Zobrazeno 1 - 10
of 314
pro vyhledávání: '"E. Amata"'
Autor:
S. Savin, E. Amata, L. Zelenyi, V. Lutsenko, J. Safrankova, Z. Nemecek, N. Borodkova, J. Buechner, P. W. Daly, E. A. Kronberg, J. Blecki, V. Budaev, L. Kozak, A. Skalsky, L. Lezhen
Publikováno v:
Annales Geophysicae, Vol 30, Pp 1-7 (2012)
We present multi spacecraft measurements in the magnetosheath (MSH) and in the solar wind (SW) by Interball, Cluster and Polar, demonstrating that coherent structures with magnetosonic Mach number up to 3 – Supermagnetosonic Plasma Streams (SPS)
Externí odkaz:
https://doaj.org/article/c97f14ba00ab4ce6a3257d5ee26d1ce9
Publikováno v:
Nonlinear Processes in Geophysics, Vol 18, Iss 5, Pp 697-707 (2011)
Some features, such as vortex structures often observed through a wide spread of spatial scales, suggest that ionospheric convection is turbulent and complex in nature. Here, applying concepts from information theory and complex system physics, we fi
Externí odkaz:
https://doaj.org/article/457d2ff6e539460085151f92fedc7b65
Publikováno v:
Annales Geophysicae, Vol 27, Pp 2423-2438 (2009)
We use SuperDARN data to study high-latitude ionospheric convection over a three hour period (starting at 22:00 UT on 2 January 2003), during which the Interplanetary Magnetic Field (IMF) flipped between two states, one with By>>|Bz| and one with
Externí odkaz:
https://doaj.org/article/dce2a8fdb63d4670860bb4bfed578f6a
Publikováno v:
Annales Geophysicae, Vol 26, Pp 2937-2951 (2008)
On 6 January 1998 an interplanetary shock hit the magnetosphere around 14:15 UT and caused a reconfiguration of the northern high-latitude ionospheric convection. We use SuperDARN, spacecraft and ground magnetometer data to study such reconfigurat
Externí odkaz:
https://doaj.org/article/2a7f7c9a6e564a8dac3e9b9d66fe7611
Publikováno v:
Annales Geophysicae, Vol 25, Pp 1877-1885 (2007)
Recent Cluster observations of the vicinity of the high latitude magnetopause indicate the presence of beams of singly charged oxygen ions, which are of ionospheric origin. In this paper we examine the role of magnetic turbulence combined with a
Externí odkaz:
https://doaj.org/article/3fb09ea91f084d38a811ec14680eaa36
Publikováno v:
Annales Geophysicae, Vol 24, Pp 989-999 (2006)
In the past years several operational Dst forecasting algorithms, based on both IMF and solar wind plasma parameters, have been developed and used. We describe an Artificial Neural Network (ANN) algorithm which calculates the Dst index on the basi
Externí odkaz:
https://doaj.org/article/5903876379b14c23b248a92a33f86b0e
Autor:
E. Amata, S. Savin, M. André, M. Dunlop, Y. Khotyaintsev, M. F. Marcucci, A. Fazakerley, Y. V. Bogdanova, P. M. E. Décréau, J. L. Rauch, J. G. Trotignon, A. Skalsky, S. Romanov, J. Buechner, J. Blecki, H. Rème
Publikováno v:
Nonlinear Processes in Geophysics, Vol 13, Iss 4, Pp 365-376 (2006)
We study plasma transport at a thin magnetopause (MP), described hereafter as a thin current sheet (TCS), observed by Cluster at the southern cusp on 13 February 2001 around 20:01 UT. The Cluster observations generally agree with the predictions of t
Externí odkaz:
https://doaj.org/article/2540fddd386f4b61b8db6fb0b2ea4a15
Autor:
S. Savin, E. Amata, M. Andre, M. Dunlop, Y. Khotyaintsev, P. M. E. Decreau, J. L. Rauch, J. G. Trotignon, J. Buechner, B. Nikutowski, J. Blecki, A. Skalsky, S. Romanov, L. Zelenyi, A. M. Buckley, T. D. Carozzi, M. P. Gough, P. Song, H. Reme, A. Volosevich, H. Alleyne, E. Panov
Publikováno v:
Nonlinear Processes in Geophysics, Vol 13, Iss 4, Pp 377-392 (2006)
Proceeding with the analysis of Amata et al. (2005), we suggest that the general feature for the local transport at a thin magnetopause (MP) consists of the penetration of ions from the magnetosheath with gyroradius larger than the MP width, and that
Externí odkaz:
https://doaj.org/article/3475c6c4ab914f0bac2016bb1142032e
Publikováno v:
Annales Geophysicae, Vol 23, Pp 1771-1783 (2005)
In this work we perform a statistical analysis of the ionospheric echo response observed by six radars of the SuperDARN network in the Northern Hemisphere, over 236 Sudden Impulses (SI) of solar wind dynamic pressure events (from 1997 through 2000)
Externí odkaz:
https://doaj.org/article/33160ac6baba4d71a968a2d9c28d1442
Autor:
S. Savin, L. Zelenyi, S. Romanov, I. Sandahl, J. Pickett, E. Amata, L. Avanov, J. Blecki, E. Budnik, J. Büchner, C. Cattell, G. Consolini, J. Fedder, S. Fuselier, H. Kawano, S. Klimov, V. Korepanov, D. Lagoutte, F. Marcucci, M. Mogilevsky, Z. Nemecek, B. Nikutowski, M. Nozdrachev, M. Parrot, J. L. Rauch, V. Romanov, T. Romantsova, C. T. Russell, J. Safrankova, J. A. Sauvaud, A. Skalsky, V. Smirnov, K. Stasiewicz, J. G. Trotignon, YU. Yermolaev
Publikováno v:
Annales Geophysicae, Vol 22, Pp 183-212 (2004)
We advance the achievements of Interball-1 and other contemporary missions in exploration of the magnetosheath-cusp interface. Extensive discussion of published results is accompanied by presentation of new data from a case study and a comparison o
Externí odkaz:
https://doaj.org/article/798c33191cd440f2aa5601f32ab42018