Papers - OTSUKA, Yuichi
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Y Otsuka, K Shiokawa, T Ogawa, T Yokoyama, M Yamamoto, S Fukao
GEOPHYSICAL RESEARCH LETTERS Vol. 31 ( 20 ) 2004.10
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Statistical characteristics of gravity waves observed by an all-sky imager at Darwin, Australia Reviewed Open Access
Shin Suzuki, K. Shiokawa, Y. Otsuka, T. Ogawa, P. Wilkinson
Journal of Geophysical Research D: Atmospheres Vol. 109 ( D20 ) page: D20 - S07 2004.8
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Y Otsuka, K Shiokawa, T Ogawa, P Wilkinson
GEOPHYSICAL RESEARCH LETTERS Vol. 31 ( 15 ) 2004.8
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K Shiokawa, Y Otsuka, T Ogawa, H Takahashi, T Nakamura, T Shimomai
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS Vol. 66 ( 11 ) page: 891 - 897 2004.7
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A statistical study of large-scale traveling ionospheric disturbances using the GPS network in Japan Reviewed Open Access
Tsugawa, T, Saito, A, Otsuka, Y
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 109 ( A6 ) page: A06302 2004.6
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Simultaneous mesosphere/lower thermosphere and thermospheric F region observations during geomagnetic storms Reviewed
Balan, N, Kawamura, S, Nakamura, T, Yamamoto, M, Fukao, S, Igarashi, K, Maruyama, T, Shiokawa, K, Otsuka, Y, Ogawa, T, Alleyne, H, Watanabe, S, Murayama, Y
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 109 ( A4 ) 2004.4
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*Geomagnetic conjugate observations of medium-scale traveling ionospheric disturbances at midlatitude using all-sky airglow imagers Reviewed
Otsuka, Y., K. Shiokawa, T. Ogawa, and P. Wilkinson
Geophys. Res. Lett. Vol. 31 ( L15803 ) page: doi:10.1029/2004GL020262 2004
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Spatial relationship of equatorial plasma bubbles and field-aligned irregularities observed with an all-sky airglow imager and the Equatorial Atmosphere Radar Reviewed
Otsuka, Y., K. Shiokawa, T. Ogawa, T. Yokoyama, M. Yamamoto, and S. Fukao
Geophys. Res. Lett. Vol. 31 ( L20802 ) page: 10.1029/2004GL020869 2004
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Generation of large-scale equatorial F-region plasma depletions during low range spread-F season Reviewed Open Access
Y Sahai, PR Fagundes, Abalde, JR, AA Pimenta, JA Bittencourt, Y Otsuka, VH Rios
ANNALES GEOPHYSICAE Vol. 22 ( 1 ) page: 15 - 23 2004
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Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points Reviewed Open Access
K Shiokawa, Y Otsuka, T Ogawa, P Wilkinson
ANNALES GEOPHYSICAE Vol. 22 ( 9 ) page: 3137 - 3143 2004
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Ray-tracing Calculation of VHF Radio Waves Scattered by Field-aligned Irregularities Associated with Equatorial Plasma Bubbles Reviewed
Hiroyuki Nakata, Yoshiaki Akaike, Yuichi Otsuka, Toshiaki Takano, Satoshi Ujigawa, Ikuo Nagashima
IEEJ Transactions on Fundamentals and Materials Vol. 124 ( 12 ) page: 1253 - 1254 2004
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Thermospheric wind during a storm-time large-scale traveling ionospheric disturbance Reviewed Open Access
K Shiokawa, Y Otsuka, T Ogawa, S Kawamura, M Yamamoto, S Fukao, T Nakamura, T Tsuda, N Balan, K Igarashi, G Lu, A Saito, K Yumoto
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 108 ( A12 ) 2003.12
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Optical and radio measurements of a 630-nm airglow enhancement over Japan on 9 September 1999 Reviewed
Y Otsuka, T Kadota, K Shiokawa, T Ogawa, S Kawamura, S Fukao, Zhang, SR
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 108 ( A6 ) 2003.6
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K Shiokawa, Y Otsuka, C Ihara, T Ogawa, FJ Rich
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 108 ( A4 ) 2003.4
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Damping of large-scale traveling ionospheric disturbances detected with GPS networks during the geomagnetic storm Reviewed Open Access
T Tsugawa, A Saito, Y Otsuka, M Yamamoto
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 108 ( A3 ) 2003.3
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Statistical study of nighttime medium-scale traveling ionospheric disturbances using midlatitude airglow images Reviewed Open Access
K Shiokawa, C Ihara, Y Otsuka, T Ogawa
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 108 ( A1 ) 2003.1
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Optical and radio measurements of a 630-nm enhancement over Japan on September 9, 1999 Reviewed
Otsuka, Y., T. Kadota, K. Shiokawa, T. Ogawa, S. Kawamura,, S. Fukao, and S. -R. Zhang
J. Geophys. Res. Vol. 108(A6) ( 1252 ) page: doi:10.1029/2002JA009594 2003
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A two-channel Fabry-Perot interferometer with thermoelectric-cooled CCD detectors for neutral wind measurement in the upper atmosphere Reviewed Open Access
K Shiokawa, T Kadota, Y Otsuka, T Ogawa, T Nakamura, S Fukao
EARTH PLANETS AND SPACE Vol. 55 ( 5 ) page: 271 - 275 2003
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Simultaneous middle and upper atmosphere radar and ionospheric sounder observations of midlatitude E region irregularities and sporadic E layer Reviewed
T Ogawa, O Takahashi, Y Otsuka, K Nozaki, M Yamamoto, K Kita
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 107 ( A10 ) 2002.10
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Annual and semiannual variations of the midlatitude ionosphere under low solar activity Reviewed
S Kawamura, N Balan, Y Otsuka, S Fukao
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 107 ( A8 ) 2002.8