Zobrazeno 1 - 10
of 272
pro vyhledávání: '"M. Echim"'
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 24, Pp n/a-n/a (2023)
Abstract Observations of a quiet electrostatic auroral arc by the ALIS network on 5 March 2008 are used to infer a two‐dimensional map of the flux of precipitating energy. Among a family of numerical solutions of a stationary magnetosphere—ionosp
Externí odkaz:
https://doaj.org/article/6f786b8ee49c4fd7b76344b49d7a2233
Publikováno v:
Earth and Space Science, Vol 8, Iss 12, Pp n/a-n/a (2021)
Abstract Intermittency is a fundamental property of space plasma dynamics, characterizing turbulent dynamical variables as well as passive scalars. Its qualitative and quantitative description from in‐situ data requires an accurate estimation of th
Externí odkaz:
https://doaj.org/article/abe9a77e76924e70acc825906e79fc36
Publikováno v:
Annales Geophysicae, Vol 36, Pp 1521-1535 (2018)
In this paper we discuss numerical simulations that illustrate a physical mechanism leading to the formation of crescent-shaped electron velocity distribution functions at the edges of a high-speed plasma jet impacting on a thin, steep and impenet
Externí odkaz:
https://doaj.org/article/82dfaa73649b42a69cc4757bb11a5183
Publikováno v:
Astronomy & Astrophysics.
We derive the properties of the terrestrial magnetopause (MP) from two modelling approaches, one global-fluid/MHD, the other local-kinetic, as well as from in-situ data analysis. We use global MHD simulations of the Earth’s magnetosphere (publicly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d77c60eb60ee67f901ab1d73f6f93d7b
https://doi.org/10.5194/egusphere-egu23-7204
https://doi.org/10.5194/egusphere-egu23-7204
Publikováno v:
Annales Geophysicae, Vol 34, Pp 437-449 (2016)
In this paper we investigate quantitatively the effect of data gaps for four methods of estimating the amplitude spectrum of a time series: fast Fourier transform (FFT), discrete Fourier transform (DFT), Z transform (ZTR) and the Lomb–Scargle al
Externí odkaz:
https://doaj.org/article/f42d27ddcb9940cd9bd6662a78fbe2f9
Publikováno v:
Earth and Space Science. 9
Publikováno v:
Annales Geophysicae, Vol 31, Pp 1297-1314 (2013)
We consider cross-field plasma flow inside a field-aligned plasma slab embedded in a uniform background in a 1-dimensional geometry. This situation may arise, for instance, when long-lasting reconnection pulses inject plasma into the inner magneto
Externí odkaz:
https://doaj.org/article/28442411eaea4ed3a30e1973cdfb6f23
Autor:
J. De Keyser, M. Echim
Publikováno v:
Annales Geophysicae, Vol 31, Pp 251-261 (2013)
Strong localized high-altitude auroral electric fields, such as those observed by Cluster, are often associated with magnetospheric interfaces. The type of high-altitude electric field profile (monopolar, bipolar, or more complicated) depends on t
Externí odkaz:
https://doaj.org/article/edf7458d7ced427a8564941815c61870
Publikováno v:
Annales Geophysicae, Vol 30, Pp 283-302 (2012)
On 1 April 2004 the GUVI imager onboard the TIMED spacecraft spots an isolated and elongated polar cap arc. About 20 min later, the Cluster satellites detect an isolated upflowing ion beam above the polar cap. Cluster observations show that the io
Externí odkaz:
https://doaj.org/article/0ebcfa9990d146b7a3b02d028972adde