Zobrazeno 1 - 10
of 246
pro vyhledávání: '"Oksavik Kjellmar"'
Publikováno v:
Journal of Space Weather and Space Climate, Vol 12, p 39 (2022)
This paper details the first large-scale, interhemispheric statistical study into ionospheric fast flow (>900 m/s) channels in the polar cap using the SuperDARN radar network. An automatic algorithm was applied to 6 years of data (2010–2016) from 8
Externí odkaz:
https://doaj.org/article/ff96c7a7ebac4059beb59d1989f70709
Autor:
Zheng Yuhao, Xiong Chao, Jin Yaqi, Liu Dun, Oksavik Kjellmar, Xu Chunyu, Zhu Yixun, Gao Shunzu, Wang Fengjue, Wang Hui, Yin Fan
Publikováno v:
Journal of Space Weather and Space Climate, Vol 12, p 40 (2022)
Different indices have been used to reflect, or monitor the ionospheric scintillation, e.g. the detrended carrier phase, σφ, S4, the rate of change of the vertical total electron content index (vROTI), as well as the ionosphere‐free linear combin
Externí odkaz:
https://doaj.org/article/712e2a58458440288a3f65ff81468564
Autor:
Jin Yaqi, Moen Jøran I., Oksavik Kjellmar, Spicher Andres, Clausen Lasse B.N., Miloch Wojciech J.
Publikováno v:
Journal of Space Weather and Space Climate, Vol 7, p A23 (2017)
This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the EISCAT Svalbard radar (ESR) a
Externí odkaz:
https://doaj.org/article/11b6c9dd58be4cef865cbdeb11692ede
Publikováno v:
Journal of Space Weather and Space Climate, Vol 3, p A02 (2013)
This paper presents research on polar cap ionosphere space weather phenomena conducted during the European Cooperation in Science and Technology (COST) action ES0803 from 2008 to 2012. The main part of the work has been directed toward the study of p
Externí odkaz:
https://doaj.org/article/f03907480daf4e15bbf87532bdc76d00
Autor:
Oksavik Kjellmar, Lorentzen Dag Arne, Chernouss Sergey, Brekke Pål, Dyrland Margit, Sigernes Fred, Deehr Charles Sterling
Publikováno v:
Journal of Space Weather and Space Climate, Vol 1, Iss 1, p A03 (2011)
This work compares the methods by Starkov (1994a) and Zhang & Paxton (2008), that calculate the size and location of the auroral ovals as a function of planetary Kp index. The ovals are mapped in position and time onto a solar illuminated surface mod
Externí odkaz:
https://doaj.org/article/c6b5d3544f8743579f0effc1e338ee47
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics March 2024 256
Akademický článek
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Akademický článek
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Autor:
Moen, Jøran, Oksavik, Kjellmar, Alfonsi, Lucilla, Daabakk, Yvonne, Romano, Vineenzo, Spogli, Luca
This paper presents research on polar cap ionosphere space weather phenomena conducted during the European Cooperation in Science and Technology (COST) action ES0803 from 2008 to 2012. The main part of the work has been directed toward the study of p
Externí odkaz:
http://arxiv.org/abs/1708.08617
Direct impact excitation by precipitating electrons is believed to be the main source of 630.0 nm emissions in the cusp ionosphere. However, this paper investigates a different source, 630.0 emissions caused by thermally excited atomic oxygen O$(^{1}
Externí odkaz:
http://arxiv.org/abs/1706.00318