Faculty Profiles - SHIOKAWA, Kazuo

Papers - SHIOKAWA, Kazuo

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Conjugate observation of auroral finger-like structures by ground-based all-sky cameras and THEMIS satellites Open Access

Nishi Katsuki, Shiokawa Kazuo, Fruehauff Dennis

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 7 ) page： 7291-7306 2017.7

Geospace exploration project: Arase (ERG) Open Access

E. R.G, Project Group, Y. Miyoshi, Y. Kasaba, I. Shinohara, T. Takashima, K. Asamura, H. Matsumoto, N. Higashio, T. Mitani, S. Kasahara, S. Yokota, S. Wang, Y. Kazama, Y. Kasahara, S. Yagitani, A. Matsuoka, H. Kojima, Y. Katoh, K. Shiokawa, K. Seki, M. Fujimoto, T. Ono

Journal of Physics: Conference Series Vol. 869 ( 1 ) 2017.7

Language：English Publishing type：Research paper (international conference proceedings)

© Published under licence by IOP Publishing Ltd. The ERG (Exploration of energization and Radiation in Geospace) is Japanese geospace exploration project. The project focuses on relativistic electron acceleration mechanism of the outer belt and dynamics of space storms in the context of the cross-energy coupling via wave-particle interactions. The project consists of the satellite observation team, the ground-based network observation team, and integrated-data analysis/simulation team. The satellite was launched on December 20 2016 and has been nicknamed, "Arase". This paper describes overview of the project and future plan for observations.

DOI： 10.1088/1742-6596/869/1/012095

Open Access

Web of Science

Scopus

Coordinated observations of postmidnight irregularities and thermospheric neutral winds and temperatures at low latitudes Open Access

Dao Tam, Otsuka Yuichi, Shiokawa Kazuo, Nishioka Michi, Yamamoto Mamoru, Buhari Suhaila M., Abdullah Mardina, Husin Asnawi

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 7 ) page： 7504-7518 2017.7

Electron density variability of nighttime D region ionosphere in Vietnamese and Japanese sectors

Le Minh Tan, Shiokawa Kazuo, Nguyen Ngoc Thu, Tran Quoc Ha

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 6 ) page： 6543-6551 2017.6

Simultaneous observations of magnetospheric ELF/VLF emissions in Canada, Finland, and Antarctica Open Access

Yonezu Yusuke, Shiokawa Kazuo, Connors Martin, Ozaki Mitsunori, Manninen Jyrki, Yamagishi Hisao, Okada Masaki

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 6 ) page： 6442-6454 2017.6

First evidence of patchy flickering aurora modulated by multi-ion electromagnetic ion cyclotron waves Open Access

Fukuda Yoko, Kataoka Ryuho, Uchida Herbert Akihito, Miyoshi Yoshizumi, Hampton Donald, Shiokawa Kazuo, Ebihara Yusuke, Whiter Daniel, Iwagami Naomoto, Seki Kanako

GEOPHYSICAL RESEARCH LETTERS Vol. 44 ( 9 ) page： 3963-3970 2017.5

Contribution of storm time substorms to the prompt electric field disturbances in the equatorial ionosphere Open Access

Hui Debrup, Chakrabarty D., Sekar R., Reeves G. D., Yoshikawa A., Shiokawa K.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 5 ) page： 5568-5578 2017.5

Effect of the Ionospheric Parameter Variations at Altitudes of 80-350 km on Diurnal Dynamics of the ULF Magnetic Field Spectra at Midlatitudes

Ermakova E. N., Kotik D. S., Pershin A. V., Pilipenko V. A., Shiokawa K.

RADIOPHYSICS AND QUANTUM ELECTRONICS Vol. 59 ( 12 ) page： 947-961 2017.5

Automatic selection of Dst storms and their seasonal variations in two versions of Dst in 50 years Open Access

Balan N., Tulasiram S., Kamide Y., Batista I. S., Souza J. R., Shiokawa K., Rajesh P. K., Victor N. J.

