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Research Output 1996 2019

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2019
1 Citation (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., Oct 1 2019, In : Journal of Atmospheric and Solar-Terrestrial Physics. 192, 104776.

Research output: Contribution to journalArticle

Malaysia
Earth mantle
conductivity
mantle
profiles

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., Oct 1 2019, In : Acta Geophysica. 67, 5, p. 1297-1306 10 p.

Research output: Contribution to journalArticle

Philippines
signal processing
earthquakes
stations
diurnal variations

Deformation of Ionospheric Potential Pattern by Ionospheric Hall Polarization

Nakamizo, A. & Yoshikawa, A., Sep 1 2019, In : Journal of Geophysical Research: Space Physics. 124, 9, p. 7553-7580 28 p.

Research output: Contribution to journalArticle

ionospherics
polarization
Polarization
causes
IMF

Features of horizontal magnetic field intensity over northern island of Malaysia

Abbas, M., Abidin, Z. Z., Jusoh, M. H., Bolaji, O. S. & Yoshikawa, A., Oct 1 2019, In : Indian Journal of Physics. 93, 10, p. 1247-1257 11 p.

Research output: Contribution to journalArticle

Malaysia
solar activity
magnetic flux
night
equatorial electrojet

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., Oct 1 2019, In : Journal of Atmospheric and Solar-Terrestrial Physics. 192, 104769.

Research output: Contribution to journalArticle

Malaysia
field aligned currents
ionospheres
ionosphere
arcs

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., Jan 1 2019, In : Journal of Geophysical Research: Space Physics. 124, 7, p. 6156-6172 17 p.

Research output: Contribution to journalArticle

stratospheric warming
Upper atmosphere
electrojet
sectors
equatorial electrojet
1 Citation (Scopus)

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., Apr 1 2019, In : Studia Geophysica et Geodaetica. 63, 2, p. 304-319 16 p.

Research output: Contribution to journalArticle

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, May 1 2019, In : Indian Journal of Physics. 93, 5, p. 553-564 12 p.

Research output: Contribution to journalArticle

Malaysia
data acquisition
installing
magnetometers
space weather
1 Citation (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., Jan 1 2019, In : Space Weather.

Research output: Contribution to journalArticle

conductivity
modeling
geoelectric field
Australian Region
geomagnetic storm
1 Citation (Scopus)

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., Apr 1 2019, In : Earth and Space Science. 6, 4, p. 617-628 12 p.

Research output: Contribution to journalArticle

Open Access
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., Jun 1 2019, In : Space Weather. 17, 6, p. 861-876 16 p.

Research output: Contribution to journalArticle

electron density
ionosphere
erosion
electric field
penetration

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., May 1 2019, In : Journal of Geophysical Research: Space Physics. 124, 5, p. 3193-3209 17 p.

Research output: Contribution to journalArticle

ring currents
current ring
magnetic storms
Ions
ions
2018

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., Jun 16 2018, In : Geophysical Research Letters. 45, 11, p. 5299-5304 6 p.

Research output: Contribution to journalArticle

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., Sep 28 2018, In : Geophysical Research Letters. 45, 18, p. 9390-9397 8 p.

Research output: Contribution to journalArticle

extremely low frequencies
magnetic storms
simulation
electron
wave power
2 Citations (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., Oct 1 2018, In : Journal of Geophysical Research: Space Physics. 123, 10, p. 8599-8609 11 p.

Research output: Contribution to journalArticle

D region
ionospheric currents
Harmonic analysis
solar flares
electrojet
2 Citations (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., Nov 1 2018, In : Journal of Geophysical Research: Space Physics. 123, 11, p. 9005-9021 17 p.

Research output: Contribution to journalArticle

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

Pemerhatian Arus Ionosfera semasa Suar Suria Kuat Menggunakan Data Magnetometer Dasar

Translated title of the contribution: Observation of ionospheric current during strong solar flare using ground based magnetometerAnnadurai, N. M. N., Hamid, N. S. A. & Yoshikawa, A., Mar 2018, In : Sains Malaysiana. 47, 3, p. 595-601 7 p.

Research output: Contribution to journalArticle

Magnetometers
Ionosphere
Sun
Data acquisition
Earth (planet)

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

Research output: Contribution to journalArticle

geomagnetic storm
electrojet
Southern Hemisphere
coronal mass ejection
magnetometer
5 Citations (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., Dec 1 2018, In : earth, planets and space. 70, 1, 17.

Research output: Contribution to journalArticle

radiation
modeling
simulation
electron
radial diffusion
2017

Analysis of Magnetic Field Variations Produced by Equatorial Electro-Jets

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

Research output: Contribution to journalArticle

equatorial electrojet
electrojet
magnetic field
electron
daytime
2 Citations (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., Aug 1 2017, In : Journal of Geophysical Research: Space Physics. 122, 8, p. 8589-8603 15 p.

