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研究成果 1996 2019

2019

Assessment of signal processing methods for geomagnetic precursor of the 2012 M6.9 Visayas, Philippines earthquake

Yusof, K. A., Abdul Hamid, N. S., Abdullah, M., Ahadi, S. & Yoshikawa, A., 1 1 2019, : : Acta Geophysica.

研究成果: ジャーナルへの寄稿記事

Philippines
signal processing
earthquakes
stations
diurnal variations

Assessment of the Geomagnetically Induced Current (GIC) at Low Latitude Region based on MAGDAS Data

Mohd Anuar, N., Mohd Kasran, F. A., Abbas, M., Jusoh, M. H., Enche Ab Rahim, S. A., Abdul Hadi, N., Yoshikawa, A. & Mohd Radzi, Z., 3 4 2019, : : Journal of Physics: Conference Series. 1152, 1, 012028.

研究成果: ジャーナルへの寄稿Conference article

公開
data systems
tropical regions
data acquisition
stations
Malaysia

Characteristic of the Disturbed Days Ionospheric Current System in the 180-Degree Magnetic Meridian

Nurbaiti Ibrahim, S., Huzaimy Jusoh, M., Asari Sulaiman, A., Yoshikawa, A. & Mohd Radzi, Z., 3 4 2019, : : Journal of Physics: Conference Series. 1152, 1, 012029.

研究成果: ジャーナルへの寄稿Conference article

公開
ionospheric currents
magnetic storms
solar wind
wind pressure
harmonic analysis

Electromagnetic induction responses to geomagnetic disturbances at low-and-mid-latitudes

Nakahara, M., Yoshikawa, A., Uozumi, T. & Fujimoto, A., 3 4 2019, : : Journal of Physics: Conference Series. 1152, 1, 012035.

研究成果: ジャーナルへの寄稿Conference article

公開
induction
disturbances
electromagnetism
electric fields
magnetic fields

Estimation of time derivative of horizontal geomagnetic component for GIC assesment in Malaysia during quiet period

Anuar, N. M., Kasran, F. A. M., Latif, Z. I. A., Rahim, S. A. E. A., Manut, A., Jusoh, M. H., Hadi, N. A. & Yoshikawa, A., 1 8 2019, ICSET 2018 - 2018 IEEE 8th International Conference on System Engineering and Technology, Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 118-122 5 p. 8606390. (ICSET 2018 - 2018 IEEE 8th International Conference on System Engineering and Technology, Proceedings).

研究成果: 著書/レポートタイプへの貢献会議での発言

Malaysia
Induced currents
Horizontal
Derivatives
Derivative

Investigation on the Variability of the Geomagnetic Daily Current During Sudden Stratospheric Warmings

Owolabi, C., Lei, J., Bolaji, O. S., Jimoh, O., Ruan, H., Li, N., Niu, X. & Yoshikawa, A., 1 1 2019, : : Journal of Geophysical Research: Space Physics. 124, 7, p. 6156-6172 17 p.

研究成果: ジャーナルへの寄稿記事

stratospheric warming
ionospheric currents
Upper atmosphere
electrojet
sectors

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

Ismail, W. N. I., Hamid, N. S. A., Abdullah, M. & Yoshikawa, A., 6 27 2019, 2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium. Rasol, N. H. A., Ibrahim, K., Hasbullah, S. A., Jumali, M. H. H., Ibrahim, N., Hanafiah, M. M. & Latif, M. T. (版). American Institute of Physics Inc., 030002. (AIP Conference Proceedings; 巻数 2111).

研究成果: 著書/レポートタイプへの貢献会議での発言

公開
equatorial electrojet
electrojet
magnetometer
magnetometers
profiles

Longitudinal variability of the equatorial counter electrojet during the solar cycle 24

Soares, G., Yamazaki, Y., Matzka, J., Pinheiro, K., Stolle, C., Alken, P., Yoshikawa, A., Uozumi, T., Fujimoto, A. & Kulkarni, A., 4 1 2019, : : Studia Geophysica et Geodaetica. 63, 2, p. 304-319 16 p.

