YOSHIKAWA Akimasa

J-GLOBAL         Last updated: Dec 10, 2018 at 08:44
 
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Name
YOSHIKAWA Akimasa
Affiliation
Kyushu University
Section
Faculty of Sciences, Department of Earth and Planetary Sciences
Degree
(BLANK)(Kyushu University), (BLANK)(Kyushu University), (BLANK)
ORCID ID
https://orcid.org/0000-0003-3735-1325

Research Areas

 
 

Education

 
Apr 1990
 - 
Mar 1995
Graduate School, Division of Natural Science, Kyushu University
 
 
 - 
1989
Faculty of Science, Yamaguchi University
 

Awards & Honors

 
2001
Studies on Ionospheric Divergent Hall Current, PRESIDENT AWARD OF KYUSHU UNIVERSITY University
Winner: Akimasa Yoshikawa
 

Published Papers

 
Hamid Nurul Shazana Abdul, Wen Viksuthorn Ai, Rosli Nur Izzati Mohd, Yoshikawa Akimasa
SAINS MALAYSIANA   47(8) 1923-1929   Aug 2018   [Refereed]
Shi Run, Ni Binbin, Summers Danny, Liu Huixin, Yoshikawa Akimasa, Zhang Beichen
GEOPHYSICAL RESEARCH LETTERS   45(11) 5299-5304   Jun 2018   [Refereed]
Seki Kanako, Miyoshi Yoshizumi, Ebihara Yusuke, Katoh Yuto, Amano Takanobu, Saito Shinji, Shoji Masafumi, Nakamizo Aoi, Keika Kunihiro, Hori Tomoaki, Nakano Shin'ya, Watanabe Shigeto, Kamiya Kei, Takahashi Naoko, Omura Yoshiharu, Nose Masahito, Fok Mei-Ching, Tanaka Takashi, Ieda Akimasa, Yoshikawa Akimasa
EARTH PLANETS AND SPACE   70(Feb) 70:17 (WEB ONLY)   Feb 2018   [Refereed]
Global response of Magnetic field and Ionosonde observations to intense solar flares on 6 and 10 September 2017
Fujimoto Akiko, Yoshikawa Akimasa and Ikeda Akihiro
E3S Web of Conferences   62 1007   2018   [Refereed]
Schumann resonance parameters at Kuju station during solar flares
Ikeda Akihiro, Uozumi Teiji, Yoshikawa Akimasa, Fujimoto Akiko and Abe Shuji
E3S Web of Conferences   62 1012   2018   [Refereed]
Magnetic Data Acquisition System (MAGDAS) Malaysia: installation and preliminary data analysis at ESERI, UNISZA
Umar R, Natasha SF, Aminah SSN, Juhari KN, Jusoh MH, Hamid NSA, Hashim MH, Radzi ZM, Ishak AN, Hazmin SN, WZAW Mokhtar, MKA Kamarudin, H Juahir and A Yoshikawa
Indian Journal of Physics   41650   2018   [Refereed]
Changes in Ionospheric Currents System at Southeast Asia Region during Geomagnetic Storm in Solar's Minimum Phase
Hamid Nurul Shazana Abdul, Wen Viksuthorn Ai, Rosli Nur Izzati Mohd and Yoshikawa Akimasa
SAINS MALAYSIANA   47(8) 1923-1929   2018   [Refereed]
Ohtani S, Motoba T, Gjeroloev JW, Ruohoniemi JM, Donovan EF and Yoshikawa Akimasa
Journal of Geophysical Research: Space Physics      Jan 2018   [Refereed]
©2018. American Geophysical Union. All Rights Reserved. We have investigated the longitudinal propagation and extension of the poleward boundary intensifications (PBIs) of auroral emission by examining four events, Events 1–4, which show different...
Takahashi Naoko, Seki Kanako, Teramoto Mariko, Fok Me-Ching, Zheng Yihua, Matsuoka Ayako, Higashio Nana, Shiokawa Kazuo, Baishev Dmitry, Yoshikawa Akimasa and Tsutomu Nagatsuma
Geophysical Research Letters   45(18) 9390-9397   Sep 2018   [Refereed]
©2018. American Geophysical Union. All Rights Reserved. During 26–29 March 2017 magnetic storm, the Arase satellite observed typical ultra low frequency (ULF) waves and acceleration of relativistic electrons. We simulate the global distribution of...
Investigation of Unusual Solar Flare Effect on the Global Ionospheric Current System
Annadurai NMN, Hamid Nurul Shazana Abdul, Yamazaki Y and Yoshikawa A
Journal of Geophysical Research: Space Physics      2018   [Refereed]
Annadurai NMN, Hamid NSA and Yoshikawa A
SAINS MALAYSIANA   47(3) 595-601   Mar 2018   [Refereed]
© 2018 Penerbit Universiti Kebangsaan Malaysia. All Rights Reserved. Solar flare is referring to sun's activity define as sudden intense bright light coming from its surface. It can immediately affect earth's ionosphere system thus perturb any cur...
Anomalous ultra low frequency signals possibly linked with seismic activities in Sumatra, Indonesia
Takla EM, Khashaba A, Zaher M Abdel, Yoshikawa A and Uozumi T
NRIAG Journal of Astronomy and Geophysics      2018   [Refereed]
Study of the Solar Wind Influence on the Jovian Inner Magnetosphere Using an Ionospheric Potential Solver
Terada K, Tao C, Terada N, Kasaba Y, Kita H, Nakamizo A, Yoshikawa A, Ohtani S, Tsuchiya F and Kagitani M
Lunar and Planetary Science Conference   49    2018   [Refereed]
Yoshikawa Akimasa and Fujii Ryoichi
Electric Currents in Geospace and Beyond   427-443   Apr 2018   [Refereed][Invited]
© 2018 American Geophysical Union. The Cowling channel is a generic name of a current system forming inside a high conductivity band in which a secondary polarization electric field modifies the current flow. The polarization field is excited when...
Abidin Zamri Zainal, Jusoh MH, Abbas M and Yoshikawa Akimasa
Journal of Atmospheric and Solar-Terrestrial Physics      Jan 2018   [Refereed]
© 2018 Elsevier Ltd. The mantle electrical conductivity-depth structure of Malaysia was determined for the first time using solar quiet day ionospheric current (Sq) variations. Spherical harmonic analysis (SHA) was employed to separate the externa...
Abidin Zamri Zainal, Jusoh Mohamad Huzaimy, Abbas M, Bolaji OS and Yoshikawa Akimasa
Journal of Atmospheric and Solar-Terrestrial Physics      Jan 2018   [Refereed]
© 2018 Elsevier Ltd Magnetic records of the declination (D) component for the solar quiet year 2011–2013 obtained from Magnetic Data Acquisition System (MAGDAS) at Langkawi (Geog. Lon. 99.68∘E, Geog. Lat. 6.30∘N), Malaysia were utilized in this st...
The Time Derivative of the Horizontal Geomagnetic Field for the Low Latitude MAGDAS Langkawi Station for the Estimation of Geomagnetically Induced Current
Kasran Farah Adilah Mohd, Jusoh Mohamad Huzaimy, Yoshikawa Akimasa and Radzi Zahira Mohd
Space Science and Communication for Sustainability   57-71   2018   [Refereed]
Yagova Nadezda V., Heilig Balazs, Pilipenko Vyacheslav A., Yoshikawa Akimasa, Nosikova Nataliya S., Yumoto Kiyohumi, Reda Jan
EARTH PLANETS AND SPACE   69(May) 69:61 (WEB ONLY)   May 2017   [Refereed]
Mo XiaoHua, Zhang DongHe, Goncharenko Larisa, Zhang ShunRong, Hao YongQiang, Xiao Zuo, Pei JiaZheng, Yoshikawa Akimasa, Chau HaDuyen
SCIENCE CHINA-EARTH SCIENCES   60(4) 776-785   Apr 2017   [Refereed]
G. Q. Wang, M. Volwerk, T. L. Zhang, T. L. Zhang, D. Schmid, A. Yoshikawa
Journal of Geophysical Research: Space Physics   122 2889-2899   Mar 2017
©2017. American Geophysical Union. All Rights Reserved. A kink-like neutral sheet oscillation event observed by Cluster between 1436 and 1445 UT on 15 October 2004 has been investigated. The oscillations with periods between 40 and 60 s, observed ...
Hamid Nurul Shazana Abdul, Ismail Wan Nur Izzaty, Yoshikawa Akimasa
ADVANCED SCIENCE LETTERS   23(2) 1444-1447   Feb 2017   [Refereed]
Hamid Nurul Shazana Abdul, Ismail Wan Nur Izzaty, Yoshikawa Akimasa
