研究者詳細 - 堀　智昭

論文 - 堀　智昭

分割表示 126 件中 41 - 60 件目／全件表示 >>

Low-Altitude Ion Upflow Observed by EISCAT and its Effects on Supply of Molecular Ions in the Ring Current Detected by Arase (ERG)

Takada, M; Seki, K; Ogawa, Y; Keika, K; Kasahara, S; Yokota, S; Hori, T; Asamura, K; Miyoshi, Y; Shinohara, I

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126 巻 ( 5 ) 2021年4月

Multi-Event Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner Magnetosphere During Non-Storm-Time Substorms

Inaba, Y; Shiokawa, K; Oyama, S; Otsuka, Y; Connors, M; Schofield, I; Miyoshi, Y; Imajo, S; Shinbori, A; Gololobov, AY; Kazama, Y; Wang, SY; Tam, SWY; Chang, TF; Wang, BJ; Asamura, K; Yokota, S; Kasahara, S; Keika, K; Hori, T; Matsuoka, A; Kasahara, Y; Kumamoto, A; Matsuda, S; Kasaba, Y; Tsuchiya, F; Shoji, M; Kitahara, M; Nakamura, S; Shinohara, I; Spence, HE; Reeves, GD; Macdowall, RJ; Smith, CW; Wygant, JR; Bonnell, JW

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126 巻 ( 4 ) 2021年4月

Data-Driven Simulation of Rapid Flux Enhancement of Energetic Electrons With an Upper-Band Whistler Burst

Saito, S; Kurita, S; Miyoshi, Y; Kasahara, S; Yokota, S; Keika, K; Hori, T; Kasahara, Y; Matsuda, S; Shoji, M; Nakamura, S; Matsuoka, A; Imajo, S; Shinohara, I

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126 巻 ( 4 ) 2021年3月

Investigation of Small-Scale Electron Density Irregularities Observed by the Arase and Van Allen Probes Satellites Inside and Outside the Plasmasphere

Thomas, N; Shiokawa, K; Miyoshi, Y; Kasahara, Y; Shinohara, I; Kumamoto, A; Tsuchiya, F; Matsuoka, A; Kasahara, S; Yokota, S; Keika, K; Hori, T; Asamura, K; Wang, SY; Kazama, Y; Tam, SWY; Chang, TF; Wang, BJ; Wygant, J; Breneman, A; Reeves, G

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126 巻 ( 3 ) 2021年3月

Energy-Resolved Detection of Precipitating Electrons of 30-100 keV by a Sounding Rocket Associated With Dayside Chorus Waves

Sugo, S; Kawashima, O; Kasahara, S; Asamura, K; Nomura, R; Miyoshi, Y; Ogawa, Y; Hosokawa, K; Mitani, T; Namekawa, T; Sakanoi, T; Fukizawa, M; Yagi, N; Fedorenko, Y; Nikitenko, A; Yokota, S; Keika, K; Hori, T; Koehler, C

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126 巻 ( 3 ) 2021年3月

Active auroral arc powered by accelerated electrons from very high altitudes 査読有り

Shun Imajo, Yoshizumi Miyoshi, Yoichi Kazama, Kazushi Asamura, Iku Shinohara, Kazuo Shiokawa, Yoshiya Kasahara, Yasumasa Kasaba, Ayako Matsuoka, Shiang Yu Wang, Sunny W.Y. Tam, Tzu‐Fang ‐F Chang, Bo‐Jhou ‐J Wang, Vassilis Angelopoulos, Chae Woo Jun, Masafumi Shoji, Satoko Nakamura, Masahiro Kitahara, Mariko Teramoto, Satoshi Kurita, Tomoaki Hori

SCIENTIFIC REPORTS 11 巻 ( 1 ) 2021年1月

Development of remote HF wave receiver in the backlobe direction of the SuperDARN Hokkaido East radar: Initial observations

Nishitani, N; Hamaguchi, Y; Hori, T

POLAR SCIENCE 28 巻 2021年

Plasma and Field Observations in the Magnetospheric Source Region of a Stable Auroral Red (SAR) Arc by the Arase Satellite on 28 March 2017