研究成果: ジャーナルへの寄稿記事

electrojets
electrojet
solar cycles
solar cycle
lunar phase

Magnetic Data Acquisition System (MAGDAS) Malaysia: installation and preliminary data analysis at ESERI, UNISZA

MAGDAS/CPMN Group, 5 1 2019, : : Indian Journal of Physics. 93, 5, p. 553-564 12 p.

研究成果: ジャーナルへの寄稿記事

Malaysia
data acquisition
installing
magnetometers
space weather
1 引用 (Scopus)

Modeling Geomagnetically Induced Currents in Australian Power Networks Using Different Conductivity Models

Marshall, R. A., Wang, L., Paskos, G. A., Olivares-Pulido, G., Van Der Walt, T., Ong, C., Mikkelsen, D., Hesse, G., McMahon, B., Van Wyk, E., Ivanovich, G., Spoor, D., Taylor, C. & Yoshikawa, A., 1 1 2019, : : Space Weather.

研究成果: ジャーナルへの寄稿記事

conductivity
modeling
geoelectric field
Australian Region
geomagnetic storm

Relationship between plasma bubble and ionospheric current, equatorial electrojet, and equatorial counter electrojet

Akiyama, T., Yoshikawa, A., Fujimoto, A. & Uozumi, T., 3 4 2019, : : Journal of Physics: Conference Series. 1152, 1, 012022.

研究成果: ジャーナルへの寄稿Conference article

公開
ionospheric currents
plasma bubbles
equatorial electrojet
electrojets
counters

Response of Ionospheric Profile Parameters to Equatorial Electrojet Over Peruvian Station

Bello, S. A., Abdullah, M., Hamid, N. S. A., Reinisch, B. W., Yoshikawa, A. & Fujimoto, A., 4 1 2019, : : Earth and Space Science. 6, 4, p. 617-628 12 p.

研究成果: ジャーナルへの寄稿記事

公開
electrojet
electron density
solar activity
station
parameter

Response of the Ionosphere-Plasmasphere Coupling to the September 2017 Storm: What Erodes the Plasmasphere so Severely?

Obana, Y., Maruyama, N., Shinbori, A., Hashimoto, K. K., Fedrizzi, M., Nosé, M., Otsuka, Y., Nishitani, N., Hori, T., Kumamoto, A., Tsuchiya, F., Matsuda, S., Matsuoka, A., Kasahara, Y., Yoshikawa, A., Miyoshi, Y. & Shinohara, I., 6 1 2019, : : Space Weather. 17, 6, p. 861-876 16 p.

研究成果: ジャーナルへの寄稿記事

electron density
ionosphere
erosion
electric field
penetration

Statistical study of equatorial geomagnetic crochets

Annadurai, N. M. N., Hamid, N. S. A. & Yoshikawa, A., 6 27 2019, 2018 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2018 Postgraduate Colloquium. Rasol, N. H. A., Ibrahim, K., Hasbullah, S. A., Jumali, M. H. H., Ibrahim, N., Hanafiah, M. M. & Latif, M. T. (版). American Institute of Physics Inc., 030003. (AIP Conference Proceedings; 巻数 2111).

研究成果: 著書/レポートタイプへの貢献会議での発言

公開
solar flares
data analysis
magnetometer
magnetometers
stations

Statistical Study of Selective Oxygen Increase in High-Energy Ring Current Ions During Magnetic Storms

Mitani, K., Seki, K., Keika, K., Gkioulidou, M., Lanzerotti, L. J., Mitchell, D. G., Kletzing, C. A., Yoshikawa, A. & Obana, Y., 5 1 2019, : : Journal of Geophysical Research: Space Physics. 124, 5, p. 3193-3209 17 p.

研究成果: ジャーナルへの寄稿記事

ring currents
current ring
magnetic storms
Ions
ions

The first solar-powered Magdas-9 installation and possible geomagnetically induced currents study at Johor, Malaysia

Iffah Abd Latiff, Z., Huzaimy Jusoh, M., Adilah Mohd Kasran, F., Amalina Enche Ab Rahim, S., Onn, M., Zainuddin, A., Asraf Hairuddin, M., Kasuan, N., Muzamil Mustam, M., Mohamed, S. & Yoshikawa, A., 3 4 2019, : : Journal of Physics: Conference Series. 1152, 1, 012030.

