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K. Yumoto · SciRah

Researcher profile · Semantic Scholar

K. Yumoto

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K. Yumoto — researcher profile on SciRah

h-index: 44
Works: 360
Citations: 7,996

Most-cited papers

Stratospheric warmings and the geomagnetic lunar tide: 1958–2007
Y. Yamazaki, A. Richmond, K. Yumoto
2012104 citations Open access
Semantic Scholar
Separation of stationary and non-stationary sources with a generalized eigenvalue problem
Satoshi Hara, Y. Kawahara, T. Washio, Paul von Bünau +2 more
2012Neural Networks68 citations
Semantic Scholar
Equatorial electrodynamics and neutral background in the Asian sector during the 2009 stratospheric sudden warming
Hui-Xin Liu, M. Yamamoto, S. T. Ram, T. Tsugawa +5 more
201164 citations Open access
Semantic Scholar
Reexamination of the Sq‐EEJ relationship based on extended magnetometer networks in the east Asian region
Y. Yamazaki, K. Yumoto, T. Uozumi, S. Abe +5 more
201036 citations
Semantic Scholar
Direct magnetic signals from earthquake rupturing: Iwate-Miyagi earthquake of M 7.2, Japan
K. Okubo, N. Takeuchi, M. Utsugi, K. Yumoto +1 more
201135 citations
Semantic Scholar
Relationship between the equatorial electrojet and global Sq currents at the dip equator region
N. S. A. Hamid, Hui-Xin Liu, T. Uozumi, K. Yumoto +3 more
2014Earth, Planets and Space34 citations Open access
Semantic Scholar
Dependence of the amplitude of Pc5‐band magnetic field variations on the solar wind and solar activity
Kazue Takahashi, K. Yumoto, S. Claudepierre, E. Sanchez +2 more
201228 citations Open access
Semantic Scholar
Ground and satellite observations of low‐latitude red auroras at the initial phase of magnetic storms
K. Shiokawa, Y. Miyoshi, P. Brandt, D. S. Evans +3 more
201325 citations
Semantic Scholar
F2 layer characteristics and electrojet strength over an equatorial station
B. O. Adebesin, J. Adeniyi, I. Adimula, B. Reinisch +1 more
201325 citations
Semantic Scholar
Sq current system during stratospheric sudden warming events in 2006 and 2009
Y. Yamazaki, A. Richmond, Hui-Xin Liu, K. Yumoto +1 more
201225 citations Open access
Semantic Scholar
Anomalous ULF Emissions and Their Possible Association with the Strong Earthquakes in Sumatra, Indonesia, during 2007-2012
S. Ahadi, N. Puspito, Gunawan Ibrahim, S. Saroso +2 more
201523 citations Open access
Semantic Scholar
A Wavelet Spectral Analysis Technique for Automatic Detection of Geomagnetic Sudden Commencements
A. G. Hafez, E. Ghamry, H. Yayama, K. Yumoto
2012IEEE Transactions on Geoscience and Remote Sensing21 citations
Semantic Scholar
Magnetic local time and latitude dependence of amplitude of the main impulse (MI) of geomagnetic sudden commencements and its seasonal variation
A. Shinbori, Yuji Tsuji, T. Kikuchi, T. Araki +6 more
201220 citations
Semantic Scholar
Anomalous Geomagnetic Variations Possibly Linked with the Taiwan Earthquake (Mw=6.4) on 19 December 2009
E. Takla, K. Yumoto, J.-Y. Liu, Y. Kakinami +3 more
201120 citations Open access
Semantic Scholar
Hemispheric Daytime Ionospheric Response to Intense Solar Wind Forcing
A. Mannucci, B. Tsurutani, B. Iijima, A. Komjáthy +11 more
201319 citations
Semantic Scholar
Equatorial electrojet dependence on solar activity in the Southeast Asia sector
N. S. A. Hamid, Hui-Xin Liu, T. Uozumi, K. Yumoto
201319 citations
Semantic Scholar
Possible association between anomalous geomagnetic variations and the Molise Earthquakes at Central Italy during 2002
