研究者詳細 - 大塚　雄一

論文 - 大塚　雄一

分割表示 484 件中 181 - 200 件目／全件表示 >>

Implementation of Hybrid Ionospheric TEC Forecasting Algorithm Using PCA-NN Method 査読有り

Mallika, IL, Ratnam, DV, Ostuka, Y, Sivavaraprasad, G, Raman, S

IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 12 巻 ( 1 ) 頁： 371 - 381 2019年1月

Rapid Loss of Relativistic Electrons by EMIC Waves in the Outer Radiation Belt Observed by Arase, Van Allen Probes, and the PWING Ground Stations 査読有り

Kurita, S; Miyoshi, Y; Shiokawa, K; Higashio, N; Mitani, T; Takashima, T; Matsuoka, A; Shinohara, I; Kletzing, CA; Blake, JB; Claudepierre, SG; Connors, M; Oyama, S; Nagatsuma, T; Sakaguchi, K; Baishev, D; Otsuka, Y

GEOPHYSICAL RESEARCH LETTERS 45 巻 ( 23 ) 頁： 12720 - 12729 2018年12月

Microscopic Observations of Pulsating Aurora Associated With Chorus Element Structures: Coordinated Arase Satellite-PWING Observations 査読有り

Ozaki, M; Shiokawa, K; Miyoshi, Y; Hosokawa, K; Oyama, S; Yagitani, S; Kasahara, Y; Kasaba, Y; Matsuda, S; Kataoka, R; Ebihara, Y; Ogawa, Y; Otsuka, Y; Kurita, S; Moore, RC; Tanaka, YM; Nosé, M; Nagatsuma, T; Connors, M; Nishitani, N; Katoh, Y; Hikishima, M; Kumamoto, A; Tsuchiya, F; Kadokura, A; Nishiyama, T; Inoue, T; Imamura, K; Matsuoka, A; Shinohara, I

GEOPHYSICAL RESEARCH LETTERS 45 巻 ( 22 ) 頁： 12125 - 12134 2018年11月

Statistical Analysis of SAR Arc Detachment From the Main Oval Based on 11-Year, AII-sky Imaging Observation at Athabasca, Canada 査読有り

Takagi, Y; Shiokawa, K; Otsuka, Y; Connors, M; Schofield, I

GEOPHYSICAL RESEARCH LETTERS 45 巻 ( 21 ) 頁： 11539 - 11546 2018年11月

Review of the generation mechanisms of post-midnight irregularities in the equatorial and low-latitude ionosphere 査読有り

Otsuka, Y

PROGRESS IN EARTH AND PLANETARY SCIENCE 5 巻 2018年9月

Investigation of Nighttime MSTIDS Observed by Optical Thermosphere Imagers at Low Latitudes: Morphology, Propagation Direction, and Wind Filtering 査読有り

Figueiredo, CAOB; Takahashi, H; Wrasse, CM; Otsuka, Y; Shiokawa, K; Barros, D

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123 巻 ( 9 ) 頁： 7843 - 7857 2018年9月

Storm-Enhanced Development of Postsunset Equatorial Plasma Bubbles Around the Meridian 120 degrees E/60 degrees W on 7-8 September 2017 査読有り

Li Guozhu, Ning Baiqi, Wang Chi, Abdu M. A., Otsuka Yuichi, Yamamoto M., Wu Jian, Chen Jinsong

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123 巻 ( 9 ) 頁： 7985 - 7998 2018年9月

Temporal and Spatial Variations of Storm Time Midlatitude Ionospheric Trough Based on Global GNSS-TEC and Arase Satellite Observations 査読有り

Shinbori, A; Otsuka, Y; Tsugawa, T; Nishioka, M; Kumamoto, A; Tsuchiya, F; Matsuda, S; Kasahara, Y; Matsuoka, A; Ruohoniemi, JM; Shepherd, SG; Nishitani, N

GEOPHYSICAL RESEARCH LETTERS 45 巻 ( 15 ) 頁： 7362 - 7370 2018年8月

On the Role of Thermospheric Winds and Sporadic E Layers in the Formation and Evolution of Electrified MSTIDs in Geomagnetic Conjugate Regions 査読有り

Narayanan V. L., Shiokawa K., Otsuka Y., Neudegg D.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123 巻 ( 8 ) 頁： 6957 - 6980 2018年8月

On the Solstice Maxima and Azimuth-Dependent Characteristics of the 150-km Echoes Observed Using the Equatorial Atmosphere Radar 査読有り

Chaitanya, PP; Patra, AK; Otsuka, Y; Yokoyama, T; Yamamoto, M

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123 巻 ( 8 ) 頁： 6752 - 6759 2018年8月

Statistical Analysis of the Phase Velocity Distribution of Mesospheric and Ionospheric Waves Observed in Airglow Images Over a 16-Year Period: Comparison Between Rikubetsu and Shigaraki, Japan 査読有り

Tsuchiya, S; Shiokawa, K; Fujinami, H; Otsuka, Y; Nakamura, T; Yamamoto, M

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123 巻 ( 8 ) 頁： 6930 - 6947 2018年8月

