• 1046 引用
  • 17 h指数
19962020

Research output per year

Pureに変更を加えた場合、すぐここに表示されます。

研究成果

フィルター
記事
2015

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., 5 1 2015, : : Journal of Geophysical Research: Space Physics. 120, 5, p. 3883-3898 16 p.

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

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., 10 30 2015, : : Arabian Journal of Geosciences. 8, 10, p. 8497-8503 7 p.

研究成果: ジャーナルへの寄稿記事

2014

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., 1 1 2014, : : Journal of Geophysical Research: Space Physics. 119, 9, p. 7716-7731 16 p.

研究成果: ジャーナルへの寄稿記事

15 引用 (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., 1 1 2014, : : earth, planets and space. 66, 1, 20.

研究成果: ジャーナルへの寄稿記事

公開
2 引用 (Scopus)

Approximate forms of daytime ionospheric conductance

Ieda, A., Oyama, S., Vanhamäki, H., Fujii, R., Nakamizo, A., Amm, O., Hori, T., Takeda, M., Ueno, G., Yoshikawa, A., Redmon, R. J., Denig, W. F., Kamide, Y. & Nishitani, N., 12 2014, : : Journal of Geophysical Research: Space Physics. 119, 12, p. 10,397-10,415

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

Data processing method to classify Pc5 ULF pulsations due to solar wind perturbations at equatorial region

Ahmad, S. N. A., Jusoh, M. H., Shariff, K. K. M., Abdullah, M., Asillam, M. F., Veenadhari, B., Uozumi, T., Abe, S., Yoshikawa, A. & Cardinal, M. G., 2014, : : WSEAS Transactions on Signal Processing. 10, 1, p. 337-344 8 p.

研究成果: ジャーナルへの寄稿記事

Flapping current sheet with superposed waves seen in space and on the ground

Wang, G. Q., Volwerk, M., Nakamura, R., Boakes, P., Zhang, T. L., Yoshikawa, A. & Baishev, D. G., 12 2014, : : Journal of Geophysical Research: Space Physics. 119, 12, p. 10,078-10,091

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

Ground magnetic effects of the equatorial electrojet simulated by the TIE-GCM driven by TIMED satellite data

Yamazaki, Y., Richmond, A. D., Maute, A., Wu, Q., Ortland, D. A., Yoshikawa, A., Adimula, I. A., Rabiu, B., Kunitake, M. & Tsugawa, T., 1 1 2014, : : Journal of Geophysical Research: Space Physics. 119, 4, p. 3150-3161 12 p.

研究成果: ジャーナルへの寄稿記事

14 引用 (Scopus)

Pc5 magnetic pulsations during the outer electron radiation belt

Musafar, L. M. K., Triyanta, Sugitomo, W., Djamaluddin, T., Yoshikawa, A. & Uozumi, T., 1 1 2014, : : International Journal of Technology. 5, 3, p. 269-276 8 p.

研究成果: ジャーナルへの寄稿記事

Pi2 pulsation simultaneously observed in the e and F region ionosphere with the SuperDARN Hokkaido radar

Teramoto, M., Nishitani, N., Pilipenko, V., Ogawa, T., Shiokawa, K., Nagatsuma, T., Yoshikawa, A., Baishev, D. & Murata, K. T., 5 2014, : : Journal of Geophysical Research: Space Physics. 119, 5, p. 3444-3462 19 p.

研究成果: ジャーナルへの寄稿記事

7 引用 (Scopus)
2013

Coupling of electrons and inertial Alfven waves in the topside ionosphere

Shi, R., Liu, H., Yoshikawa, A., Zhang, B. & Ni, B., 1 1 2013, : : Journal of Geophysical Research: Space Physics. 118, 6, p. 2903-2910 8 p.

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

General solution for calculating polarization electric fields in the auroral ionosphere and application examples

Amm, O., Fujii, R., Vanhamaki, H. A., Yoshikawa, A. & Ieda, A., 1 1 2013, : : Journal of Geophysical Research: Space Physics. 118, 5, p. 2428-2437 10 p.

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

Illustration of Cowling channel coupling to the shear Alfven wave

Yoshikawa, A., Amm, O., Vanhamäki, H. & Fujii, R., 10 2013, : : Journal of Geophysical Research: Space Physics. 118, 10, p. 6405-6415 11 p.

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

Theory of Cowling channel formation by reflection of shear Alfven waves from the auroral ionosphere

Yoshikawa, A., Amm, O., Vanhamäki, H., Nakamizo, A. & Fujii, R., 10 2013, : : Journal of Geophysical Research: Space Physics. 118, 10, p. 6416-6425 10 p.

