Zobrazeno 1 - 10
of 166
pro vyhledávání: '"T Iyemori"'
Autor:
M Matsumura, T Iyemori, Y Tanaka, D Han, M Nose, M Utsugi, N Oshiman, H Shinagawa, Y Odagi, Y Tabata
Publikováno v:
Data Science Journal, Vol 8 (2009)
Ultra-low frequency acoustic waves called "acoustic gravity waves" or "infrasounds" are theoretically expected to resonate between the ground and the thermosphere. This resonance is a very important phenomenon causing the coupling of the solid Earth,
Externí odkaz:
https://doaj.org/article/11493738150b456f92f4e774e8d313f5
Akademický článek
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Autor:
S. Tomita, M. Nosé, T. Iyemori, H. Toh, M. Takeda, J. Matzka, G. Bjornsson, T. Saemundsson, A. Janzhura, O. Troshichev, G. Schwarz
Publikováno v:
Annales Geophysicae, Vol 29, Pp 673-678 (2011)
The Auroral Electrojet (AE) indices, which are composed of four indices (AU, AL, AE, and AO), are calculated from the geomagnetic field data obtained at 12 geomagnetic observatories that are located in geomagnetic latitude (GMLAT) of 61.7°–70°
Externí odkaz:
https://doaj.org/article/e6080bf40d2a4724abc1a94809095ff9
Publikováno v:
Journal of Geophysical Research: Space Physics. 126(8)
To understand the features of the quasistatic field-aligned currents (FACs) consisting of multiple mesoscale (∼10–100 km) upward and downward FAC regions in the duskside auroral oval, we examined the magnetic field data obtained through the const
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::328c32d3378b8a95132cc862a6774eb7
http://hdl.handle.net/2433/268291
http://hdl.handle.net/2433/268291
Publikováno v:
Annales Geophysicae, Vol 22, Pp 159-168 (2004)
We perform a case study of a favorable conjunction of an overpass of the Oersted satellite with the field-of-view of the SuperDARN Syowa East radar during an interval of the southward IMF Bz. At the time, the radar observed an L-shell aligned bound
Externí odkaz:
https://doaj.org/article/42d89a97cd734582b8c14dac24ec613d
Publikováno v:
Journal of Geophysical Research: Space Physics. 125(7)
During northward interplanetary magnetic field (IMF), irregular magnetic perturbations were observed in the duskside aurora oval via Swarm satellites instead of large‐scale Region 1/2 magnetic perturbations. By taking advantage of Swarm constellati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c50dede06f81e6e0f58cebb35b31315
http://hdl.handle.net/2433/254478
http://hdl.handle.net/2433/254478
Autor:
T. Iyemori, D. R. K. Rao
Publikováno v:
Annales Geophysicae, Vol 14, Iss 6, Pp 608-618 (0000)
Annales Geophysicae, Vol 14, Pp 608-618 (1996)
Annales Geophysicae, Vol 14, Pp 608-618 (1996)
In order to investigate the causal relationship between magnetic storms and substorms, variations of the mid-latitude geomagnetic indices, ASY (asymmetric part) and SYM (symmetric part), at substorm onsets are examined. Substorm onsets are defined by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6f63a24001ce1725ed09844800d815d
https://www.ann-geophys.net/14/608/1996/
https://www.ann-geophys.net/14/608/1996/
Autor:
Hidekatsu Jin, T. Iyemori, Michi Nishioka, Akinori Saito, Hiroyuki Shinagawa, Takuya Tsugawa, Takashi Maruyama, Mitsuru Matsumura, Yuichi Otsuka
Publikováno v:
Geophysical Research Letters. 40:5009-5013
[1] Unusual ionospheric variations were observed in the M9.0 Tohoku-oki earthquake on 11 March 2011. Among various kinds of features in the ionosphere, significant depletion of total electron content (TEC) near the epicenter was observed after the ea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d74718960f3934a21212ee6ea8b4f0e9
https://doi.org/10.1002/2013gl057627
https://doi.org/10.1002/2013gl057627
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 92:31-36
Saturation of the auroral electrojet (AE) index during storm times is a phenomenon that has been known but not fully understood. To address this puzzle, here we correlate the (provisional) AE index with net field-aligned current (Net-dB) index, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a077a72e0bb4edecd717a415a7df5150
https://doi.org/10.1016/j.jastp.2012.09.017
https://doi.org/10.1016/j.jastp.2012.09.017
Autor:
Michi Nishioka, Takuya Tsugawa, Hiroyuki Shinagawa, Akinori Saito, Chia-Hung Chen, M. Matsumura, Yuichi Otsuka, T. Iyemori
Publikováno v:
Earth, Planets and Space. 63:885-889
Numerical simulations are performed to simulate atmospheric perturbations observed at ionospheric heights just after the 2011 off the Pacific coast of Tohoku Earthquake. A time-dependent, two-dimensional, nonlinear, non-hydrostatic, compressible and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d40e83931b36bf9c73e4691d5a295da7
https://doi.org/10.5047/eps.2011.07.015
https://doi.org/10.5047/eps.2011.07.015