ADVANCED SCIENCE LETTERS   23(2) 1357-1360   Feb 2017   [Refereed]
Analysis of Magnetic Field Variations Produced by Equatorial Electro-Jets
Lopez Ericson, Aldás Franklin and Yoshikawa Akimasa
Proceedings of the International Astronomical Union   13(S335) 125-127   2017   [Refereed]
Ikeda Akihiro, Uozumi Teiji, Yoshikawa Akimasa, Fujimoto Akiko, Abe Shuji, Nozawa Hiromasa, Shinohara Manabu
VIII INTERNATIONAL CONFERENCE SOLAR-TERRESTRIAL RELATIONS AND PHYSICS OF EARTHQUAKE PRECURSORS   20 1004   2017   [Refereed]
Yoshikawa Akimasa, Fujimoto Akiko, Ikeda Akihiro, Uozumi Teiji, Abe Shuji
VIII INTERNATIONAL CONFERENCE SOLAR-TERRESTRIAL RELATIONS AND PHYSICS OF EARTHQUAKE PRECURSORS   20 1013   2017   [Refereed]
Imajo Shun, Yoshikawa Akimasa, Uozumi Teiji, Ohtani Shin, Nakamizo Aoi and Chi PJ
Journal of Geophysical Research: Space Physics   122(8) 8589-8603   Aug 2017   [Refereed]
©2017. American Geophysical Union. All Rights Reserved. Pi2 magnetic oscillations on the dayside are considered to be produced by the ionospheric current that is driven by Pi2-associated electric fields from the high-latitude region, but this idea...
Monitoring and investigating space weather effects with meridional chain of instruments in Yakutia: a brief overview
Baishev DG, Samsonov SN, Moiseev AV, Boroyev RN, Stepanov AE, Kozlov VI, Korsakov AA, Toropov AA, Yoshikawa Akimasa and Yumoto Kiyohumi
Solar-Terrestrial Physics   3(2) 25-33   2017   [Refereed]
FEATURES OF FORMATION OF SMALL-SCALE WAVE DISTURBANCES DURING A SUDDEN MAGNETOSPHEREIC COMPRESSION
Moiseev Aleksey, Baishev Dmitry, Mishin Vladimir, Uozumi T, Yoshikawa Akimasa and Du A
Solar-Terrestrial Physics   3(2) 34-42   2017   [Refereed]
Ibrahim Siti Nurbaiti, Jusoh Mohamad Huzaimy, Sulaiman Ahmad Asari, Ahmad Siti Noor Aisyah, Makmud Mohd Zul Hilmey, Musta Baba, Abdullah Mardina, Asillam Mhd Fairos, Pathy Nyanasegari Bhoo and Hashim Mohd Helmy
International Journal of Simulation: Systems, Science and Technology   17(41) 30.1-30.8   Jan 2017   [Refereed]
© 2017, UK Simulation Society. All rights reserved. MAGDAS (Magnetic Data Acquisition System) is a magnetometer initiated by Kyushu University used to study space weather. The latest of real-time Magnetic Data Acquisition System of Circum-pan Paci...
Marshall RA, Kelly A, Van Der Walt T, Honecker A, Ong C, Mikkelsen D, Spierings A, Ivanovich G and Yoshikawa A
Space Weather   15(7) 895-916   Jul 2017   [Refereed]
©2017. American Geophysical Union. All Rights Reserved. Geomagnetic induced currents (GICs) have been considered an issue for high-latitude power networks for some decades. More recently, GICs have been observed and studied in power networks locat...
Meridional movement of northern and southern equatorial ionization anomaly crests in the East-Asian sector during 2002窶_003 SSW
Mo XiaoHua, Zhang DongHe, Goncharenko Larisa, Zhang ShunRong, Hao YongQiang, Xiao Zuo, Pei JiaZheng, Yoshikawa Akimasa and Chau HaDuyen
Science China Earth Sciences   60(4) 776-785   2017   [Refereed]
Ismail WNI, Hamid NSA, Abdullah M, Yoshikawa A and Uozumi T
Journal of Physics: Conference Series   852(1) 12019   Jun 2017   [Refereed]
© Published under licence by IOP Publishing Ltd. The equatorial electrojet (EEJ) is an eastward current flow around the dip equator in E-region of the ionosphere within the range of 90 to 120 km altitude. The longitudinal variation of EEJ was stud...
Hamid NSA, Liu H, Uozumi T, Yoshikawa A and Annadurai NMN
Journal of Physics: Conference Series   852(1) 12015   Jun 2017   [Refereed]
© Published under licence by IOP Publishing Ltd. Equatorial electrojet is an eastward flowing current at about ±3° dip equator. This current intensity is always higher during noontime as it is greatly influenced by the ionization of Earth ionosphe...
Longitudinal Profile of the Equatorial Electrojet Current and Its Dependence on Solar Activity
Hamid Nurul Shazana Abdul, Ismail Wan Nur Izzaty and Yoshikawa Akimasa
Advanced Science Letters   23(2) 1357-1360   2017   [Refereed]
Latitudinal Variation of Ionospheric Currents in Southeast Asian Sector
Hamid Nurul Shazana Abdul, Ismail Wan Nur Izzaty and Yoshikawa Akimasa
Advanced Science Letters   23(2) 1444-1447   2017   [Refereed]
Hui Debrup, Chakrabarty D, Sekar R, Reeves Geoffrey D, Yoshikawa A and Shiokawa K
Journal of Geophysical Research: Space Physics   122(5) 5568-5578   May 2017   [Refereed]
©2017. American Geophysical Union. All Rights Reserved. This study tries to bring out the fact that storm time substorms can compete and at times significantly contribute to the geomagnetically disturbed time prompt penetration electric field effe...
Rabiu A Babatunde, Folarin Olanike Olufunmilayo, Uozumi Teiji, Hamid Nurul Shazana Abdu land Yoshikawa Akimasa
Annales Geophysicae   35(3) 535-545   Apr 2017   [Refereed]
© 2017 Author(s). We examined the longitudinal variability of the equatorial electrojet (EEJ) and the occurrence of its counter electrojet (CEJ) using the available records of the horizontal component H of the geomagnetic field simultaneously reco...
High-atitude Pi2 pulsations associated with kink-like neutral sheet oscillations
Wang GQ, Volwerk M, Zhang TL, Schmid D and Yoshikawa A
Journal of Geophysical Research: Space Physics   122(3) 2889-2899   2017   [Refereed]
Bello SA, Abdullah M, Hamid NSA, Yoshikawa A and Olawepo AO
Advances in Space Research   60(2) 307-316   Jul 2017   [Refereed]
© 2017 COSPAR The ionospheric thickness (B0) and shape (B1) are bottomside profile parameters introduced by the International Reference Ionosphere (IRI) model. We have validated these parameters with the latest version of the IRI-2012 model and co...
Shun Imajo, Akimasa Yoshikawa, Teiji Uozumi, Shinichi Ohtani, Aoi Nakamizo, Sodnomsambuu Demberel, Boris Mikhailovich Shevtsov
Earth, Planets and Space   68 ROMBUNNO.R010‐P07 (WEB ONLY)   Dec 2016
© 2016 The Author(s). To clarify the effect of the dawn and dusk terminators on Pi2 pulsations, we statistically analyzed the longitudinal phase and amplitude structures of Pi2 pulsations at middle- to low-latitude stations (GMLat = 5.30°-46.18°) ...
NISHIMURA Yukitoshi, KIKUCHI Takashi, KIKUCHI Takashi, EBIHARA Yusuke, YOSHIKAWA Akimasa, IMAJO Shun, LI Wen, UTADA Hisashi
Earth, Planets and Space (Web)   68(Aug) 68:144 (WEB ONLY)   Aug 2016
IMAJO Shun, YOSHIKAWA Akimasa, UOZUMI Teiji, OHTANI Shinichi, NAKAMIZO Aoi, DEMBEREL Sodnomsambuu, SHEVTSOV Boris Mikhailovich
Earth, Planets and Space (Web)   68(Aug) 68:137 (WEB ONLY)   Aug 2016
Teiji Uozumi, A. Yoshikawa, A. Yoshikawa, S. Ohtani, S. Imajo, D. G. Baishev, A. V. Moiseev, K. Yumoto, K. Yumoto
Journal of Geophysical Research: Space Physics   121 6324-6340   Jul 2016
©2016. American Geophysical Union. All Rights Reserved. In this study, we examined middle- and low-latitude Pi2 events to address the following two issues regarding the well-known substorm current wedge (SCW) model for Pi2 pulsations: (1) the cent...