Inaba, Y; Shiokawa, K; Oyama, S; Otsuka, Y; Oksanen, A; Shinbori, A; Gololobov, AY; Miyoshi, Y; Kazama, Y; Wang, SY; Tam, SWY; Chang, TF; Wang, BJ; Yokota, S; Kasahara, S; Keika, K; Hori, T; Matsuoka, A; Kasahara, Y; Kumamoto, A; Kasaba, Y; Tsuchiya, F; Shoji, M; Shinohara, I; Stolle, C

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125 巻 ( 10 ) 2020年10月

Arase Observation of the Source Region of Auroral Arcs and Diffuse Auroras in the Inner Magnetosphere 査読有り

K. Shiokawa, M. Nosé, S. Imajo, Y. M. Tanaka, Y. Miyoshi, K. Hosokawa, M. Connors, M. Engebretson, Y. Kazama, S. Y. Wang, S. W.Y. Tam, Tzu Fang Chang, Bo Jhou Wang, K. Asamura, S. Kasahara, S. Yokota, T. Hori, K. Keika, Y. Kasaba, M. Shoji, Y. Kasahara, A. Matsuoka, I. Shinohara

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125 巻 ( 8 ) 2020年8月

Comprehensive Observations of Substorm-Enhanced Plasmaspheric Hiss Generation, Propagation, and Dissipation 査読有り

Liu, NG; Su, ZP; Gao, ZL; Zheng, HN; Wang, YM; Wang, S; Miyoshi, Y; Shinohara, I; Kasahara, Y; Tsuchiya, F; Kumamoto, A; Matsuda, S; Shoji, M; Mitani, T; Takashima, T; Kazama, Y; Wang, BJ; Wang, SY; Jun, CW; Chang, TF; Tam, SWY; Kasahara, S; Yokota, S; Keika, K; Hori, T; Matsuoka, A

GEOPHYSICAL RESEARCH LETTERS 47 巻 ( 2 ) 2020年1月

A framework for estimating spherical vector fields using localized basis functions and its application to SuperDARN data processing 査読有り

S. Nakano, T. Hori, K. Seki, N. Nishitani

Earth, Planets and Space 72 巻 ( 1 ) 2020年

Observation of High-Energy Particles in the Inner Radiation Belt by the HEP Instrument of the Arase Satellite

TODA Honoka, MIYAKE Wataru, MITANI Takefumi, TAKASHIMA Takeshi, MIYOSHI Yoshizumi, PARK Inchun, HORI Tomoaki

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 18 巻 ( 6 ) 頁： 398 - 403 2020年

記述言語：英語出版者・発行元：THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

The high-energy electron experiments (HEP) instrument on board the Arase satellite employs two sensors, HEP-L and HEP-H, and was designed to measure electrons with energies from 70 keV to 2 MeV. The recent Van Allen Probes observations indicate that MeV electron flux is very small in the inner radiation belt, while the HEP has detected significant counts at MeV energy channels in the inner radiation belt. Counts in the inner radiation belt are registered similarly at different energy channels of HEP-H and higher energy channels of HEP-L, and show no clear energy dependence. Their properties suggest contamination of high-energy protons that populate densely the inner radiation belt. In order to identify the energy of the penetrating protons we compare the spatial distribution of the HEP counts with NASA's AP9 mean model. We find that the primary peak of the count distribution measured with HEP in MeV energy range is located at L = 1.5 at the magnetic equator, which in in agreement of > 60 MeV inner belt protons of AP9 mean model. The secondary distribution is also found at higher L values, which can be attributed to MeV protons. We have been conducting Geant4 simulation for penetrating protons into the HEP. Our result of the simulation is consistent with suggestions of analysis on the spatial distribution.