E. Takla, K. Yumoto, P. Sutcliffe, V. Nikiforov +1 more
201118 citations
Semantic Scholar
Possible correlation between solar activity and global seismicity
Jusoh Mohamad Huzaimy, K. Yumoto
2011IEEE International Conference on Space Science and Communication18 citations
Semantic Scholar
Characteristics of equatorial electrojet over India determined from a thick current shell model
A. Rabiu, C. Onwumechili, N. Nagarajan, K. Yumoto
201316 citations
Semantic Scholar
Geomagnetic variations possibly associated with the Pisco earthquake on 15 August 2007, Peru
E. Takla, K. Yumoto, J. Ishitsuka, D. Rosales +3 more
201216 citations
Semantic Scholar
Long-term behavior of annual and semi-annual Sq variations
Y. Yamazaki, K. Yumoto
2012Earth, Planets and Space15 citations Open access
Semantic Scholar
Annual and semi-annual Sq variations at 96° MM MAGDAS I and II stations in Africa
R. El-Hawary, K. Yumoto, Y. Yamazaki, A. Mahrous +15 more
2012Earth, Planets and Space15 citations Open access
Semantic Scholar
Systematic examination of the geomagnetic storm sudden commencement using multi resolution analysis
A. G. Hafez, E. Ghamry, H. Yayama, K. Yumoto
201314 citations
Semantic Scholar
Quantifying the EEJ current with ground-based ionosonde inferred vertical E × B drifts in the morning hours over Ilorin, West Africa
J. Adeniyi, I. Adimula, B. O. Adebesin, B. Reinisch +3 more
2014Acta Geophysica13 citations
Semantic Scholar
Climatology of the inter-hemispheric field-aligned currents system over the Nigeria ionosphere
O. Bolaji, A. Rabiu, E. Oyeyemi, K. Yumoto
201213 citations
Semantic Scholar
Ionosphere over Africa: Results from Geomagnetic Field Measurements During International Heliophysical Year IHY
A. Rabiu, K. Yumoto, E. Falayi, O. R. Bello +1 more
201113 citations
Semantic Scholar
Pi2 pulsations observed around the dawn terminator
S. Imajo, Akimasa Yoshikawa, T. Uozumi, S. Ohtani +7 more
201512 citations Open access
Semantic Scholar
Effect of SC on frequency content of geomagnetic data using DWT application: SC automatic detection
E. Ghamry, A. G. Hafez, K. Yumoto, H. Yayama
2013Earth, Planets and Space11 citations Open access
Semantic Scholar
Anomalous occurrence features of the preliminary impulse of geomagnetic sudden commencement in the South Atlantic Anomaly region
A. Shinbori, Yukitoshi Nishimura, Yuji Tsuji, T. Kikuchi +12 more
201011 citations Open access
Semantic Scholar
Nighttime Pc3 pulsations: MM100 and MAGDAS observations
N. Yagova, Balazs Heilig, V. Pilipenko, A. Yoshikawa +3 more
2017Earth, Planets and Space10 citations Open access
Semantic Scholar
Phase relation between Pi2-associated ionospheric Doppler velocity and magnetic pulsations observed at a midlatitude MAGDAS station
A. Ikeda, K. Yumoto, T. Uozumi, M. Shinohara +4 more
201010 citations Open access
Semantic Scholar
Un-decimated discrete wavelet transform based algorithm for extraction of geomagnetic storm sudden commencement onset of high resolution records
A. G. Hafez, E. Ghamry, H. Yayama, K. Yumoto
2013Computational Geosciences9 citations
Semantic Scholar
Optical observations of large-scale undulations in the 23rd cycle of solar activity
D. Baishev, E. Barkova, K. Yumoto
2012Geomagnetism and Aeronomy9 citations
Semantic Scholar
Use of single‐component wind speed in Rankine‐Hugoniot analysis of interplanetary shocks
Vasiliy S. Vorotnikov, Charles W. Smith, C. Farrugia, C. Meredith +6 more
20119 citations Open access
Semantic Scholar