Susanta Kumar Bisoi, D. Chakrabarty, P. Janardhan, R. G. Rastogi, A. Yoshikawa, K. Fujiki, M. Tokumaru, Y. Yan
Journal of Geophysical Research A: Space Physics   121 3882-3904   May 2016
©2016. American Geophysical Union. All Rights Reserved. A detailed investigation is carried out to understand the prolonged (∼44 h) weakly southward interplanetary magnetic field (IMF-Bz) condition during 2–4 May 1998. In situ observations, during...
Simultaneity and asymmetry in the occurrence of counterequatorial electrojet along African longitudes
Rabiu A Babatunde, Folarin Olanike O, Uozumi Teiji and Yoshikawa Akimasa
Ionospheric Space Weather: Longitude and Hemispheric Dependences and Lower Atmosphere Forcing, Geophysical Monograph   220 21-31   2016   [Refereed]
Ohtani S and Yoshikawa A
Journal of Geophysical Research: Space Physics   121(11)    Nov 2016   [Refereed]
©2016. American Geophysical Union. All Rights Reserved. The auroral intensification at the poleward boundary of the auroral oval is often considered to be the ionospheric manifestation of the distant reconnection. In the present study, however, we...
Takahashi Kazue, Hartinger Michael D, Malaspina David M, Smith Charles W, Koga Kiyokazu, Singer Howard J, Frühauff Dennis, Baishev Dmitry G, Moiseev Alexey V and Yoshikawa Akimasa
Journal of Geophysical Research: Space Physics   121(9) 8428-8447   Sep 2016   [Refereed]
©2016. American Geophysical Union. All Rights Reserved. Ultralow frequency (ULF) waves generated in the ion foreshock are a well-known source of Pc3-Pc4 waves (7–100 mHz) observed in the dayside magnetosphere. We use data acquired on 10 April 2013...
Bolaji OS, Oyeyemi EO, Owolabi OP, Yamazaki Yosuke, Rabiu AB, Okoh D, Fujimoto A, Amor-Mazaudier C, Seemala GK and Yoshikawa A
Journal of Geophysical Research: Space Physics   121(8) 8055-8065   Aug 2016   [Refereed]
©2016. American Geophysical Union. All Rights Reserved. We present solar quiet (Sq) variation of the horizontal (H) magnetic field intensity deduced from Magnetic Data Acquisition System (MAGDAS) records over Africa during an unusual strong and pr...
Nishimura Yukitoshi, Kikuchi Takashi, Ebihara Yusuke, Yoshikawa Akimasa, Imajo Shun, Li Wen and Utada Hisashi
Earth, Planets and Space   68(1) 144   Dec 2016   [Refereed]
© 2016 The Author(s). We investigated evolution of ionospheric currents during sudden commencements using a ground magnetometer network in conjunction with an all-sky imager, which has the advantage of locating field-aligned currents much more acc...
Tsuda Toshitaka, Yamamoto Mamoru, Hashiguchi Hiroyuki, Shiokawa Kazuo, Ogawa Yasunobu, Nozawa Satonori, Miyaoka Hiroshi and Yoshikawa Akimasa
Radio Science   51(9) 1587-1599   Sep 2016   [Refereed]
©2016. The Authors. The solar energy can mainly be divided into two categories: the solar radiation and the solar wind. The former maximizes at the equator, generating various disturbances over a wide height range and causing vertical coupling pro...
Initial deflection of middle0atitude Pi2 pulsations in the premidnight sector: Remote detection of oscillatory upward field-aligned current at substorm onset
Uozumi Teiji, Yoshikawa A, Ohtani S, Imajo S, Baishev DG, Moiseev AV and Yumoto K
Journal of Geophysical Research: Space Physics   121(7) 6324-6346   2016   [Refereed]
The prolonged southward IMF-Bz event of 2-4 May 1998: Solar, interplanetary causes and geomagnetic consequences
Bisoi Susanta Kumar, Chakrabarty D, Janardhan P, Rastogi RG, Yoshikawa A, Fujiki K, Tokumaru M and Yan Y
Journal of Geophysical Research: Space Physics   121(5) 3882-3904   2016   [Refereed]
Long-term EEJ variations by using the improved EE-index
Fujimoto Akiko, Uozumi Teiji, Abe Shuji, Matsushita Hiroki, Imajo Shun, Ishitsuka Jose K and Yoshikawa Akimasa
Sun and Geosphere   11(1) 37-47   2016   [Refereed]
Nurul Shazana Abdul Hamid, Huixin Liu, Huixin Liu, Teiji Uozumi, Akimasa Yoshikawa, Akimasa Yoshikawa
Earth, Planets and Space   67    Dec 2015
© 2015 Hamid et al. In this study, we constructed an empirical model of the equatorial electrojet (EEJ), including local time and longitudinal dependence, based on simultaneous data from 12 magnetometer stations located in six longitude sectors. A...
KALITA Bitap Raj, BHUYAN Pradip Kumar, YOSHIKAWA Akimasa
Earth Planets Space (Web)   67(Nov) WEB ONLY   Nov 2015
TANAKA Yoshimasa, TANAKA Yoshimasa, OGAWA Yasunobu, OGAWA Yasunobu, KADOKURA Akira, KADOKURA Akira, PARTAMIES Noora, PARTAMIES Noora, WHITER Daniel, ENELL Carl‐Fredrik, BRAENDSTROEM Urban, SERGIENKO Tima, GUSTAVSSON Bjoern, KOZLOVSKY Alexander, MIYAOKA Hiroshi, MIYAOKA Hiroshi, YOSHIKAWA Akimasa
Earth Planets Space (Web)   67(Nov) WEB ONLY   Nov 2015
O. S. Bolaji, A. B. Rabiu, A. B. Rabiu, O. R. Bello, A. Yoshikawa, K. Yumoto, O. O. Odeyemi, O. Ogunmodimu
Journal of Geophysical Research: Space Physics   120 3883-3898   May 2015
©2015. American Geophysical Union. All Rights Reserved. We have used chains of Magnetic Data Acquisition System (MAGDAS) magnetometer records of the horizontal (H) and vertical (Z) magnetic field intensities during September 2008 to August 2009 (y...
Suaidi Ahadi, Suaidi Ahadi, Nanang Tyasbudi Puspito, Gunawan Ibrahim, Sarmoko Saroso, Kiyohumi Yumoto, Akimasa Yoshikawa, L. Muzli
Journal of Mathematical and Fundamental Sciences   47 84-103   Jan 2015
© 2015, Published by ITB Journal Publisher. Eleven strong Sumatran earthquakes, with their epicenter less than 550 km away from the Kototabang (KTB) geomagnetic station (2007-2012), were studied to examine the occurrence of anomalous ultra-low fre...
Possible relationship between exogenous parameters and seismicity: Ultra-Low Frequency (ULF) of Magnetic Pulsation
Huzaimy JM, Adilah MKF, Aisyah ASN, Liu H, Yumoto K, Asillam F, Pathy NB and Yoshikawa A
Sun and Geosphere   10 127-132   2015   [Refereed]
Magnetic and Ionospheric Observations in the Far Eastern Region of Russia During the Magnetic Storm of 5 April 2010
Baishev DG, Moiseyev AV, Boroyev RN, Kobyakova SE, Stepanov AE, Mandrikova OV, Solovev IS, Khomutov S Yu, Polozov Yu A and Yoshikawa A
Sun and Geosphere   10(2) 133-140   2015   [Refereed]
Hamid Nurul Shazana Abdul, Liu Huixin, Uozumi Teiji and Yoshikawa Akimasa
Earth, Planets and Space   67(1) 205   Dec 2015   [Refereed]
Kalita Bitap Raj, Bhuyan Pradip Kumar and Yoshikawa Akimasa
Earth, Planets and Space   67(1) 186   Dec 2015   [Refereed]
© 2015 Kalita et al. The characteristics of the F2 layer parameters NmF2 and hmF2 over Dibrugarh (27.5° N, 95° E, 17° N geomagnetic, 43° dip) measured by a Canadian Advanced Digital Ionosonde (CADI) for the period of August 2010 to July 2014 are r...
Tanaka Yoshimasa, Ogawa Yasunobu, Kadokura Akira, Partamies Noora, Whiter Daniel, Enell Carl-Fredrik, Brandstom Urban, Sergienko Tima, Gustavsson Bjorn, Kozlovsky Alexander, Hiroshi Miyaoka, and Akimasa Yoshikawa