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

The response of the dayside equatorial electrojet to step-like changes of IMF BZ

Ohtani, S., Uozumi, T., Kawano, H., Yoshikawa, A., Utada, H., Nagatsuma, T. & Yumoto, K., 1 1 2013, : : Journal of Geophysical Research: Space Physics. 118, 6, p. 3637-3646 10 p.

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)
2012

An application of the finite length Cowling channel model to auroral arcs with longitudinal variations

Fujii, R., Amm, O., Vanhamaki, H. A., Yoshikawa, A. & Ieda, A., 12 7 2012, : : Journal of Geophysical Research: Space Physics. 117, 11, A11217.

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

Ionospheric Joule heating and Poynting flux in quasi-static approximation

Vanhamaki, H. A., Yoshikawa, A., Amm, O. & Fujii, R., 1 1 2012, : : Journal of Geophysical Research: Space Physics. 117, 8, A08327.

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

Poleward moving auroral arcs observed at the South Pole Station and the interpretation by field line resonances

Tanaka, Y. M., Ebihara, Y., Saita, S., Yoshikawa, A., Obana, Y. & Weatherwax, A. T., 1 1 2012, : : Journal of Geophysical Research: Space Physics. 117, 9, A09305.

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)
2011

AKR modulation and global Pi2 oscillation

Uozumi, T., Yumoto, K., Tokunaga, T., Solovyev, S. I., Shevtsov, B. M., Marshall, R., Liou, K., Ohtani, S., Abe, S., Ikeda, A., Kitamura, K., Yoshikawa, A., Kawano, H. & Itonaga, M., 1 1 2011, : : Journal of Geophysical Research: Space Physics. 116, 6, A06214.

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

An empirical model of the quiet daily geomagnetic field variation

Yamazaki, Y., Yumoto, K., Cardinal, M. G., Fraser, B. J., Hattori, P., Kakinami, Y., Liu, J. Y., Lynn, K. J. W., Marshall, R., McNamara, D., Nagatsuma, T., Nikiforov, V. M., Otadoy, R. E., Ruhimat, M., Shevtsov, B. M., Shiokawa, K., Abe, S., Uozumi, T. & Yoshikawa, A., 1 1 2011, : : Journal of Geophysical Research: Space Physics. 116, 10, A10312.

研究成果: ジャーナルへの寄稿記事

40 引用 (Scopus)
10 引用 (Scopus)

A statistical investigation of the Cowling channel efficiency in the auroral zone

Amm, O., Fujii, R., Kauristie, K., Aikio, A., Yoshikawa, A., Ieda, A. & Vanhamaki, H. A., 1 1 2011, : : Journal of Geophysical Research: Space Physics. 116, 2, A02304.

研究成果: ジャーナルへの寄稿記事

19 引用 (Scopus)

Onset time determination of precursory events in time series data by an extension of Singular Spectrum Transformation

Tokunaga, T., Ikeda, D., Nakamura, K., Higuchi, T., Yoshikawa, A., Uozumi, T., Fujimoto, A., Morioka, A. & Yumoto, K., 10 17 2011, : : International Journal of Circuits, Systems and Signal Processing. 5, 1, p. 46-60 15 p.

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

Pi 2 waves simultaneously observed by Cluster and CPMN ground-based magnetometers near the plasmapause

Kawano, H., Ohtani, S., Uozumi, T., Tokunaga, T., Yoshikawa, A., Yumoto, K., Lucek, E. A. & André, M., 10 6 2011, : : Annales Geophysicae. 29, 9, p. 1663-1672 10 p.

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

Reformulation and energy flow of the Cowling channel

Fujii, R., Amm, O., Yoshikawa, A., Ieda, A. & Vanhamäki, H., 1 1 2011, : : Journal of Geophysical Research: Space Physics. 116, 2, A02305.

研究成果: ジャーナルへの寄稿記事

28 引用 (Scopus)

Self-consistent formulation for the evolution of ionospheric conductances at the ionospheric e region within the M-I coupling scheme

Yoshikawa, A., Nakamizo, A., Amm, O., Vanhamaki, H. A., Fujii, R., Tanaka, Y. M., Uozumi, T., Yumoto, K. & Ohtani, S., 1 1 2011, : : Journal of Geophysical Research: Space Physics. 116, 9, A09223.