研究成果: ジャーナルへの寄稿Conference article

公開
Malaysia
magnetometers
data acquisition
installing
stations
2018
1 引用 (Scopus)

Application of solar quiet (Sq) current in determining mantle conductivity-depth structure in Malaysia

Abidin, Z. Z., Jusoh, M. H., Abbas, M. & Yoshikawa, A., 1 1 2018, (受理済み/印刷中) : : Journal of Atmospheric and Solar-Terrestrial Physics.

研究成果: ジャーナルへの寄稿記事

Malaysia
Earth mantle
conductivity
mantle
profiles

Earth's ionosphere: Theory and phenomenology of cowling channels

Yoshikawa, A. & Fujii, R., 4 17 2018, Electric Currents in Geospace and Beyond. wiley, p. 427-443 17 p.

研究成果: 著書/レポートタイプへの貢献

Ionosphere
electric field
Names
Magnetosphere
Earth (planet)

Features of the inter-hemispheric field-aligned current system over Malaysia ionosphere

Abidin, Z. Z., Jusoh, M. H., Abbas, M., Bolaji, O. S. & Yoshikawa, A., 1 1 2018, (受理済み/印刷中) : : Journal of Atmospheric and Solar-Terrestrial Physics.

研究成果: ジャーナルへの寄稿記事

Malaysia
field aligned currents
ionospheres
ionosphere
arcs

Generation of Electron Acoustic Waves in the Topside Ionosphere From Coupling With Kinetic Alfven Waves: A New Electron Energization Mechanism

Shi, R., Ni, B., Summers, D., Liu, H., Yoshikawa, A. & Zhang, B., 6 16 2018, : : Geophysical Research Letters. 45, 11, p. 5299-5304 6 p.

研究成果: ジャーナルへの寄稿記事

acoustic wave
magnetohydrodynamic waves
ionospheres
ionosphere
electron

Global Distribution of ULF Waves During Magnetic Storms: Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation

Takahashi, N., Seki, K., Teramoto, M., Fok, M. C., Zheng, Y., Matsuoka, A., Higashio, N., Shiokawa, K., Baishev, D., Yoshikawa, A. & Nagatsuma, T., 9 28 2018, : : Geophysical Research Letters. 45, 18, p. 9390-9397 8 p.

研究成果: ジャーナルへの寄稿記事

extremely low frequencies
magnetic storms
simulation
electron
wave power

Global response of Magnetic field and Ionosonde observations to intense solar flares on 6 and 10 September 2017

Fujimoto, A., Yoshikawa, A. & Ikeda, A., 11 7 2018, : : E3S Web of Conferences. 62, 01007.

研究成果: ジャーナルへの寄稿Conference article

Radio waves
radio wave
Magnetic fields
magnetic field
disturbance
1 引用 (Scopus)

Investigation of Unusual Solar Flare Effect on the Global Ionospheric Current System

Annadurai, N. M. N., Hamid, N. S. A., Yamazaki, Y. & Yoshikawa, A., 10 1 2018, : : Journal of Geophysical Research: Space Physics. 123, 10, p. 8599-8609 11 p.

研究成果: ジャーナルへの寄稿記事

D region
ionospheric currents
Harmonic analysis
solar flares
electrojet
1 引用 (Scopus)

Longitudinal Development of Poleward Boundary Intensifications (PBIs) of Auroral Emission

Ohtani, S., Motoba, T., Gjerloev, J. W., Ruohoniemi, J. M., Donovan, E. F. & Yoshikawa, A., 11 1 2018, : : Journal of Geophysical Research: Space Physics. 123, 11, p. 9005-9021 17 p.

研究成果: ジャーナルへの寄稿記事

polar caps
convection
ionospherics
field aligned currents
Channel flow
1 引用 (Scopus)

Pemerhatian Arus Ionosfera semasa Suar Suria Kuat Menggunakan Data Magnetometer Dasar

Annadurai, N. M. N., Hamid, N. S. A. & Yoshikawa, A., 3 1 2018, : : Sains Malaysiana. 47, 3, p. 595-601 7 p.

