Zobrazeno 1 - 10
of 88
pro vyhledávání: '"O. Marghitu"'
Autor:
J. Vogt, O. Marghitu, A. Blagau, L. Pick, N. Stachlys, S. Buchert, T. Sarris, S. Tourgaidis, T. Balafoutis, D. Baloukidis, P. Pirnaris
Publikováno v:
Geoscientific Instrumentation, Methods and Data Systems, Vol 12, Pp 239-257 (2023)
In situ satellite exploration of the lower thermosphere–ionosphere system (LTI) as anticipated in the recent Daedalus mission proposal to ESA will be essential to advance the understanding of the interface between the Earth's atmosphere and its spa
Externí odkaz:
https://doaj.org/article/b82cfbe55ff14917b6a86b9dd89a8bc1
Autor:
M. Palmroth, M. Grandin, T. Sarris, E. Doornbos, S. Tourgaidis, A. Aikio, S. Buchert, M. A. Clilverd, I. Dandouras, R. Heelis, A. Hoffmann, N. Ivchenko, G. Kervalishvili, D. J. Knudsen, A. Kotova, H.-L. Liu, D. M. Malaspina, G. March, A. Marchaudon, O. Marghitu, T. Matsuo, W. J. Miloch, T. Moretto-Jørgensen, D. Mpaloukidis, N. Olsen, K. Papadakis, R. Pfaff, P. Pirnaris, C. Siemes, C. Stolle, J. Suni, J. van den IJssel, P. T. Verronen, P. Visser, M. Yamauchi
Publikováno v:
Annales Geophysicae, Vol 39, Pp 189-237 (2021)
The lower-thermosphere–ionosphere (LTI) system consists of the upper atmosphere and the lower part of the ionosphere and as such comprises a complex system coupled to both the atmosphere below and space above. The atmospheric part of the LTI is dom
Externí odkaz:
https://doaj.org/article/cfe2c3bae6e04b5097c10b6750012a54
Publikováno v:
Annales Geophysicae, Vol 37, Pp 347-373 (2019)
Field-aligned currents (FACs) in the magnetosphere–ionosphere (M–I) system exhibit a range of spatial and temporal scales that are linked to key dynamic coupling processes. To disentangle the scale dependence in magnetic field signatures of auror
Externí odkaz:
https://doaj.org/article/24911f8cd886407f84d2734a91c9d2ad
Publikováno v:
Annales Geophysicae, Vol 33, Pp 79-91 (2015)
Rotational discontinuities (RDs) are governed by two relations: the Walén relation predicting that the plasma velocity observed in the deHoffmann–Teller frame equals the local Alfvén velocity and another relation that connects the variation in
Externí odkaz:
https://doaj.org/article/fca618897d4a4093935f9102d9e16b59
Publikováno v:
Annales Geophysicae, Vol 28, Pp 1813-1825 (2010)
In this article we use three years (2001, 2002, and 2004) of Cluster plasma sheet data to investigate what happens to localized energy conversion regions (ECRs) in the plasma sheet during times of high magnetospheric activity. By examining vari
Externí odkaz:
https://doaj.org/article/0803fd1605594ec3a90cfdbf163f7f84
Publikováno v:
Annales Geophysicae, Vol 28, Pp 753-778 (2010)
For a four-point mission like Cluster, the differences in position and time when the satellites detect the magnetopause or any other discontinuity, can be used to infer the discontinuity local orientation, thickness and motion. This timing techniq
Externí odkaz:
https://doaj.org/article/51ae8f88eb6d46778cb66580a47daad9
Publikováno v:
Annales Geophysicae, Vol 27, Pp 4131-4146 (2009)
Here, and in a companion paper by Hamrin et al. (2009) [Scale size and life time of energy conversion regions observed by Cluster in the plasma sheet], we investigate localized energy conversion regions (ECRs) in the Earth's plasma sheet. In to
Externí odkaz:
https://doaj.org/article/c7a9e081f82a4015a48c2f450b39907a
Publikováno v:
Annales Geophysicae, Vol 27, Pp 4147-4155 (2009)
In this article, and in a companion paper by Hamrin et al. (2009) [Occurrence and location of concentrated load and generator regions observed by Cluster in the plasma sheet], we investigate localized energy conversion regions (ECRs) in Earth's
Externí odkaz:
https://doaj.org/article/805c553a8be245f1a77bdd1e0c2d644c
Publikováno v:
Annales Geophysicae, Vol 27, Pp 3249-3273 (2009)
In the context of ESA's Cluster mission, four-point array techniques are widely used to analyze space plasma phenomena such as shocks and discontinuities, waves and turbulence, and spatial gradients. Due to failures of single instruments on the Cl
Externí odkaz:
https://doaj.org/article/414a77540e3c4b5dabf2184b5edd260c
Autor:
H. Nilsson, M. Waara, O. Marghitu, M. Yamauchi, R. Lundin, H. Rème, J.-A. Sauvaud, I. Dandouras, E. Lucek, L. M. Kistler, B. Klecker, C. W. Carlson, M. B. Bavassano-Cattaneo, A. Korth
Publikováno v:
Annales Geophysicae, Vol 26, Pp 3365-3373 (2008)
Oxygen ion outflow associated with the cusp and cleft give rise to persistent oxygen ion beams which can be observed over the polar cap. For high altitude spacecraft such as Cluster these beams are often observed for several hours on each occasion
Externí odkaz:
https://doaj.org/article/cced20a64a4241cd9c083cba68e466d3