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)
2010

Magnetic field investigation of Mercury's magnetosphere and the inner heliosphere by MMO/MGF

Baumjohann, W., Matsuoka, A., Magnes, W., Glassmeier, K. H., Nakamura, R., Biernat, H., Delva, M., Schwingenschuh, K., Zhang, T., Auster, H. U., Fornacon, K. H., Richter, I., Balogh, A., Cargill, P., Carr, C., Dougherty, M., Horbury, T. S., Lucek, E. A., Tohyama, F., Takahashi, T. および15人, Tanaka, M., Nagai, T., Tsunakawa, H., Matsushima, M., Kawano, H., Yoshikawa, A., Shibuya, H., Nakagawa, T., Hoshino, M., Tanaka, Y., Kataoka, R., Anderson, B. J., Russell, C. T., Motschmann, U. & Shinohara, M., 1 1 2010, : : Planetary and Space Science. 58, 1-2, p. 279-286 8 p.

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

Substorm convection and current system deduced from the global simulation

Tanaka, T., Nakamizo, A., Yoshikawa, A., Fujita, S., Shinagawa, H., Shimazu, H., Kikuchi, T. & Hashimoto, K. K., 1 1 2010, : : Journal of Geophysical Research: Space Physics. 115, A5, A05220.

研究成果: ジャーナルへの寄稿記事

公開
56 引用 (Scopus)
2009

Characteristics of counter-Sq SFE (SFE) at the dip equator CPMN stations A05306

Yamazaki, Y., Yumoto, K., Yoshikawa, A., Watari, S. & Utada, H., 5 1 2009, : : Journal of Geophysical Research: Space Physics. 114, 5, A05306.

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

Equivalent current systems for the annual and semiannual Sq variations observed along the 210°MM CPMN stations

Yamazaki, Y., Yumoto, K., Uozumi, T., Yoshikawa, A. & Cardinal, M. G., 1 1 2009, : : Journal of Geophysical Research: Space Physics. 114, 12, A12320.

研究成果: ジャーナルへの寄稿記事

14 引用 (Scopus)

Propagation characteristics of Pi 2 pulsations observed at high- And low-latitude MAGDAS/CPMN stations: A statistical study

Uozumi, T., Abe, S., Kitamura, K., Tokunaga, T., Yoshikawa, A., Kawano, H., Marshall, R., Morris, R. J., Shevtsov, B. M., Solovyev, S. I., McNamara, D. J., Liou, K., Ohtani, S., Itonaga, M. & Yumoto, K., 11 2009, : : Journal of Geophysical Research: Space Physics. 114, 11, A11207.

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)
2008

A new index to monitor temporal and long-term variations of the equatorial electrojet by MAGDAS/CPMN real-time data: EE-index

Uozumi, T., Yumoto, K., Kitamura, K., Abe, S., Kakinami, Y., Shinohara, M., Yoshikawa, A., Kawano, H., Ueno, T., Tokunaga, T., McNamara, D., Ishituka, J. K., Dutra, S. L. G., Damtie, B., Doumbia, V., Obrou, O., Rabiu, A. B., Adimula, I. A., Othman, M., Fairos, M. および1人, Otadoy, R. E. S., 1 1 2008, : : earth, planets and space. 60, 7, p. 785-790 6 p.

研究成果: ジャーナルへの寄稿記事

18 引用 (Scopus)

Towards understanding the electrodynamics of the 3-dimensional high-latitude ionosphere: Present and future

Amm, O., Aruliah, A., Buchert, S. C., Fujii, R., Gjerloev, J. W., Ieda, A., Matsuo, T., Stolle, C., Vanhamäki, H. & Yoshikawa, A., 11 24 2008, : : Annales Geophysicae. 26, 12, p. 3913-3932 20 p.

研究成果: ジャーナルへの寄稿記事

19 引用 (Scopus)
2007

Global features of Pi 2 pulsations obtained by independent component analysis

Tokunaga, T., Kohta, H., Yoshikawa, A., Uozumi, T. & Yumoto, K., 7 28 2007, : : Geophysical Research Letters. 34, 14, L14106.

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

Horizontal amplitude and phase structure of low-latitude Pc 3 pulsations around the dawn terminator A11308

Tanaka, Y. M., Yumoto, K., Yoshikawa, A., Itonaga, M., Shinohara, M., Takasaki, S. & Fraser, B. J., 11 1 2007, : : Journal of Geophysical Research: Space Physics. 112, 11, A11308.

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

Pi 2 source region in the magnetosphere deduced from CPMN data

Uozumi, T., Kawano, H., Yoshikawa, A., Itonaga, M. & Yumoto, K., 4 1 2007, : : Planetary and Space Science. 55, 6, p. 849-857 9 p.