研究成果: ジャーナルへの寄稿記事

Magnetometers
Ionosphere
Sun
Data acquisition
Earth (planet)

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

Hamid, N. S. A., Wen, V. A., Rosli, N. I. M. & Yoshikawa, A., 8 1 2018, : : Sains Malaysiana. 47, 8, p. 1923-1929 7 p.

研究成果: ジャーナルへの寄稿記事

geomagnetic storm
electrojet
Southern Hemisphere
coronal mass ejection
magnetometer

Schumann resonance parameters at Kuju station during solar flares

Ikeda, A., Uozumi, T., Yoshikawa, A., Fujimoto, A. & Abe, S., 11 7 2018, : : E3S Web of Conferences. 62, 01012.

研究成果: ジャーナルへの寄稿Conference article

D region
Fluxes
X rays
Protons
solar activity
3 引用 (Scopus)

Theory, modeling, and integrated studies in the Arase (ERG) project

Seki, K., Miyoshi, Y., Ebihara, Y., Katoh, Y., Amano, T., Saito, S., Shoji, M., Nakamizo, A., Keika, K., Hori, T., Nakano, S. Y., Watanabe, S., Kamiya, K., Takahashi, N., Omura, Y., Nose, M., Fok, M. C., Tanaka, T., Ieda, A. & Yoshikawa, A., 12 1 2018, : : earth, planets and space. 70, 1, 17.

研究成果: ジャーナルへの寄稿記事

radiation
modeling
simulation
electron
radial diffusion
2017

Analysis of Magnetic Field Variations Produced by Equatorial Electro-Jets

López, E., Aldás, F. & Yoshikawa, A., 1 1 2017, : : Proceedings of the International Astronomical Union. 13, S335, p. 125-127 3 p.

研究成果: ジャーナルへの寄稿記事

equatorial electrojet
electrojet
magnetic field
electron
daytime
2 引用 (Scopus)

Application of a global magnetospheric-ionospheric current model for dayside and terminator Pi2 pulsations

Imajo, S., Yoshikawa, A., Uozumi, T., Ohtani, S., Nakamizo, A. & Chi, P. J., 8 1 2017, : : Journal of Geophysical Research: Space Physics. 122, 8, p. 8589-8603 15 p.

研究成果: ジャーナルへの寄稿記事

ionospheric currents
magnetic fields
oscillation
Magnetic fields
electric field

Characteristics of Schumann Resonance Parameters at Kuju Station

Ikeda, A., Uozumi, T., Yoshikawa, A., Fujimoto, A., Abe, S., Nozawa, H. & Shinohara, M., 10 24 2017, : : E3S Web of Conferences. 20, 01004.

研究成果: ジャーナルへの寄稿Conference article

Lightning
lightning
Magnetometers
magnetometer
Magnetic fields
3 引用 (Scopus)

Contribution of storm time substorms to the prompt electric field disturbances in the equatorial ionosphere

Hui, D., Chakrabarty, D., Sekar, R., Reeves, G. D., Yoshikawa, A. & Shiokawa, K., 5 1 2017, : : Journal of Geophysical Research: Space Physics. 122, 5, p. 5568-5578 11 p.

研究成果: ジャーナルへの寄稿記事

Ionosphere
electric field
ionospheres
ionosphere
disturbances
2 引用 (Scopus)

First geomagnetic observation at sabah, malaysia by using MAGDAS array

Ibrahim, S. N., Jusoh, M. H., Sulaiman, A. A., Ahmad, S. N. A., Makmud, M. Z. H., Musta, B., Abdullah, M., Asillam, M. F., Pathy, N. B., Hashim, M. H. & Yoshikawa, A., 1 1 2017, : : International Journal of Simulation: Systems, Science and Technology. 17, 41, p. 30.1-30.8

研究成果: ジャーナルへの寄稿記事

Malaysia
Magnetometers
Data Acquisition
Data acquisition
Longitude
4 引用 (Scopus)

High-latitude Pi2 pulsations associated with kink-like neutral sheet oscillations

Wang, G. Q., Volwerk, M., Zhang, T. L., Schmid, D. & Yoshikawa, A., 3 1 2017, : : Journal of Geophysical Research: Space Physics. 122, 3, p. 2889-2899 11 p.

