, Latif MT, editors, 2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium. American Institute of Physics Inc. 2019. 030002. (AIP Conference Proceedings). https://doi.org/10.1063/1.5111232

Ismail, Wan Nur Izzaty ; Hamid, Nurul Shazana Abdul ; Abdullah, Mardina ; Yoshikawa, Akimasa. / Longitudinal profile of equatorial electrojet derived from ground and satellite based magnetometers. 2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium. editor / Noor Hayati Ahmad Rasol ; Kamarulzaman Ibrahim ; Siti Aishah Hasbullah ; Mohammad Hafizuddin Hj. Jumali ; Nazlina Ibrahim ; Marlia Mohd Hanafiah ; Mohd Talib Latif. American Institute of Physics Inc., 2019. (AIP Conference Proceedings).

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abstract = "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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