Research output: Contribution to journalArticle

ionospheric currents
magnetic fields
oscillation
Magnetic fields
electric field
4 Citations (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., May 1 2017, In : Journal of Geophysical Research: Space Physics. 122, 5, p. 5568-5578 11 p.

Research output: Contribution to journalArticle

Ionosphere
electric field
ionospheres
ionosphere
disturbances
3 Citations (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., Jan 1 2017, In : International Journal of Simulation: Systems, Science and Technology. 17, 41, p. 30.1-30.8

Research output: Contribution to journalArticle

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

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

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

Research output: Contribution to journalArticle

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

Latitudinal variation of ionospheric currents in Southeast Asian sector

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

Research output: Contribution to journalArticle

Solar Activity
electrojet
Sector
Networks (circuits)
Equator
4 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

Solar Activity
electrojet
Magnetometers
solar activity
magnetometer
17 Citations (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., Apr 7 2017, In : Annales Geophysicae. 35, 3, p. 535-545 11 p.

Research output: Contribution to journalArticle

equatorial electrojet
electrojets
electrojet
counters
occurrences
3 Citations (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., Apr 1 2017, In : Science China Earth Sciences. 60, 4, p. 776-785 10 p.

Research output: Contribution to journalArticle

ionization
anomaly
electrojet
Southern Hemisphere
asymmetry
5 Citations (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., Jul 1 2017, In : Space Weather. 15, 7, p. 895-916 22 p.

Research output: Contribution to journalArticle

geomagnetic storm
modeling
geoelectric field
solar cycle
magnetic field
3 Citations (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., Dec 1 2017, In : earth, planets and space. 69, 1, 61.

Research output: Contribution to journalArticle

morning
night
solar wind
solar wind velocity
geomagnetic latitude
8 Citations (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., Jul 15 2017, In : Advances in Space Research. 60, 2, p. 307-316 10 p.

Research output: Contribution to journalArticle

Ionosphere
ionospheres
ionosphere
daytime
correlation coefficients
2016
6 Citations (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., Dec 1 2016, In : earth, planets and space. 68, 1, 144.

Research output: Contribution to journalArticle

wind pressure
pressure pulses
aurora
magnetometer
magnetometers
1 Citation (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., Jul 1 2016, In : Journal of Geophysical Research: Space Physics. 121, 7, p. 6324-6340 17 p.

Research output: Contribution to journalArticle

field aligned currents
deflection
sectors
wedges
Polarization
6 Citations (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., Sep 1 2016, In : Journal of Geophysical Research A: Space Physics. 121, 9, p. 8428-8447 20 p.

Research output: Contribution to journalArticle

Magnetosphere
extremely low frequencies
magnetospheres
upstream
magnetosphere
9 Citations (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., Aug 1 2016, In : Journal of Geophysical Research: Space Physics. 121, 8, p. 8055-8065 11 p.

Research output: Contribution to journalArticle

stratospheric warming
Upper atmosphere
electrojet
equatorial electrojet
electrojets
3 Citations (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., Dec 1 2016, In : earth, planets and space. 68, 1, 137.

Research output: Contribution to journalArticle

tropical regions
sunrise
field aligned currents
sunset
ionospheric currents
6 Citations (Scopus)
field aligned currents
polar caps
ionospherics
Channel flow
polarization

The prolonged southward IMF-Bz event of 2–4 May 1998: Solar, interplanetary causes and geomagnetic consequences

Bisoi, S. K., Chakrabarty, D., Janardhan, P., Rastogi, R. G., Yoshikawa, A., Fujiki, K., Tokumaru, M. & Yan, Y., May 1 2016, In : Journal of Geophysical Research A: Space Physics. 121, 5, p. 3882-3904 23 p.

Research output: Contribution to journalArticle

coronal mass ejection
IMF
current sheets
magnetic fields
Magnetic fields
2015
5 Citations (Scopus)

Anomalous ULF emissions and their possible association with the strong earthquakes in sumatra, Indonesia, during 2007-2012

Ahadi, S., Puspito, N. T., Ibrahim, G., Saroso, S., Yumoto, K., Yoshikawa, A. & Muzli, L., Jan 1 2015, In : Journal of Mathematical and Fundamental Sciences. 47, 1, p. 84-103 20 p.

Research output: Contribution to journalArticle

Indonesia
Earthquakes
earthquakes
Earthquake
Anomalous
1 Citation (Scopus)

Capacity building: A tool for advancing space weather science

Cardinal, M. G., Yoshikawa, A., Kawano, H., Liu, H., Watanabe, M., Abe, S., Uozumi, T., Maeda, G., Hada, T. & Yumoto, K., Jan 1 2015, In : Space Weather. 12, 10, p. 571-576 6 p.