研究成果: ジャーナルへの寄稿記事

neutral sheets
field aligned currents
polar regions
oscillation
oscillations
2 引用 (Scopus)

Latitudinal variation of ionospheric currents in Southeast Asian sector

Hamid, N. S. A., Ismail, W. N. I. & Yoshikawa, A., 2 1 2017, : : Advanced Science Letters. 23, 2, p. 1444-1447 4 p.

研究成果: ジャーナルへの寄稿記事

Solar Activity
electrojet
Sector
Networks (circuits)
Equator
3 引用 (Scopus)

Longitudinal profile of the equatorial electrojet current and its dependence on solar activity

Hamid, N. S. A., Ismail, W. N. I. & Yoshikawa, A., 2 1 2017, : : Advanced Science Letters. 23, 2, p. 1357-1360 4 p.

研究成果: ジャーナルへの寄稿記事

Solar Activity
electrojet
Magnetometers
solar activity
magnetometer
2 引用 (Scopus)

Longitudinal Variation of EEJ Current during Different Phases of Solar Cycle

Ismail, W. N. I., Hamid, N. S. A., Abdullah, M., Yoshikawa, A. & Uozumi, T., 6 6 2017, : : Journal of Physics: Conference Series. 852, 1, 012019.

研究成果: ジャーナルへの寄稿Conference article

equatorial electrojet
solar cycles
sectors
magnetometers
equators
12 引用 (Scopus)

Longitudinal variation of equatorial electrojet and the occurrence of its counter electrojet

Babatunde Rabiu, A., Folarin, O. O., Uozumi, T., Hamid, N. S. A. & Yoshikawa, A., 4 7 2017, : : Annales Geophysicae. 35, 3, p. 535-545 11 p.

研究成果: ジャーナルへの寄稿記事

equatorial electrojet
electrojets
electrojet
counters
occurrences
3 引用 (Scopus)

Meridional movement of northern and southern equatorial ionization anomaly crests in the East-Asian sector during 2002–2003 SSW

Mo, X. H., Zhang, D. H., Goncharenko, L. P., Zhang, S. R., Hao, Y. Q., Xiao, Z., Pei, J. Z., Yoshikawa, A. & Chau, H. D., 4 1 2017, : : Science China Earth Sciences. 60, 4, p. 776-785 10 p.

研究成果: ジャーナルへの寄稿記事

ionization
anomaly
electrojet
Southern Hemisphere
asymmetry
5 引用 (Scopus)

Modeling geomagnetic induced currents in Australian power networks

Marshall, R. A., Kelly, A., Van Der Walt, T., Honecker, A., Ong, C., Mikkelsen, D., Spierings, A., Ivanovich, G. & Yoshikawa, A., 7 1 2017, : : Space Weather. 15, 7, p. 895-916 22 p.

研究成果: ジャーナルへの寄稿記事

geomagnetic storm
modeling
geoelectric field
solar cycle
magnetic field

Monitoring of Space and Earth electromagnetic environment by MAGDAS project: Collaboration with IKIR-Introduction to ICSWSE/MAGDAS project

Yoshikawa, A., Fujimoto, A., Ikeda, A., Uozumi, T. & Abe, S., 10 24 2017, : : E3S Web of Conferences. 20, 01013.

研究成果: ジャーナルへの寄稿Conference article

Education
Earth (planet)
education
weather
Magnetometers
3 引用 (Scopus)

Nighttime Pc3 pulsations: MM100 and MAGDAS observations

Yagova, N. V., Heilig, B., Pilipenko, V. A., Yoshikawa, A., Nosikova, N. S., Yumoto, K. & Reda, J., 12 1 2017, : : earth, planets and space. 69, 1, 61.