DOI： 10.2322/tastj.18.398

Cusp and Nightside Auroral Sources of O + in the Plasma Sheet 査読有り

L. M. Kistler, C. G. Mouikis, K. Asamura, S. Yokota, S. Kasahara, Y. Miyoshi, K. Keika, A. Matsuoka, I. Shinohara, T. Hori, N. Kitamura, S. M. Petrinec, I. J. Cohen, D. C. Delcourt

Journal of Geophysical Research: Space Physics 124 巻 ( 12 ) 頁： 10036 - 10047 2019年12月

ERG observations of drift echoes during a unique period of the satellite mission 査読有り

Chang, TF; Cheng, CZ; Tam, SWY; Chiang, CY; Miyoshi, Y; Hori, T; Mitani, T; Takashima, T; Matsuoka, A; Teramoto, M; Shinohara, I

EARTH PLANETS AND SPACE 71 巻 ( 1 ) 2019年12月

Strong Diffusion of Energetic Electrons by Equatorial Chorus Waves in the Midnight-to-Dawn Sector 査読有り

Kasahara, S; Miyoshi, Y; Kurita, S; Yokota, S; Keika, K; Hori, T; Kasahara, Y; Matsuda, S; Kumamoto, A; Matsuoka, A; Seki, K; Shinohara, I

GEOPHYSICAL RESEARCH LETTERS 46 巻 ( 22 ) 頁： 12685 - 12692 2019年11月

Remote Detection of Drift Resonance Between Energetic Electrons and Ultralow Frequency Waves: Multisatellite Coordinated Observation by Arase and Van Allen Probes 査読有り

Teramoto, M; Hori, T; Saito, S; Miyoshi, Y; Kurita, S; Higashio, N; Matsuoka, A; Kasahara, Y; Kasaba, Y; Takashima, T; Nomura, R; Nosé, M; Fujimoto, A; Tanaka, YM; Shoji, M; Tsugawa, Y; Shinohara, M; Shinohara, I; Blake, JB; Fennell, JF; Claudepierre, SG; Turner, DL; Kletzing, CA; Sormakov, D; Troshichev, O

GEOPHYSICAL RESEARCH LETTERS 46 巻 ( 21 ) 頁： 11642 - 11651 2019年11月

Statistical Properties of Molecular Ions in the Ring Current Observed by the Arase (ERG) Satellite 査読有り

K. Seki, K. Keika, S. Kasahara, S. Yokota, T. Hori, K. Asamura, N. Higashio, M. Takada, Y. Ogawa, A. Matsuoka, M. Teramoto, Y. Miyoshi, I. Shinohara

Geophysical Research Letters 46 巻 ( 15 ) 頁： 8643 - 8651 2019年8月

Meridional Distribution of Middle‐Energy Protons and Pressure‐Driven Currents in the Nightside Inner Magnetosphere: Arase Observations 査読有り

S. Imajo, M. Nosé, S. Kasahara, S. Yokota, A. Matsuoka, K. Keika, T. Hori, M. Teramoto, K. Yamamoto, S. Oimatsu, R. Nomura, A. Fujimoto, I. Shinohara, Y. Miyoshi

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124 巻 ( 7 ) 頁： 5719 - 5733 2019年7月

Response of the Ionosphere‐Plasmasphere Coupling to the September 2017 Storm: What Erodes the Plasmasphere so Severely? 査読有り

Yuki Obana, Naomi Maruyama, Atsuki Shinbori, Kumiko K. Hashimoto, Mariangel Fedrizzi, Masahito Nos{\'{e, Yuichi Otsuka, Nozomu Nishitani, Tomoaki Hori, Atsushi Kumamoto, Fuminori Tsuchiya, Shoya Matsuda, Ayako Matsuoka, Yoshiya Kasahara, Akimasa Yoshikawa, Yoshizumi Miyoshi, Iku Shinohara

Space Weather 17 巻 ( 6 ) 頁： 861 - 876 2019年5月

Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars

Nishitani, N; Ruohoniemi, JM; Lester, M; Baker, JBH; Koustov, AV; Shepherd, SG; Chisham, G; Hori, T; Thomas, EG; Makarevich, RA; Marchaudon, A; Ponomarenko, P; Wild, JA; Milan, SE; Bristow, WA; Devlin, J; Miller, E; Greenwald, RA; Ogawa, T; Kikuchi, T

PROGRESS IN EARTH AND PLANETARY SCIENCE 6 巻 2019年3月

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