Earth, Planets and Space   67(1) 182   Dec 2015   [Refereed]
© 2015 Tanaka et al. We present three eastward-expanding auroral surge (EEAS) events that were observed intermittently at intervals of about 15 min in the post-midnight sector (01:55-02:40 MLT) by all-sky imagers and magnetometers in northern Euro...
Ahmad SNA, Jusoh MH, Kasran FAM, Abdullah Mardina, Veenadhari B, Uozumi T, Abe S, Yoshikawa A and Cardinal MG
Space Science and Communication (IconSpace), 2015 International Conference on   2015-September 256-261   Sep 2015   [Refereed]
© 2015 IEEE. This paper presents variations of Ultra Low Frequency (ULF) and Very Low Frequency (VLF) during moderate geomagnetic storm using ground based observatories, Magnetic Data Acquisition System (MAGDAS)/Circum-Pan Magnetic Network (CPMN) ...
Hamid Nurul Shazana Abdul, Liu Huixin, Uozumi T, Gopir Geri Kibe, Hadin HA and Yoshikawa A
Space Science and Communication (IconSpace), 2015 International Conference on   2015-September 262-266   Sep 2015   [Refereed]
© 2015 IEEE. In the E layer of equatorial ionosphere, the equatorial electrojet (EEJ) current interacts with the global Sq current and caused abnormally large amplitude of geomagnetic field component measured at the magnetic dip equator station. I...
Moiseyev AV, Popov VI, Mullayarov VA, Samsonov SN, Du A and Yoshikawa A
Cosmic Research   53(4) 257-266   Jul 2015   [Refereed]
© 2015, Pleiades Publishing, Ltd. The space–time characteristics of geomagnetic pulsations during a sudden impulse on August 4, 2010 have been analyzed using ground-based and satellite observations. It has been indicated that two types of geomagne...
Lorentz Dispersion Law from classical Hydrogen electron orbits in AC electric field via geometric algebra
Perez Uzziel, Ang Angeleene S, Sugon Jr Quirino M, McNamara Daniel J and Yoshikawa Akimasa
arXiv preprint arXiv:1507.04509      2015   [Refereed]
Spatial variability of solar quiet fields along 96 magnetic meridian in Africa: results from MAGDAS
Bolaji OS, Rabiu AB, Bello OR, Yoshikawa A, Yumoto K, Odeyemi OO and Ogunmodimu O
Journal of Geophysical Research: Space Physics   120(5) 3883-3898   2015   [Refereed]
Counter electrojet events using Ilorin observations during a low solar activity period
Bolaji OS, Oyeyemi EO, Fagundes PR, de Abreu AJ, de Jesus R, Rabiu AB and Yoshikawa A
The African Review of Physics   9    2015   [Refereed]
Takla EM, Odah H, Elaal EM Abd, Yoshikawa A, Kawano H and Uozumi T
Arabian Journal of Geosciences   8(10) 8497-8503   Oct 2015   [Refereed]
© 2015, Saudi Society for Geosciences. High-resolution (1-s) geomagnetic data from the MAGDAS Network, Kyushu University, Japan, were examined to detect any local anomalous geomagnetic behavior that is possibly linked with the eruption of the Aso ...
Imajo S, Yoshikawa A, Uozumi T, Ohtani S, Nakamizo A, Marshall R, Shevtsov BM, Akulichev VA, Sukhbaatar U and Liedloff A
Journal of Geophysical Research: Space Physics   120(3) 2088-2098   Mar 2015   [Refereed]
©2015. American Geophysical Union. All Rights Reserved. We examined Pi2 pulsations observed simultaneously at low-latitude stations (L = 1.15 - 2.33) around the dawn terminator. Those Pi2 pulsations observed in the sunlit region were polarized in ...
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,
Advances in Space Research   55(4) 1180-1189   2015   [Refereed]
Hamid Nurul Shazana Abdul, Liu Huixin, Uozumi Teiji, Yumoto Kiyohumi, Veenadhari Bhaskara, Yoshikawa Akimasa, Avendano Sanchez Jairo
EARTH PLANETS AND SPACE   66(Oct) WEB ONLY   Oct 2014   [Refereed]
Imajo Shun, Yumoto Kiyohumi, Uozumi Teiji, Kawano Hideaki, Abe Shuji, Ikeda Akihiro, Koga Kiyokazu, Matsumoto Haruhisa, Obara Takahiro, Marshall Richard, Akulichev Victor A., Mahrous Ayman, Liedloff Adam, Yoshikawa Akimasa
EARTH PLANETS AND SPACE   66(Apr) WEB ONLY   Apr 2014   [Refereed]
Jing Liu, Jing Liu, Jing Liu, Libo Liu, Libo Liu, Takuji Nakamura, Biqiang Zhao, Biqiang Zhao, Baiqi Ning, Baiqi Ning, A. Yoshikawa
Journal of Geophysical Research: Space Physics   119 7716-7731   Jan 2014
©2014. American Geophysical Union. All Rights Reserved. Multiple instrumental observations including GPS total electron content (TEC), foF2and hmF2from ionosondes, vertical ion drift measurements from Communication/Navigation Outage Forecasting Sy...
Musafar L Muhammad K, Sugitomo W, Djamaluddin T, Yoshikawa A and Uozumi T
International Journal of Technology   5(3) 269-276   Jan 2014   [Refereed]
© 2014 The Authors. Since the discovery of the radiation belt decades ago, there still remain some fundamental questions as to which one is the mechanism responsible for the acceleration of electrons. Groundbased Pc5 magnetic pulsation during the ...
Ahmad Siti Noor Aisyah, Jusoh Mohamad Huzaimy, Shariff Khairul Khaizi Mohd, Abdullah Mardina, Asillam Mhd Fairos, Veenadhari B, Uozumi T, Abe S, Yoshikawa A and Cardinal MG
WSEAS Transactions on Signal Processing   10(1) 337-344   Jan 2014   [Refereed]
Space weather study has increasingly attracts the attention of many scientists to explore the interaction between solar activity and geomagnetic activity. Observation on Pc5 geomagnetic pulsations with periods ranging from 150-600seconds due to so...
Wang GQ, Volwerk Martin, Nakamura Rumi, Boakes Peter, Zhang TL, Yoshikawa A and Baishev DG
Journal of Geophysical Research: Space Physics   119(12) 10078-10091   Jan 2014   [Refereed]
©2014. American Geophysical Union. All Rights Reserved. A wavy current sheet event observed on 15 October 2004 between 1235 and 1300 UT has been studied by using Cluster and ground-based magnetometer data. Waves propagating from the tail center to...
Ieda A, Oyama S, Vanhamäki H, Fujii R, Nakamizo A, Amm O, Hori T, Takeda M, Ueno G and Yoshikawa A
Journal of Geophysical Research: Space Physics   119(12) 10397-10415   Jan 2014   [Refereed]
©2014. American Geophysical Union. All Rights Reserved. The solar zenith angle (SZA) dependence of the conductance is studied and a simple theoretical form for the Hall-to-Pedersen conductance ratio is developed, using the peak plasma production h...
Anomalous geomagnetic variations associated with the volcanic activity of the Mayon volcano, Philippines during 2009-2010
Takla EM, Yoshikawa A, Kawano H, Uozumi T and Abe S
NRIAG Journal of Astronomy and Geophysics   3(2) 130-136   2014   [Refereed]
Cardinal MG, Yoshikawa A, Kawano H, Liu H, Watanabe M, Abe S, Uozumi T, Maeda G, Hada T and Yumoto K
Space Weather   12(10) 571-576   Jan 2014   [Refereed]
A case study of ionospheric storm effects during long-lasting southward IMF Bz-driven geomagnetic storm
Liu Jing, Liu Libo, Nakamura Takuji, Zhao Biqiang, Ning Baiqi and Yoshikawa A
Journal of Geophysical Research: Space Physics   119(9) 7716-7731   2014   [Refereed]
