Zobrazeno 1 - 10
of 4 705
pro vyhledávání: '"S, Yokota"'
Autor:
K. Yamamoto, A. V. Rubtsov, D. V. Kostarev, P. N. Mager, D. Yu. Klimushkin, M. Nosé, A. Matsuoka, K. Asamura, Y. Miyoshi, S. Yokota, S. Kasahara, T. Hori, K. Keika, Y. Kasahara, A. Kumamoto, F. Tsuchiya, M. Shoji, S. Nakamura, I. Shinohara
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 8, Pp n/a-n/a (2024)
Abstract We present the first direct evidence of an in situ excitation of drift‐compressional waves driven by drift resonance with ring current protons in the magnetosphere. Compressional Pc4–5 waves with frequencies of 4–12 mHz were observed b
Externí odkaz:
https://doaj.org/article/44009355bb344e94b396c093eb6481c9
Autor:
L. M. Kistler, K. Asamura, S. Kasahara, Y. Miyoshi, C. G. Mouikis, K. Keika, S. M. Petrinec, M. L. Stevens, T. Hori, S. Yokota, I. Shinohara
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract Both solar wind and ionospheric sources contribute to the magnetotail plasma sheet, but how their contribution changes during a geomagnetic storm is an open question. The source is critical because the plasma sheet properties control the enh
Externí odkaz:
https://doaj.org/article/1d5ffd3f1abf4fb6b6ad99723e90b807
Autor:
M. Persson, S. Aizawa, N. André, S. Barabash, Y. Saito, Y. Harada, D. Heyner, S. Orsini, A. Fedorov, C. Mazelle, Y. Futaana, L. Z. Hadid, M. Volwerk, G. Collinson, B. Sanchez-Cano, A. Barthe, E. Penou, S. Yokota, V. Génot, J. A. Sauvaud, D. Delcourt, M. Fraenz, R. Modolo, A. Milillo, H.-U. Auster, I. Richter, J. Z. D. Mieth, P. Louarn, C. J. Owen, T. S. Horbury, K. Asamura, S. Matsuda, H. Nilsson, M. Wieser, T. Alberti, A. Varsani, V. Mangano, A. Mura, H. Lichtenegger, G. Laky, H. Jeszenszky, K. Masunaga, C. Signoles, M. Rojo, G. Murakami
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
BepiColombo mission had two Venus flybys on its way to Mercury. Here, the authors show that during its second flyby of Venus BepiColombo has crossed the stagnation region, which was predicted by the models.
Externí odkaz:
https://doaj.org/article/640ab46597644bcfb540215a614d0b2c
Autor:
N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, D. J. Gershman, Y. Miyoshi, M. Kitahara, Y. Katoh, H. Kojima, S. Nakamura, M. Shoji, Y. Saito, S. Yokota, B. L. Giles, W. R. Paterson, C. J. Pollock, A. C. Barrie, D. G. Skeberdis, S. Kreisler, O. Le Contel, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, R. E. Ergun, R. B. Torbert, J. L. Burch
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-12 (2022)
Excitation of whistler-mode waves by cyclotron instability is considered as the likely generation process of the waves. Here, the authors show direct observational evidence for locally ongoing secular energy transfer from the resonant electrons to th
Externí odkaz:
https://doaj.org/article/ad624c4396ec4f62824af55a223f9b45
Autor:
Y. Miyoshi, K. Hosokawa, S. Kurita, S.-I. Oyama, Y. Ogawa, S. Saito, I. Shinohara, A. Kero, E. Turunen, P. T. Verronen, S. Kasahara, S. Yokota, T. Mitani, T. Takashima, N. Higashio, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, T. Hori, K. Keika, M. Shoji, M. Teramoto, S. Imajo, C. Jun, S. Nakamura
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract Pulsating aurorae (PsA) are caused by the intermittent precipitations of magnetospheric electrons (energies of a few keV to a few tens of keV) through wave-particle interactions, thereby depositing most of their energy at altitudes ~ 100 km.
Externí odkaz:
https://doaj.org/article/909b20563ea64a88863b05f22a43f019
Autor:
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
Publikováno v:
Geophysical Research Letters, Vol 46, Iss 15, Pp 8643-8651 (2019)
Abstract Molecular ions in the magnetosphere can be a tracer of fast ion outflows from the deep ionosphere. Statistical properties of molecular ions (O2+/NO+/N2+) in the ring current are investigated based on ion composition measurements (
Externí odkaz:
https://doaj.org/article/35c171f4c7d74ed99f01659bdb7ee063
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol IV-2-W5, Pp 127-132 (2019)
Herbaceous vegetation on riverdike is important to prevent soil erosion, which may lead to collapse of riverdikes and consequently severe flooding. To keep suitable vegetation condition and secure visibility of riverdike for inspection, managers need
Externí odkaz:
https://doaj.org/article/a19c61ce453d4d25a6d454b6b427f2d9
Publikováno v:
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-15 (2018)
Abstract Low-energy ion experiments–ion mass analyzer (LEPi) is one of the particle instruments onboard the ERG satellite. LEPi is an ion energy-mass spectrometer which covers the range of particle energies from < 0.01 to 25 keV/q. Species of incom
Externí odkaz:
https://doaj.org/article/aaae5ed9e464402eabfc4f6169b93ea2
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