EARTH PLANETS AND SPACE Vol. 69 2017.4

Measurement of thermospheric temperatures using OMTI Fabry-Perot interferometers with 70-mm etalon Open Access

Nakamura Y., Shiokawa K., Otsuka Y., Oyama S., Nozawa S., Komolmis T., Komonjida S., Neudegg Dave, Yuile Colin, Meriwether J., Shinagawa H., Jin H.

EARTH PLANETS AND SPACE Vol. 69 2017.4

Large-scale traveling ionospheric disturbances observed by GPS dTEC maps over North and South America on Saint Patrick's Day storm in 2015 Open Access

Figueiredo C. A. O. B., Wrasse C. M., Takahashi H., Otsuka Y., Shiokawa K., Barros D.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 4 ) page： 4755-4763 2017.4

A scheme for forecasting severe space weather

Balan N., Ebihara Y., Skoug R., Shiokawa K., Batista I. S., Ram S. Tulasi, Omura Y., Nakamura T., Fok M. -C.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 122 ( 3 ) page： 2824-2835 2017.3

Localized polar cap precipitation in association with nonstorm time airglow patches Open Access

Zou Ying, Nishimura Yukitoshi, Lyons Larry R., Shiokawa Kazuo

GEOPHYSICAL RESEARCH LETTERS Vol. 44 ( 2 ) page： 609-617 2017.1

On the effect of thermospheric neutral winds on post-midnight field-aligned irregularities at low latitudes Reviewed

Tam Dao, Yuichi Otsuka, Kazuo Shiokawa, Michi Nishioka, Mamoru Yamamoto, Suhaila M. Buhari, Mardina Abdullah, Asnawi Husin

2017 XXXIIND GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM OF THE INTERNATIONAL UNION OF RADIO SCIENCE (URSI GASS) Vol. 2017-January page： 1 - 4 2017

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE

We investigated a post-midnight Field-Aligned Irregularities (FAIs) event observed with the Equatorial Atmosphere Radar (EAR) at Kototabang (0.2 degrees S, 100.3 degrees E, dip lat. 10.4 degrees S) in Indonesia on the night of 9 July 2010, using a comprehensive dataset of both neutral and plasma parameters. We compared FAI echoes collocated with 630 nm airglow depletion detected by an all-sky imager. The thermospheric neutral winds and temperatures obtained by a Fabry-Perot interferometer at Kototabang and the altitudes of F-layer (h'F) observed with ionosondes at Kototabang, Chiang Mai, and Chumphon were also examined. We found that the 3-m scale post-midnight FAIs occurred within plasma bubbles. The convergence of the equatorward neutral winds happened in this particular event related to midnight temperature maximum (MTM) and that the equatorward winds in both northern and southern hemispheres could be responsible for the growth of plasma bubbles around midnight. The uplift of F-layer at low latitudes could increase the growth rate of the Rayleigh-Taylor instability. Eastward electric currents driven by the equatorward winds could also contribute to the generation of the irregularities at post-midnight.

DOI： 10.23919/URSIGASS.2017.8105106

Web of Science

Scopus

Other Link： http://orcid.org/0000-0002-4957-764X

The first long-term all-sky imager observation of lunar sodium tail Reviewed

Nishino Masaki N., Shiokawa Kazuo, Otsuka Yuichi

ICARUS Vol. 280 page： 199-204 2016.12

Ionospheric TEC Weather Map Over South America Reviewed Open Access

H. Takahashi, C. M. Wrasse, C. M. Denardini, M. B. Padua, E. R. de Paula, S. M. A. Costa, Y. Otsuka, K. Shiokawa, J. F. Galera Monico, A. Ivo, N. Sant'Anna

SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS Vol. 14 ( 11 ) page： 937 - 949 2016.11