Yamazaki Yosuke, Richmond Arthur D, Maute Astrid, Wu Qian, Ortland David A, Yoshikawa Akimasa, Adimula Isaac Abiodun, Rabiu Babatunde, Kunitake Manabu and Tsugawa Takuya
Journal of Geophysical Research: Space Physics   119(4) 3150-3461   Jan 2014   [Refereed]
Quiet time daily variations of the geomagnetic field near the magnetic equator due to the equatorial electrojet are simulated using the National Center for Atmospheric Research Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIE...
Teramoto M, Nishitani N, Pilipenko V, Ogawa T, Shiokawa K, Nagatsuma T, Yoshikawa A, Baishev D and Murata KT
Journal of Geophysical Research: Space Physics   119(5) 3444-3462   Jan 2014   [Refereed]
We investigated Pi2 pulsations in the nightside ionosphere that began at 14:15 UT (2315 LT) on 11 July 2010, and they were observed with high-temporal (8 s) resolution by beam 4 of the Super Dual Auroral Radar Network (SuperDARN) Hokkaido radar. T...
Suliman Magdi E Yousif, Yoshikawa A, Yumoto K, Kawano H, Uozumi Teiji, Abe S, Cardinal MG, Palangio Paolo and Kaisan Lynn
Space Science and Communication (IconSpace), 2013 IEEE International Conference on   150-155   Dec 2013   [Refereed]
Associative relationship between magnetospheric ULF waves in the Pc 5 range (1.7-6.7 mHz) and high energetic particles on the geosynchronous orbit has been investigated in detail in past studies. In particular, there has been interest in the effic...
R. L. Lysak, A. Yoshikawa
Magnetospheric ULF Waves: Synthesis and New Directions   169 289-306   Mar 2013
© 2006 by the American Geophysical Union. The strong inhomogeneities in plasma parameters in the ionosphere and adjacent regions can trap waves in the upper end of the ULF range (Pc1/Pi1). The topside ionosphere is characterized by a rapidly incre...
S. Ohtani, T. Uozumi, H. Kawano, A. Yoshikawa, H. Utada, T. Nagatsuma, K. Yumoto
Journal of Geophysical Research: Space Physics   118 3637-3646   Jan 2013
The equatorial electrojet (EEJ) is driven by zonal electric fields, which are known to be well correlated with the interplanetary electric field and therefore with the interplanetary magnetic field (IMF) BZcomponent. In the present study, we inves...
The response of the dayside equatorial electrojet to step-like changes of IMF BZ
Ohtani Shinichi, Uozumi Teiji, Kawano Hideaki, Yoshikawa Akimasa, Utada Hisashi, Nagatsuma Tsutomu and Yumoto Kiyohumi
Journal of Geophysical Research: Space Physics   118(6) 3637-3646   2013   [Refereed]
Shi Run, Liu Huixin, Yoshikawa Akimasa, Zhang Beichen and Ni Binbin
Journal of Geophysical Research: Space Physics   118(6) 2903-2910   Jan 2013   [Refereed]
A one-dimensional kinetic model is constructed to simulate the electron acceleration by inertial Alfven waves. The electrons are divided into cold and hot electrons and treated separately. Cold components are described by the fluid equation and ho...
Yoshikawa A, Amm O, Vanhamaki H and Fujii R
Journal of Geophysical Research: Space Physics   118(10) 6405-6415   Jan 2013   [Refereed]
Decomposition of horizontally extended current system into components in the polarization processes and extraction of Cowling channel defined in the companion paper embedded in the total current system are numerically demonstrated. We successfully...
Amm O, Fujii R, Vanhamaki H, Yoshikawa A and Ieda A
Journal of Geophysical Research: Space Physics   118(5) 2428-2437   Jan 2013   [Refereed]
We devise an approach to calculate the polarization electric field in the ionosphere, when the ionospheric conductances, the primary (modeled) or the total (measured) electric field, and the Cowling efficiency are given. In contrast to previous st...
Yoshikawa A, Amm O, Vanhamaki H, Nakamizo A and Fujii R
Journal of Geophysical Research: Space Physics   118(10) 6416-6425   Jan 2013   [Refereed]
We present the first complete formulation of the coupling between the ionospheric horizontal currents (including Hall currents) and the field-aligned currents (FAC) via shear Alfven waves, which can describe the formation of a Cowling channel with...
Vanhamaki H, Yoshikawa A, Amm O and Fujii R
Journal of Geophysical Research: Space Physics   117(A8)    Jan 2012   [Refereed]
Energy flow is an important aspect of magnetosphere-ionosphere coupling. Electromagnetic energy is transported as Poynting flux from the magnetosphere to the ionosphere, where it is dissipated as Joule heating. Recently Richmond derived an "Equipo...
Tanaka Y-I, Ebihara Y, Saita S, Yoshikawa A, Obana Y and Weatherwax AT
Journal of Geophysical Research: Space Physics   117(A9)    Jan 2012   [Refereed]
We investigate the characteristics of poleward moving auroral arcs (PMAAs) observed with the all-sky monochromatic imager at the South Pole Station (74.3°CGLAT) in the interval 08:00-11:00 MLT on July 8, 2004. During this period, Pc 5 geomagnetic ...
Fujii R, Amm O, Vanhamaki H, Yoshikawa A and Ieda A
Journal of Geophysical Research: Space Physics   117(A11)    Dec 2012   [Refereed]
A physical process for the latitudinal motion of an auroral arc based on the four-side bound Cowling channel model is proposed. Assuming that an upward field-aligned current (FAC) is associated with the auroral arc that forms a Cowling channel wit...
徳永 旭将, 池田 大輔, 中村 和幸, 樋口 知之, 吉川 顕正, 魚住 禎司, 藤本 晶子, 森岡 昭, 湯元 清文
情報処理学会論文誌数理モデル化と応用(TOM)   4(3) 14-34   Jul 2011
一般に,前兆現象は突発現象にそのものに比べて非常に目立ちにくく,その開始時刻は曖昧である.従来よく用いられてきた変化点検出法を適用した場合,このような微小で緩慢な変化は見逃されやすい.Tokunagaら(2010)では,Ideら(2005)の提案した特異スペクトル分析を応用した変化点検出法(SST)を,多次元データを用いたアルゴリズム(MSST)へと拡張することで,鋭敏に前兆現象の開始時刻を推定できることを示した.MSSTは,緩慢な変化も検出できる鋭敏な手法であるが,実データへの適用では誤...
A. Yoshikawa, O. Amm, H. Vanhamäki, R. Fujii
Journal of Geophysical Research: Space Physics   116    Jan 2011
In order to correctly describe the dynamical behavior of the magnetosphere-ionosphere (MI) coupling system and the scale-dependent auroral process, we develop a synthesis formulation that combines the process of (1) the inverse Walen separation of...
YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   130th ROMBUNNO.B006-37   2011
Identification of full-substorm onset from ground-magnetometer data by singular value transformation
Tokunaga Terumasa, Yumoto Kiyohumi, Uozumi Teiji, Yoshikawa Akimasa, Nakamura Kazuyuki, Higuchi Tomoyuki, Ikeda Daisuke andGroup CPMN
Memoirs of the Faculty of Sciences, Kyushu University, Series D, Earth and Planetary Sciences   32(3) 63-73   2011   [Refereed]
Uozumi Teiji, Yumoto K, Tokunaga T, Solovyev SI, Shevtsov BM, Marshall R, Liou K, Ohtani S, Abe S and Ikeda A
Journal of Geophysical Research: Space Physics   116(A6)    Jan 2011   [Refereed]
In this report we present a temporal relationship between ground Pi2 and auroral kilometric radiation (AKR). We analyzed six isolated substorm events, which were observed by the MAGDAS/CPMN ground magnetometer network and the plasma wave instrumen...