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)
2006

A significant mass density increase during a large magnetic storm in October 2003 obtained by ground-based ULF observations at L~1.4

Takasaki, S., Kawano, H., Tanaka, Y., Yoshikawa, A., Seto, M., Iizima, M., Obana, Y., Sato, N., Yumoto, K. & Yumoto, K., 1 1 2006, : : earth, planets and space. 58, 5, p. 617-622 6 p.

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

ERG - A small-satellite mission to investigate the dynamics of the inner magnetosphere

Shiokawa, K., Seki, K., Miyoshi, Y., Ieda, A., Ono, T., Iizima, M., Nagatsuma, T., Obara, T., Takashima, T., Asamura, K., Kasaba, Y., Matsuoka, A., Saito, Y., Saito, H., Hirahara, M., Tonegawa, Y., Toyama, F., Tanaka, M., Nose, M., Kasahara, Y. および7人, Yumoto, K., Kawano, H., Yoshikawa, A., Ebihara, Y., Yukimatsu, A., Sato, N. & Watanabe, S., 1 1 2006, : : Advances in Space Research. 38, 8, p. 1861-1869 9 p.

研究成果: ジャーナルへの寄稿記事

13 引用 (Scopus)
2005

Local time distribution of low and middle latitude ground magnetic disturbances at sawtooth injections of 18-19 April 2002

Kitamura, K., Kawano, H., Ohtani, S. I., Yoshikawa, A. & Yumoto, K., 7 2005, : : Journal of Geophysical Research: Space Physics. 110, A7, A07208.

研究成果: ジャーナルへの寄稿記事

22 引用 (Scopus)

North-south asymmetry of the amplitude of high-latitude Pc 3-5 pulsations: Observations at conjugate stations

Obana, Y., Yoshikawa, A., Olson, J. V., Morris, R. J., Fraser, B. J. & Yumoto, K., 1 1 2005, : : Journal of Geophysical Research: Space Physics. 110, A10, A10214.

研究成果: ジャーナルへの寄稿記事

7 引用 (Scopus)
2004

Longitudinal structure of Pc3 pulsations on the ground near the magnetic equator

Tanaka, Y. M., Yumoto, K., Yoshikawa, A., Shinohara, M., Kawano, H. & Kitamura, T. I., 3 2004, : : Journal of Geophysical Research: Space Physics. 109, A3, p. A03201

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

Propagation characteristics of Pi 2 magnetic pulsations observed at ground high latitudes

Uozumi, T., Yumoto, K., Kawano, H., Yoshikawa, A., Ohtani, S., Olson, J. V., Akasofu, S. I., Solovyev, S. I., Vershinin, E. F., Liou, K. & Meng, C. I., 8 2004, : : Journal of Geophysical Research: Space Physics. 109, A8, A08203.

研究成果: ジャーナルへの寄稿記事

23 引用 (Scopus)
2002

A numerical simulation of the Pi2 pulsations associated with the substorm current wedge

Fujita, S., Nakata, H., Itonaga, M., Yoshikawa, A. & Mizuta, T., 1 1 2002, : : Journal of Geophysical Research: Space Physics. 107, A3, 1034.

研究成果: ジャーナルへの寄稿記事

42 引用 (Scopus)
2 引用 (Scopus)
16 引用 (Scopus)

Hall-induced inductive shielding effect on geomagnetic pulsations

Yoshikawa, A., Obana, Y., Shinohara, M., Itonaga, M. & Yumoto, K., 4 15 2002, : : Geophysical Research Letters. 29, 8, p. 107-1 - 107-4

研究成果: ジャーナルへの寄稿記事

13 引用 (Scopus)

Hall-induced inductive shielding effect on geomagnetic pulsations

Yoshikawa, A., Obana, Y., Shinohara, M., Itonaga, M. & Yumoto, K., 4 15 2002, : : Geophysical Research Letters. 29, 8, p. 107-1-107-4

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)
2001

Propagation property of transient MHD impulses in the magnetosphere - Ionosphere system: The 2D model of the Pi2 pulsation

Fujita, S., Mizuta, T., Itonaga, M., Yoshikawa, A. & Nakata, H., 6 1 2001, : : Geophysical Research Letters. 28, 11, p. 2161-2164 4 p.

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)
2000

A wave equation describing the generation of field-aligned current in the magnetosphere

Itonaga, M., Yoshikawa, A., Fujita, S. & Fujita, S., 8 1 2000, : : earth, planets and space. 52, 7, p. 503-507 5 p.

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)