Mean solar quiet daily variations in the earth’s magnetic field along East African longitudes
O. R. Bello, A. Rabiu, K. Yumoto, E. Yizengaw
20148 citations
Semantic Scholar
The importance of non-uniform geoelectric fields in calculating GIC distributions
E. J. Burstinghaus, T. Saha, R. A. Marshall, K. Yumoto +1 more
2013IEEE Power & Energy Society General Meeting8 citations
Semantic Scholar
Substorm and pseudo-substorm Pi2 pulsations observed during the interval of quasi-periodic magnetotail flow bursts: A case study
Khan-Huk Kim, Kazue Takahashi, S. Ohtani, K. Yumoto +4 more
20107 citations Open access
Semantic Scholar
Determination of the crust-mantle electrical conductivity-depth structure of Niger Delta using solar quiet day (Sq) current
D. Obiora, F. Okeke, K. Yumoto
20136 citations
Semantic Scholar
Signatures of the low-latitude Pi 2 pulsations in Egypt
E. Ghamry, A. Mahrous, A. Fathy, N. Salama +1 more
20126 citations Open access
Semantic Scholar
Mantle electrical conductivity profile of Niger delta region
D. Obiora, F. Okeke, K. Yumoto, S. O. Agha
2014Proceedings of the Indian Academy of Sciences, Earth and Planetary Sciences5 citations Open access
Semantic Scholar
Analysis of propagation delays of compressional Pi 2 waves between geosynchronous altitude and low latitudes
S. Imajo, K. Yumoto, T. Uozumi, H. Kawano +10 more
2014Earth, Planets and Space5 citations Open access
Semantic Scholar
Data and Information Activities of ICSWSE, Kyushu University, Japan
S. Abe, K. Yumoto, A. Ikeda, T. Uozumi +1 more
2013Data Science Journal5 citations Open access
Semantic Scholar
Onset time determination of precursory events in time series data by an extension of Singular Spectrum Transformation
T. Tokunaga, Daisuke Ikeda, Kazuyuki Nakamura, T. Higuchi +5 more
20115 citations
Semantic Scholar
First MAGDAS installation at Fayum in Egypt
A. Mahrous, E. Ghamry, R. El-Hawary, I. Fathy +4 more
20105 citations
Semantic Scholar
Electrical conductivity of mantle in the North Central region of Nigeria
D. Obiora, F. Okeke, K. Yumoto
20154 citations
Semantic Scholar
Electromagnetic coupling on solar-terrestrial system: Possible effects on seismic activities
M. H. Jusoh, K. Yumoto, N. S. Abdul Hamid, Hui-Xin Liu
2012International Symposium on Antennas and Propagation4 citations
Semantic Scholar
Pi 2 waves simultaneously observed by Cluster and CPMN ground-based magnetometers near the plasmapause
H. Kawano, S. Ohtani, T. Uozumi, T. Tokunaga +4 more
20114 citations Open access
Semantic Scholar
Mapping the earth conductivity-depth structure of African geomagnetic equatorial anomaly regions using solar quiet current variations
D. Ugbor, F. Okeke, K. Yumoto
20163 citations
Semantic Scholar
Global Cavity Mode-Like and Localized Field-Line Pc 3-4 Oscillations Stimulated by Interplanetary Impulses (Si/Sc): Initial Results From the 210° MM Magnetic Observations
K. Yumoto, A. Isono, K. Shiokawa, H. Matsuoka +3 more
20133 citations
Semantic Scholar
Brief study of equatorial electrojet and global Sq currents at Southeast Asia region
N. S. Abdul Hamid, T. Uozumi, Hui-Xin Liu, K. Yumoto
2013IEEE International Conference on Space Science and Communication3 citations
Semantic Scholar

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H. Yayama — researcher profile on SciRah

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A. Rabiu — researcher profile on SciRah

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A. Mahrous — researcher profile on SciRah