Misc

 
安倍松侑太, 河野英昭, 河野英昭, 東尾奈々, 越石英樹, 松本晴久, MOISEEV A. V., BAISHEV D. G., 魚住禎司, 阿部修司, 吉川顕正, 吉川顕正
宇宙航空研究開発機構特別資料 JAXA-SP-(Web)   (17-006) 1‐7 (WEB ONLY)   Jan 2018
ABE Shuji, YOSHIKAWA Akimasa, UOZUMI Teiji, FUJIMOTO Akiko
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM13‐P08 (WEB ONLY)   2018
IKEDA Akihiro, UOZUMI Teiji, YOSHIKAWA Akimasa, FUJIMOTO Akiko, NOZAWA Hiromasa
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM12‐P17 (WEB ONLY)   2018
TANAKA Yoshimasa, OGAWA Yasunobu, KADOKURA Akira, GUSTAVSSON Bjorn, PARTAMIES Noora, KAURISTIE Kirsti, WHITER Daniel, ENELL Carl‐fredrik, BRANDSTROM Urban, SERGIENKO Tima, KOZLOVSKY Alexander, VANHAMAKI Heikki, YOSHIKAWA Akimasa, MIYAOKA Hiroshi
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM15‐P24 (WEB ONLY)   2018
NAKAMIZO Aoi, YOSHIKAWA Akimasa, TANAKA Takashi
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM15‐P25 (WEB ONLY)   2018
TAKAHASHI Naoko, SEKI Kanako, TERAMOTO Mariko, FOK Mei‐Ching, MATSUOKA Ayako, HIGASHIO Nana, SHIOKAWA Kazuo, BAISHEV Dmitry, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM16‐13 (WEB ONLY)   2018
FUJIMOTO Akiko, IKEDA Akihiro, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM13‐04 (WEB ONLY)   2018
BAEK Mingi, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.MIS09‐P03 (WEB ONLY)   2018
TERADA Koichiro, TAO Chihiro, TERADA Naoki, KASABA Yasumasa, KITA Hajime, NAKAMIZO Aoi, YOSHIKAWA Akimasa, OHTANI Shinichi, TSUCHIYA Fuminori, KAGITANI Masato, SAKANOI Takeshi, MURAKAMI Go, YOSHIOKA Kazuo, KIMURA Tomoki, YAMAZAKI Atsushi, YOSHIKAWA Ichiro
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PPS01‐P11 (WEB ONLY)   2018
YOSHIKAWA Akimasa, OHTANI Shinichi, NAKAMIZO Aoi, IMAJO Shun
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM13‐14 (WEB ONLY)   2018
YOSHIKAWA Akimasa, OHTANI Shinichi, SHI Run
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.PEM17‐02 (WEB ONLY)   2018
山本衛, 橋口浩之, 宮岡宏, 小川泰信, 塩川和夫, 野澤悟徳, 吉川顕正, 津田敏隆
日本地球惑星科学連合大会予稿集(Web)   2018 ROMBUNNO.U08‐P04 (WEB ONLY)   2018
藤田浩輝, 花田俊也, 吉川顕正, 山岡均, 柳沢俊史, 松本晴久, 神谷浩紀, 北澤幸人, MARKKANEN Jussi, 小川泰信
宇宙科学技術連合講演会講演集(CD-ROM)   62nd ROMBUNNO.1C19   2018
清水千春, 佐藤光輝, 高橋幸弘, 本郷保二, 土屋史紀, 阿部修司, 吉川顕正
大気電気学会誌   11(1) 59‐60   Nov 2017
阿部修司, 花田俊也, 吉川顕正, 平井隆之, 河本聡美
宇宙航空研究開発機構特別資料 JAXA-SP-(Web)   (16-011) 557‐558 (WEB ONLY)   Mar 2017
河野英昭, 河野英昭, 小串修, 安倍松侑太, 東尾奈々, 松本晴久, MOISEEV A. V., BAISHEV D. G., 魚住禎司, 阿部修司, 吉川顕正, 吉川顕正
宇宙航空研究開発機構特別資料 JAXA-SP-(Web)   (16-010) 57‐63 (WEB ONLY)   Feb 2017
Long-term forecasts of space debris environment associated with space weather activities
Abe Shuji, Hanada Toshiya, Yoshikawa Akimasa, Hirai Takayuki and Kawamoto Satomi
JAXA Special Publication: Proceedings of the 7th Space Debris Workshop   (557) 557   2017   [Refereed]
OHTANI Shinichi, MOTOBA Tetsuo, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R006‐13 (WEB ONLY)   2017
IKEDA Akihiro, UOZUMI Teiji, YOSHIKAWA Akimasa, FUJIMOTO Akiko, ABE Shuji, NOZAWA Hiromasa
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM12‐P21 (WEB ONLY)   2017
SHINBORI Atsuki, KIKUCHI Takashi, ARAKI Tohru, IKEDA Akihiro, UOZUMI Teiji, UTADA Hisashi, HO Commodore Romeo Isidre, NAGATSUMA Tsutomu, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM14‐P11 (WEB ONLY)   2017
IMAJO Shun, NOSE Masahito, HIGASHIO Nana, KOSHIISHI Hideki, NOMURA Reiko, KOGA Kiyokazu, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.S001‐P30 (WEB ONLY)   2017
FUJIMOTO Akiko, YOSHIKAWA Akimasa, UOZUMI Teiji, ABE Shuji, MATSUSHITA Hiroki
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM15‐P15 (WEB ONLY)   2017
FUJIMOTO Akiko, MATSUOKA Ayako, YOSHIKAWA Akimasa, TERAMOTO Mariko, NOMURA Reiko, TANAKA Yoshimasa, SHINOHARA Manabu
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.S001‐P11 (WEB ONLY)   2017
UOZUMI Teiji, YOSHIKAWA Akimasa, OHTANI Shinichi, BAISHEV D G, MOISEYEV A V, SHEVTSOV B M
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM15‐P16 (WEB ONLY)   2017
HAMID Nurul Shazana Abdul, ISMAIL Wan Nur Izzaty, ABDULLAH Mardina, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM14‐P17 (WEB ONLY)   2017
YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM14‐07 (WEB ONLY)   2017
AKIYAMA Takafumi, YOSHIKAWA Akimasa, FUJIMOTO Akiko, UOZUMI Teiji
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R010‐P16 (WEB ONLY)   2017
NAKAMIZO Aoi, YOSHIKAWA Akimasa, YOSHIKAWA Akimasa, TANAKA Takashi
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM14‐23 (WEB ONLY)   2017
IKEDA Akihiro, UOZUMI Teiji, YOSHIKAWA Akimasa, FUJIMOTO Akiko, ABE Shuji, NOZAWA Hiromasa, SHINOHARA Manabu
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R010‐P17 (WEB ONLY)   2017
TSUDA Toshitaka, YAMAMOTO Mamoru, HASHIGUCHI Hiroyuki, MIYAOKA Hiroshi, OGAWA Yasunobu, SHIOKAWA Kazuo, NOZAWA Satonori, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM15‐01 (WEB ONLY)   2017
