Zobrazeno 1 - 10
of 1 102
pro vyhledávání: '"K. Shiokawa"'
Autor:
S. Oyama, K. Hosokawa, H. Vanhamäki, A. Aikio, T. Sakanoi, L. Cai, I. I. Virtanen, K. Shiokawa, N. Nishitani, A. Shinbori, Y. Ogawa
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 14, Pp n/a-n/a (2023)
Abstract A thermospheric wind data set from a Fabry‐Perot interferometer (630 nm) and the ion velocity from a Dynasonde in Tromsø, Norway, was analyzed for nine winter seasons to study the dynamics of the thermosphere and F‐region ionosphere at
Externí odkaz:
https://doaj.org/article/46480dca218345279f66037e96bcbfeb
Autor:
I. A. Daglis, L. C. Chang, S. Dasso, N. Gopalswamy, O. V. Khabarova, E. Kilpua, R. Lopez, D. Marsh, K. Matthes, D. Nandy, A. Seppälä, K. Shiokawa, R. Thiéblemont, Q. Zong
Publikováno v:
Annales Geophysicae, Vol 39, Pp 1013-1035 (2021)
In October 2017, the Scientific Committee on Solar-Terrestrial Physics (SCOSTEP) Bureau established a committee for the design of SCOSTEP's Next Scientific Programme (NSP). The NSP committee members and authors of this paper decided from the very beg
Externí odkaz:
https://doaj.org/article/8c35064704694a71b532e9f059acb97b
Autor:
H. Takahashi, P. Essien, C. A. O. B. Figueiredo, C. M. Wrasse, D. Barros, M. A. Abdu, Y. Otsuka, K. Shiokawa, GuoZhu Li
Publikováno v:
Earth and Planetary Physics, Vol 5, Iss 5, Pp 368-377 (2021)
Large Scale Wave Structures (LSWS) in the equatorial ionospheric F-region were observed by measuring spatial and temporal variations within detrended total electron content (dTEC) data obtained by ground-based GNSS receivers over the South American c
Externí odkaz:
https://doaj.org/article/bdd709c0f3d5421195c82edc0f7110d8
Autor:
V. L. Narayanan, S. Nozawa, S.-I. Oyama, I. Mann, K. Shiokawa, Y. Otsuka, N. Saito, S. Wada, T. D. Kawahara, T. Takahashi
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 2343-2361 (2021)
We present a detailed investigation of the formation of an additional sodium density peak at altitudes of 79–85 km below the main peak of the sodium layer based on sodium lidar and airglow imager measurements made at Ramfjordmoen near Tromsø, Norw
Externí odkaz:
https://doaj.org/article/6f58be73fff54684ad7c1f1d4897fe5a
Autor:
M. Nosé, A. Matsuoka, A. Kumamoto, Y. Kasahara, M. Teramoto, S. Kurita, J. Goldstein, L. M. Kistler, S. Singh, A. Gololobov, K. Shiokawa, S. Imajo, S. Oimatsu, K. Yamamoto, Y. Obana, M. Shoji, F. Tsuchiya, I. Shinohara, Y. Miyoshi, W. S. Kurth, C. A. Kletzing, C. W. Smith, R. J. MacDowall, H. Spence, G. D. Reeves
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-17 (2020)
Abstract We investigate the longitudinal structure of the oxygen torus in the inner magnetosphere for a specific event found on 12 September 2017, using simultaneous observations from the Van Allen Probe B and Arase satellites. It is found that Probe
Externí odkaz:
https://doaj.org/article/a7cf58ac62094ff5afeffda40c13dd88
Publikováno v:
Annales Geophysicae, Vol 36, Pp 1597-1605 (2018)
We developed user-friendly software based on Matsuda et al.'s (2014) 3D-FFT method (Matsuda-transform, M-transform) for airglow imaging data analysis as a function of Interactive Data Language (IDL). Users can customize the range of wave parameters t
Externí odkaz:
https://doaj.org/article/93a5430a92954a17b6a23aeb9b486a11
Publikováno v:
Annales Geophysicae, Vol 35, Pp 1131-1142 (2017)
We statistically analyzed severe magnetic fluctuations in the nightside near-Earth plasma sheet at 6–12 RE (Earth radii; 1 RE = 6371 km), because they are important for non-magnetohydrodynamics (non-MHD) effects in the magnetotail and are conside
Externí odkaz:
https://doaj.org/article/31b9dc29cc6d4306a1ee93d21e079e95
Autor:
D. Fukushima, K. Shiokawa, Y. Otsuka, M. Kubota, T. Yokoyama, M. Nishioka, S. Komonjinda, C. Y. Yatini
Publikováno v:
Earth, Planets and Space, Vol 69, Iss 1, Pp 1-10 (2017)
Abstract We conducted geomagnetically conjugate observations of 630-nm airglow for a midnight brightness wave (MBW) at Kototabang, Indonesia [geomagnetic latitude (MLAT): 10.0°S], and Chiang Mai, Thailand (MLAT: 8.9°N), which are geomagnetically co
Externí odkaz:
https://doaj.org/article/cbcf15f63bee4b9d881690addb6cdad8
Autor:
N. Balan, S. Tulasiram, Y. Kamide, I. S. Batista, J. R. Souza, K. Shiokawa, P. K. Rajesh, N. J. Victor
Publikováno v:
Earth, Planets and Space, Vol 69, Iss 1, Pp 1-11 (2017)
Abstract A computer program is developed to automatically identify the geomagnetic storms in Dst index by applying four selection criteria that minimize non-storm-like fluctuations. The program is used to identify the storms in Kyoto Dst and USGS Dst
Externí odkaz:
https://doaj.org/article/b1149e1ecfce4b88aeaf63e34b18ebe1
Autor:
Y. Nakamura, K. Shiokawa, Y. Otsuka, S. Oyama, S. Nozawa, T. Komolmis, S. Komonjida, Dave Neudegg, Colin Yuile, J. Meriwether, H. Shinagawa, H. Jin
Publikováno v:
Earth, Planets and Space, Vol 69, Iss 1, Pp 1-13 (2017)
Abstract Fabry–Perot interferometer (FPI) is an instrument that can measure the temperature and wind velocity of the thermosphere through observations of airglow emission at a wavelength of 630.0 nm. The Solar-Terrestrial Environment Laboratory/Ins
Externí odkaz:
https://doaj.org/article/11c9140dd6114ae296928f9f11cabd2a