Research output: Contribution to journalArticle

capacity building
weather
science
2 Citations (Scopus)

Eastward-expanding auroral surges observed in the post-midnight sector during a multiple-onset substorm

Tanaka, Y., Ogawa, Y., Kadokura, A., Partamies, N., Whiter, D., Enell, C. F., Brändström, U., Sergienko, T., Gustavsson, B., Kozlovsky, A., Miyaoka, H. & Yoshikawa, A., Dec 1 2015, In : earth, planets and space. 67, 1, 182.

Research output: Contribution to journalArticle

sectors
aurora
current direction
recurrence interval
magnetometer
12 Citations (Scopus)

Empirical model of equatorial electrojet based on ground-based magnetometer data during solar minimum in fall 3. Space science

Hamid, N. S. A., Liu, H., Uozumi, T. & Yoshikawa, A., Dec 1 2015, In : earth, planets and space. 67, 1, 205.

Research output: Contribution to journalArticle

equatorial electrojet
electrojet
aerospace sciences
magnetometer
magnetometers

Generation of different long-period geomagnetic pulsations during a sudden impulse

Moiseyev, A. V., Popov, V. I., Mullayarov, V. A., Samsonov, S. N., Du, A. & Yoshikawa, A., Jul 25 2015, In : Cosmic Research. 53, 4, p. 257-266 10 p.

Research output: Contribution to journalArticle

geomagnetic pulsations
Magnetosphere
Solar wind
impulses
oscillation
11 Citations (Scopus)

Near-equatorial Pi2 and Pc3 waves observed by CHAMP and on SAMBA/MAGDAS stations

Cuturrufo, F., Pilipenko, V., Heilig, B., Stepanova, M., Lühr, H., Vega, P. & Yoshikawa, A., Feb 15 2015, In : Advances in Space Research. 55, 4, p. 1180-1189 10 p.

Research output: Contribution to journalArticle

CHAMP
stations
Ionosphere
ionosphere
daytime
15 Citations (Scopus)

NmF2 and hmF2 measurements at 95° e and 127° e around the EIA northern crest during 2010-2014

Kalita, B. R., Bhuyan, P. K. & Yoshikawa, A., Dec 1 2015, In : earth, planets and space. 67, 1, 67.

Research output: Contribution to journalArticle

solar activity
anomalies
anomaly
equatorial electrojet
electrojet
5 Citations (Scopus)

Pi2 pulsations observed around the dawn terminator

Imajo, S., Yoshikawa, A., Uozumi, T., Ohtani, S., Nakamizo, A., Marshall, R., Shevtsov, B. M., Akulichev, V. A., Sukhbaatar, U., Liedloff, A. & Yumoto, K., Mar 1 2015, In : Journal of Geophysical Research A: Space Physics. 120, 3, p. 2088-2098 11 p.

Research output: Contribution to journalArticle

E region
oscillation
Statistical methods
Polarization
oscillations
4 Citations (Scopus)

Spatial variability of solar quiet fields along 96° magnetic meridian in Africa: Results from MAGDAS

Bolaji, O. S., Rabiu, A. B., Bello, O. R., Yoshikawa, A., Yumoto, K., Odeyemi, O. O. & Ogunmodimu, O., May 1 2015, In : Journal of Geophysical Research: Space Physics. 120, 5, p. 3883-3898 16 p.

Research output: Contribution to journalArticle

Upper atmosphere
noon
stratospheric warming
data acquisition
magnetic equator

The 2011 eruption of Aso volcano, Japan, and its signature on the geomagnetic field measurements

Takla, E. M., Odah, H., Abd Elaal, E. M., Yoshikawa, A., Kawano, H. & Uozumi, T., Oct 30 2015, In : Arabian Journal of Geosciences. 8, 10, p. 8497-8503 7 p.

Research output: Contribution to journalArticle

geomagnetic field
volcano
volcanic eruption
diurnal variation
station
2014
14 Citations (Scopus)

A case study of ionospheric storm effects during long-lasting southward IMF Bz-driven geomagnetic storm

Liu, J., Liu, L., Nakamura, T., Zhao, B., Ning, B. & Yoshikawa, A., Jan 1 2014, In : Journal of Geophysical Research: Space Physics. 119, 9, p. 7716-7731 16 p.

Research output: Contribution to journalArticle

ionospheric storms
geomagnetic storm
interplanetary magnetic fields
magnetic storms
electric field
2 Citations (Scopus)

Analysis of propagation delays of compressional Pi 2 waves between geosynchronous altitude and low latitudes

Imajo, S., Yumoto, K., Uozumi, T., Kawano, H., Abe, S., Ikeda, A., Koga, K., Matsumoto, H., Obara, T., Marshall, R., Akulichev, V. A., Mahrous, A., Liedloff, A. & Yoshikawa, A., Jan 1 2014, In : earth, planets and space. 66, 1, 20.

Research output: Contribution to journalArticle

Open Access
tropical regions
propagation
time lag
ground stations
magnetospheres