研究成果: ジャーナルへの寄稿記事

morning
night
solar wind
solar wind velocity
geomagnetic latitude
1 引用 (Scopus)

Peak time of equatorial electrojet from different longitude sectors during fall solar minimum

Hamid, N. S. A., Liu, H., Uozumi, T., Yoshikawa, A. & Annadurai, N. M. N., 6 6 2017, : : Journal of Physics: Conference Series. 852, 1, 012015.

研究成果: ジャーナルへの寄稿Conference article

equatorial electrojet
longitude
sectors
American Indians
Earth ionosphere
8 引用 (Scopus)

Variations of B0 and B1 with the solar quiet Sq-current system and comparison with IRI-2012 model at Ilorin

Bello, S. A., Abdullah, M., Hamid, N. S. A., Yoshikawa, A. & Olawepo, A. O., 7 15 2017, : : Advances in Space Research. 60, 2, p. 307-316 10 p.

研究成果: ジャーナルへの寄稿記事

Ionosphere
ionospheres
ionosphere
daytime
correlation coefficients
2016
3 引用 (Scopus)

A proposal on the study of solar-terrestrial coupling processes with atmospheric radars and ground-based observation network

Tsuda, T., Yamamoto, M., Hashiguchi, H., Shiokawa, K., Ogawa, Y., Nozawa, S., Miyaoka, H. & Yoshikawa, A., 9 1 2016, : : Radio Science. 51, 9, p. 1587-1599 13 p.

研究成果: ジャーナルへの寄稿評論記事

equators
polar regions
radar
proposals
Radar
5 引用 (Scopus)

Evolution of the current system during solar wind pressure pulses based on aurora and magnetometer observations

Nishimura, Y., Kikuchi, T., Ebihara, Y., Yoshikawa, A., Imajo, S., Li, W. & Utada, H., 12 1 2016, : : earth, planets and space. 68, 1, 144.

研究成果: ジャーナルへの寄稿記事

wind pressure
pressure pulses
aurora
magnetometer
magnetometers
1 引用 (Scopus)

Initial deflection of middle-latitude Pi2 pulsations in the premidnight sector: Remote detection of oscillatory upward field-aligned current at substorm onset

Uozumi, T., Yoshikawa, A., Ohtani, S., Imajo, S., Baishev, D. G., Moiseev, A. V. & Yumoto, K., 7 1 2016, : : Journal of Geophysical Research: Space Physics. 121, 7, p. 6324-6340 17 p.

研究成果: ジャーナルへの寄稿記事

field aligned currents
deflection
sectors
wedges
Polarization
6 引用 (Scopus)

Propagation of ULF waves from the upstream region to the midnight sector of the inner magnetosphere

Takahashi, K., Hartinger, M. D., Malaspina, D. M., Smith, C. W., Koga, K., Singer, H. J., Frühauff, D., Baishev, D. G., Moiseev, A. V. & Yoshikawa, A., 9 1 2016, : : Journal of Geophysical Research A: Space Physics. 121, 9, p. 8428-8447 20 p.

研究成果: ジャーナルへの寄稿記事

Magnetosphere
extremely low frequencies
magnetospheres
upstream
magnetosphere
7 引用 (Scopus)

Solar quiet current response in the African sector due to a 2009 sudden stratospheric warming event

Bolaji, O. S., Oyeyemi, E. O., Owolabi, O. P., Yamazaki, Y., Rabiu, A. B., Okoh, D., Fujimoto, A., Amory-Mazaudier, C., Seemala, G. K., Yoshikawa, A. & Onanuga, O. K., 8 1 2016, : : Journal of Geophysical Research: Space Physics. 121, 8, p. 8055-8065 11 p.

研究成果: ジャーナルへの寄稿記事

stratospheric warming
Upper atmosphere
electrojet
equatorial electrojet
electrojets
3 引用 (Scopus)

Solar terminator effects on middle- to low-latitude Pi2 pulsations

Imajo, S., Yoshikawa, A., Uozumi, T., Ohtani, S., Nakamizo, A., Demberel, S. & Shevtsov, B. M., 12 1 2016, : : earth, planets and space. 68, 1, 137.

研究成果: ジャーナルへの寄稿記事

tropical regions
sunrise
field aligned currents
sunset
ionospheric currents