ISHISAKA Keigo, ABE Takumi, KUMAMOTO Atsushi, TANAKA Makoto, YOSHIKAWA Akimasa, MATSUSHITA Hiroki
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R005‐P11 (WEB ONLY)   2017
藤田浩輝, 板谷優輝, 花田俊也, 吉川顕正, 山岡均, 柳沢俊史, 松本晴久, 神谷浩紀, 北澤幸人, 小川泰信
宇宙科学技術連合講演会講演集(CD-ROM)   61st ROMBUNNO.2K11   2017
寺田綱一朗, 垰千尋, 土屋史紀, 笠羽康正, 北元, 中溝葵, 吉川顕正, 吉川顕正, 大谷晋一, 土屋史紀, 鍵谷将人, 坂野井健, 村上豪, 吉岡和夫, 木村智樹, 山崎敦, 吉川一朗
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PPS01‐P03 (WEB ONLY)   2017
安倍松侑太, 河野英昭, 東尾奈々, 松本晴久, MOISEEV Alexey, BAISHEV Dmitry, 魚住禎司, 阿部修司, 吉川顕正, 吉川顕正
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R006‐P19 (WEB ONLY)   2017
中原美音, 吉川顕正, 魚住禎司, 藤本晶子, 松下拓輝
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R010‐P14 (WEB ONLY)   2017
西口俊弥, 吉川顕正, 藤本晶子, 松下拓輝
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R010‐02 (WEB ONLY)   2017
大筆想, 河野英昭, 津川卓也, 西岡未知, 塩川和夫, 大塚雄一, 魚住禎司, 阿部修司, 吉川顕正, 吉川顕正
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R005‐P14 (WEB ONLY)   2017
中原美音, 松下拓輝, 吉川顕正, 魚住禎司, 藤本晶子, 阿部修司
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM12‐P28 (WEB ONLY)   2017
寺田綱一朗, 垰千尋, 寺田直樹, 笠羽康正, 北元, 中溝葵, 吉川顕正, OHTANI Shinichi, 土屋史紀, 鍵谷将人, 坂野井健, 村上豪, 吉岡和夫, 木村智樹, 山崎敦, 吉川一朗
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R009‐09 (WEB ONLY)   2017
阿部修司, 花田俊也, 吉川顕正, 平井隆之, 河本聡美
日本地球惑星科学連合大会予稿集(Web)   2017 ROMBUNNO.PEM15‐P17 (WEB ONLY)   2017
青柳優介, 吉川顕正
地球電磁気・地球惑星圏学会総会及び講演会(Web)   142nd ROMBUNNO.R005‐P09 (WEB ONLY)   2017
安宅祐香, 石坂圭吾, 阿部琢美, 田中真, 熊本篤志, 吉川顕正, 松下拓輝
電気関係学会北陸支部連合大会講演論文集(CD-ROM)   2016 ROMBUNNO.C‐12   Sep 2016
花田 俊也, 阿部 修司, 吉川 顕正, 藤田 浩輝
宇宙科学技術連合講演会講演集   60    Sep 2016
小串修, 河野英昭, 河野英昭, 東尾奈々, 松本晴久, MOISEEV A. V., BAISHEV D. G., 魚住禎司, 阿部修司, 湯元清文, 湯元清文, 吉川顕正, 吉川顕正
宇宙航空研究開発機構特別資料 JAXA-SP-   (15-012) 271-276   Mar 2016
HANADA Toshiya, ABE Shuji, YOSHIKAWA Akimasa, FUJITA Koki
宇宙科学技術連合講演会講演集(CD-ROM)   60th ROMBUNNO.1F03   2016
SHIMIZU Chiharu, SATO Mitsuteru, TAKAHASHI Yukihiro, TSUCHIYA Fuminori, HONGO Yasuji, ABE Shuji, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.HDS07‐05 (WEB ONLY)   2016
ONOUE Sakiko, KAWANO Hideaki, UOZUMI Teiji, SHEVTSOV Boris, KHOMUTOV Sergey, PODDELSKIY Igor, MARSHALL Richard, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PEM18‐12 (WEB ONLY)   2016
NAKAMIZO Aoi, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PEM07‐P10 (WEB ONLY)   2016
ABE Shuji, MATSUSHITA Hiroki, NAWATA Yukari, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PEM04‐P14 (WEB ONLY)   2016
IMAJO Shun, NISHIMURA Yukitoshi, YOSHIKAWA Akimasa, UOZUMI Teiji, OHTANI Shinichi, NAKAMIZO Aoi, ANGELOPOULOS Vassilis, MENDE Stephen
極域科学シンポジウム(Web)   7th OS_Imajo_00096_01 (WEB ONLY)   2016
YOSHIKAWA Akimasa, YOSHIKAWA Akimasa, ABE Shuji, UOZUMI Teiji, FUJIMOTO Akiko, MATSUSHITA Hiroki, KAWANO Hideaki, KAWANO Hideaki
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PEM09‐09 (WEB ONLY)   2016
YOSHIKAWA Akimasa
極域科学シンポジウム(Web)   7th OS_Yoshikawa_00129_01 (WEB ONLY)   2016
FUJIMOTO Akiko, UOZUMI Teiji, ABE Shuji, MATSUSHITA Hiroki, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R010‐13 (WEB ONLY)   2016
UOZUMI Teiji, YOSHIKAWA Akimasa, OHTANI Shinichi, IMAJO Shun, BAISHEV Dmitry, MOISEEV Alexey, SHEVTSOV Boris
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R006‐P46 (WEB ONLY)   2016
KAWANO Hideaki, OGUSHI Osamu, ABEMATSU Yuta, HIGASHIO Nana, MATSUMOTO Haruhisa, MOISEEV Alexey, BAISHEV Dmitry, UOZUMI Teiji, ABE Shuji, YOSHIKAWA Akimasa, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R006‐18 (WEB ONLY)   2016
SHINBORI Atsuki, KIKUCHI Takashi, ARAKI Tohru, IKEDA Akihiro, UOZUMI Teiji, UTADA Hisashi, NAGATSUMA Tsutomu, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R010‐08 (WEB ONLY)   2016
IMAJO Shun, NISHIMURA Yukitoshi, YOSHIKAWA Akimasa, UOZUMI Teiji, OHTANI Shinichi, NAKAMIZO Aoi, ANGELOPOULOS Vassilis, MENDE Stephen, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R006‐32 (WEB ONLY)   2016
YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R006‐19 (WEB ONLY)   2016
IKEDA Akihiro, UOZUMI Teiji, YOSHIKAWA Akimasa, FUJIMOTO Akiko, ABE Shuji, NOZAWA Hiromasa, SHINOHARA Manabu
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R010‐P08 (WEB ONLY)   2016
SHIMIZU Chiharu, SATO Mitsuteru, TAKAHASHI Yukihiro, TSUCHIYA Fuminori, HONGO Yasuji, ABE Shuji, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R005‐P02 (WEB ONLY)   2016
阿部修司, 花田俊也, 吉川顕正, 平井隆之, 河本聡美
宇宙科学技術連合講演会講演集(CD-ROM)   60th ROMBUNNO.1F04   2016
海老原祐輔, 石井守, 亘慎一, 後藤忠徳, 藤田茂, 菊池崇, 田中高史, 久保田康文, 吉川顕正, 片岡龍峰, 吉村純, 中村紗都子
宇宙科学技術連合講演会講演集(CD-ROM)   60th ROMBUNNO.1F09   2016
阿部琢美, 石坂圭吾, 熊本篤志, 田中真, 高橋隆男, 松下拓輝, 吉川顕正
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PEM16‐10 (WEB ONLY)   2016