Quantum criticality in the metal-superconductor transition of interacting Dirac fermions on a triangular lattice 査読有り

Otsuka Yuichi, Seki Kazuhiro, Sorella Sandro, Yunoki Seiji

PHYSICAL REVIEW B 98 巻 ( 3 ) 2018年7月

Equatorial plasma bubble seeding by MSTIDs in the ionosphere 査読有り

Takahashi, H; Wrasse, CM; Figueiredo, CAOB; Barros, D; Abdu, MA; Otsuka, Y; Shiokawa, K

PROGRESS IN EARTH AND PLANETARY SCIENCE 5 巻 ( 1 ) 2018年6月

Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS

Tsugawa Takuya, Nishioka Michi, Ishii Mamoru, Hozumi Kornyanat, Saito Susumu, Shinbori Atsuki, Otsuka Yuichi, Saito Akinori, Buhari Suhaila M., Abdullah Mardina, Supnithi Pornchai

JOURNAL OF DISASTER RESEARCH 13 巻 ( 3 ) 頁： 535-545 2018年6月

Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS 査読有り

Tsugawa Takuya, Nishioka Michi, Ishii Mamoru, Hozumi Kornyanat, Saito Susumu, Shinbori Atsuki, Otsuka Yuichi, Saito Akinori, Buhari Suhaila M, Abdullah Mardina, Supnithi Pornchai

JOURNAL OF DISASTER RESEARCH 13 巻 ( 3 ) 頁： 535 - 545 2018年6月

Relationship between day-to-day variability of equatorial plasma bubble activity from GPS scintillation and atmospheric properties from Ground-to-topside model of Atmosphere and Ionosphere for Aeronomy (GAIA) assimilation 査読有り

Yamamoto, M; Otsuka, Y; Jin, H; Miyoshi, Y

PROGRESS IN EARTH AND PLANETARY SCIENCE 5 巻 2018年5月

Spatial and temporal characteristics of ionospheric total electron content over Indian equatorial and low-latitude GNSS stations 査読有り

G. Sivavaraprasad, Yuichi Otsuka, Nitin Kumar Tripathi, V Rajesh Chowdhary, D Venkata Ratnam, Mohammed Afzal Khan

2018 Conference on Signal Processing And Communication Engineering Systems, SPACES 2018 2018- 巻頁： 105 - 108 2018年3月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Institute of Electrical and Electronics Engineers Inc.

The study and understanding of the intermittent characteristics of equatorial and low latitude ionosphere is crucial for modelling and forecasting the ionosphere and space weather conditions. The performance of space-based navigation systems such as Global Positioning System (GPS) is affected by the sporadic temporal and spatial variations of ionospheric Total Electron Content (TEC). The variability of ionospheric electron density over Indian low latitude sector is difficult to model due to Equatorial Ionization Anomaly (EIA). In this paper, Multi-fractal aspects of the GPS measured TEC is investigated during both high and low solar activity periods of 24th solar cycle. The vertical TEC (VTEC) data sets are obtained from two Indian low latitude stations namely, Bangalore (Geographical Latitude: 13.020 N, Geographical Longitude: 77.57o E), and Lucknow (Geographical Latitude: 26.830 N, Geographical Longitude: 80.92o E) for two year long period 2013 and 2015. The experimental results shows that the respective geographic sites have important scaling differences as well as similarities when their Multi-fractal signatures for VTEC are compared. These differences and similarities are interpreted in terms of the EIA conditions, where this phenomenon is an important source of intermittence due to the presence of the VTEC peaks at ±300 geomagnetic latitudes. During the high solar activity period, the intermittence characteristics of VTEC over EIA region (Lucknow) are relatively more complex than equatorial (Bengaluru) station, whereas during low solar activity period the scenario is reciprocal.

DOI： 10.1109/SPACES.2018.8316326

Web of Science

Scopus

Daily and seasonal variations in the linear growth rate of the Rayleigh-Taylor instability in the ionosphere obtained with GAIA 査読有り

Shinagawa, H; Jin, H; Miyoshi, Y; Fujiwara, H; Yokoyama, T; Otsuka, Y

PROGRESS IN EARTH AND PLANETARY SCIENCE 5 巻 2018年3月

Medium-Scale Traveling Ionospheric Disturbances Observed by Detrended Total Electron Content Maps Over Brazil 査読有り

Figueiredo, CAOB; Takahashi, H; Wrasse, CM; Otsuka, Y; Shiokawa, K; Barros, D

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123 巻 ( 3 ) 頁： 2215 - 2227 2018年3月

Daytime F-region irregularity triggered by rocket-induced ionospheric hole over low latitude 査読有り

Li, GZ; Ning, BQ; Abdu, MA; Wang, C; Otsuka, Y; Wan, WX; Lei, JH; Nishioka, M; Tsugawa, T; Hu, LH; Yang, GT; Yan, CX

PROGRESS IN EARTH AND PLANETARY SCIENCE 5 巻 ( 1 ) 2018年2月

　前のページ - 次のページ　

<大塚 雄一>

論文 - 大塚 雄一

<大塚　雄一>

論文 - 大塚　雄一