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER GEOPHYSICAL UNION

Ionospheric weather maps using the total electron content (TEC) monitored by ground-based Global Navigation Satellite Systems (GNSS) receivers over South American continent, TECMAP, have been operationally produced by Instituto Nacional de Pesquisas Espaciais's Space Weather Study and Monitoring Program (Estudo e Monitoramento Brasileiro de Clima Especial) since 2013. In order to cover the whole continent, four GNSS receiver networks, (Rede Brasileiro de Monitoramento Continuo) RBMC/Brazilian Institute for Geography and Statistics, Low-latitude Ionospheric Sensor Network, International GNSS Service, and Red Argentina de Monitoreo Satelital Continuo, in total similar to 140 sites, have been used. TECMAPs with a time resolution of 10min are produced in 12h time delay. Spatial resolution of the map is rather low, varying between 50 and 500km depending on the density of the observation points. Large day-to-day variabilities of the equatorial ionization anomaly have been observed. Spatial gradient of TEC from the anomaly trough (total electron content unit, 1TECU=10(16)elm(-2) (TECU) <10) to the crest region (TECU>80) causes a large ionospheric range delay in the GNSS positioning system. Ionospheric plasma bubbles, their seeding and development, could be monitored. This plasma density (spatial and temporal) variability causes not only the GNSS-based positioning error but also radio wave scintillations. Monitoring of these phenomena by TEC mapping becomes an important issue for space weather concern for high-technology positioning system and telecommunication.

DOI： 10.1002/2016SW001474

Web of Science

Scopus

Localized field-aligned currents in the polar cap associated with airglow patches Reviewed

Zou Ying, Nishimura Yukitoshi, Burchill Johnathan K., Knudsen David J., Lyons Larry R., Shiokawa Kazuo, Buchert Stephan, Chen Steve, Nicolls Michael J., Ruohoniemi J. Michael, McWilliams Kathryn A., Nishitani Nozomu

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 121 ( 10 ) page： 10172-10189 2016.10

Heliospheric plasma sheet (HPS) impingement onto the magnetosphere as a cause of relativistic electron dropouts (REDs) via coherent EMIC wave scattering with possible consequences for climate change mechanisms Reviewed Open Access

B. T. Tsurutani, R. Hajra, T. Tanimori, A. Takada, R. Bhanu, A. J. Mannucci, G. S. Lakhina, J. U. Kozyra, K. Shiokawa, L. C. Lee, E. Echer, R. V. Reddy, W. D. Gonzalez

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 121 ( 10 ) page： 10130 - 10156 2016.10

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER GEOPHYSICAL UNION

A new scenario is presented for the cause of magnetospheric relativistic electron decreases (REDs) and potential effects in the atmosphere and on climate. High-density solar wind heliospheric plasmasheet (HPS) events impinge onto the magnetosphere, compressing it along with remnant noon-sector outer-zone magnetospheric similar to 10-100 keV protons. The betatron accelerated protons generate coherent electromagnetic ion cyclotron (EMIC) waves through a temperature anisotropy (T-perpendicular to/T-|| > 1) instability. The waves in turn interact with relativistic electrons and cause the rapid loss of these particles to a small region of the atmosphere. A peak total energy deposition of similar to 3 x 10(20) ergs is derived for the precipitating electrons. Maximum energy deposition and creation of electron-ion pairs at 30-50 km and at > 30 km altitude are quantified. We focus the readers' attention on the relevance of this present work to two climate change mechanisms. Wilcox et al. (1973) noted a correlation between solar wind heliospheric current sheet (HCS) crossings and high atmospheric vorticity centers at 300 mb altitude. Tinsley et al. (1994) has constructed a global circuit model which depends on particle precipitation into the atmosphere. Other possible scenarios potentially affecting weather/climate change are also discussed.

DOI： 10.1002/2016JA022499

Web of Science

Scopus

Spectral characteristics of steady quiet-time EMIC waves observed at geosynchronous orbit Reviewed Open Access

Kim Khan-Hyuk, Park Jong-Sun, Omura Yoshiharu, Shiokawa Kazuo, Lee Dong-Hun, Kim Gi-Jeong, Jin Ho, Lee Ensang, Kwon Hyuck-Jin

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Vol. 121 ( 9 ) page： 8640-8660 2016.9

Quasi-periodic rapid motion of pulsating auroras Reviewed Open Access

Fukuda Yoko, Kataoka Ryuho, Miyoshi Yoshizumi, Katoh Yuto, Nishiyama Takanori, Shiokawa Kazuo, Ebihara Yusuke, Hampton Donald, Iwagami Naomoto

POLAR SCIENCE Vol. 10 ( 3 ) page： 183-191 2016.9

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Papers - SHIOKAWA, Kazuo