寺田綱一朗, 寺田直樹, 笠羽康正, 北元, 垰千尋, 中溝葵, 吉川顕正, 吉川顕正, 大谷晋一, 土屋史紀, 鍵谷将人, 坂野井健, 村上豪, 吉岡和夫, 木村智樹, 山崎敦, 吉川一朗
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PCG21‐P12 (WEB ONLY)   2016
安宅祐香, 石坂圭吾, 阿部琢美, 田中真, 熊本篤志, 吉川顕正, 松下拓輝
日本地球惑星科学連合大会予稿集(Web)   2016 ROMBUNNO.PEM16‐08 (WEB ONLY)   2016
阿部修司, 吉川顕正, 花田俊也, 平井隆之, 河本聡美
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R010‐15 (WEB ONLY)   2016
安宅祐香, 石坂圭吾, 阿部琢美, 田中真, 熊本篤志, 吉川顕正, 松下拓輝
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R005‐P44 (WEB ONLY)   2016
寺田綱一朗, 寺田直樹, 笠羽康正, 北元, 垰千尋, 中溝葵, 吉川顕正, OHTANI Shinichi, 土屋史紀, 鍵谷将人, 坂野井健, 村上豪, 吉岡和夫, 木村智樹, 山崎敦, 吉川一朗
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R009‐P24 (WEB ONLY)   2016
西谷望, 堀智昭, 片岡龍峰, 海老原祐輔, 塩川和夫, 大塚雄一, 鈴木秀彦, 吉川顕正
地球電磁気・地球惑星圏学会総会及び講演会(Web)   140th ROMBUNNO.R006‐13 (WEB ONLY)   2016
花田 俊也, 吉川 顕正, 山岡 均
宇宙科学技術連合講演会講演集   59    Oct 2015
Uzziel Perez, Angeleene S. Ang, Quirino M. Sugon Jr., Daniel J. McNamara, Akimasa Yoshikawa
   Jul 2015
We studied the orbit of an electron revolving around an infinitely massive
nucleus of a large classical Hydrogen atom subject to an AC electric field
oscillating perpendicular to the electron's circular orbit. Using perturbation
theory in geometri...
花田俊也, 吉川顕正, 山岡均, 北澤幸人, 柳沢俊史, 松本晴久
宇宙航空研究開発機構特別資料 JAXA-SP-   (14-012) 71-73   Mar 2015
小串修, 河野英昭, 東尾奈々, 松本晴久, BAISHEV D. G., 魚住禎司, 阿部修司, 湯元清文, 吉川顕正
宇宙航空研究開発機構特別資料 JAXA-SP-   (14-012) 205-210   Mar 2015
山岡均, 花田俊也, 吉川顕正, 北澤幸人, 柳沢俊史
日本天文学会年会講演予稿集   2015 250   Feb 2015
IMAJO Shun, YOSHIKAWA Akimasa, UOZUMI Teiji, OHTANI Shinichi, NAKAMIZO Aoi
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.R006‐24   2015
NAKAMIZO Aoi, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.R006‐29   2015
YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.S001‐10   2015
YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.R006‐30   2015
AKIMOTO Kaisei, FUJIMOTO Akiko, YOSHIKAWA Akimasa, UOZUMI Teiji, ABE Shuji
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.R010‐P05   2015
FUJIMOTO Akiko, UOZUMI Teiji, ABE Shuji, IMAJO Shun, MATSUSHITA Hiroki, YOSHIKAWA Akimasa
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.R010‐P11   2015
ABE Shuji, UOZUMI Teiji, MATSUSHITA Hiroki, FUJIMOTO Akiko, KAWANO Hideaki, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.MGI37‐03 (WEB ONLY)   2015
KAWANO Hideaki, YAMADA Tetsuro, KITAGAWA Yuichiro, SHEVTSOV Boris, KHOMUTOV Sergey, PODDELSKIY Igor, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PEM28‐17 (WEB ONLY)   2015
AKIMOTO Kaisei, FUJIMOTO Akiko, YOSHIKAWA Akimasa, UOZUMI Teiji, ABE Shuji
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PEM07‐P05 (WEB ONLY)   2015
GOPALSWAMY Nat, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PPS04‐05 (WEB ONLY)   2015
SASAKI Sho, YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PPS04‐P06 (WEB ONLY)   2015
MATSUSHITA Hiroki, YOSHIKAWA Akimasa, UOZUMI Teiji
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PEM09‐P08 (WEB ONLY)   2015
YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PEM10‐16 (WEB ONLY)   2015
MOISEEV Aleksei, BAISHEV Dmitry, MULLAYAROV Victor, SAMSONOV Sergey, MISHIN Vladimir, UOZUMI Teiji, YOSHIKAWA Akimasa, KOGA Kiyokazu, MATSUMOTO Haruhisa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PEM09‐16 (WEB ONLY)   2015
YOSHIKAWA Akimasa
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PPS04‐P03 (WEB ONLY)   2015
IMAJO Shun, YOSHIKAWA Akimasa, UOZUMI Teiji, OHTANI Shinichi, NAKAMIZO Aoi, CHI Peter
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PEM09‐12 (WEB ONLY)   2015
CHI Peter, YOSHIKAWA Akimasa, MANN Ian
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.PPS04‐06 (WEB ONLY)   2015
花出俊也, 吉川顕正, 山岡均, 野口高明, 北澤幸人, 柳沢俊史, 松本晴久
宇宙科学技術連合講演会講演集(CD-ROM)   59th ROMBUNNO.2L05   2015
阿部琢美, 石坂圭吾, 熊本篤志, 高橋隆男, 田中真, 吉川顕正
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   138th ROMBUNNO.R005‐04   2015
羽田亨, 吉川顕正
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.U06‐15 (WEB ONLY)   2015
清水千春, 佐藤光輝, 高橋幸弘, 土屋史紀, 本間規泰, 本郷保二, 阿部修司, 吉川顕正
日本地球惑星科学連合大会予稿集(Web)   2015 ROMBUNNO.MIS29‐07 (WEB ONLY)   2015
小杉昂史, 中田裕之, 鷹野敏明, 中溝葵, 吉川顕正, 田中高史
大気電気学会誌   8(1) 160-161   Apr 2014
竹内勇人, 河野英昭, 東尾奈々, 松本晴久, BAISHEV D. G., 魚住禎司, 阿部修司, 湯元清文, 吉川顕正
宇宙航空研究開発機構特別資料 JAXA-SP-   (13-016) 33-40   Mar 2014
池田昭大, 湯元清文, 篠原学, 吉川顕正, 野崎憲朗
鹿児島工業高等専門学校研究報告   (48) 77-80   Feb 2014
AKIMOTO Kaisei, YOSHIKAWA Akimasa, UOZUMI Teiji, ABE Shuji
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   136th ROMBUNNO.R010‐P004   2014
YOSHIKAWA Akimasa, UOZUMI Teiji, NAKAMIZO Aoi, OHTANI Shinichi, FUJII Ryoichi
地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)   136th ROMBUNNO.R006‐14   2014

Research Grants & Projects

 
Magnetosphere-Ionosphere Coupling
Nonlinear acceleration and thermalization of plasma particles by the MHD turbulence