Results 21 to 30 of about 30,979 (263)

Cusp structures: combining multi-spacecraft observations with ground-based observations [PDF]

Annales Geophysicae, 2003
Recent simultaneous observations of cusp structures with Polar, FAST and Interball revealed remarkably similar features at spacecraft crossing the cusp. Such stable cusp structures could be observed up to several hours only during stable solar wind
K. J. Trattner, K. J. Trattner, S. A. Fuselier, T. K. Yeoman, A. Korth, M. Fraenz, C. Mouikis, H. Kucharek, L. M. Kistler, C. P. Escoubet, H. R` eme, I. Dandouras, J. A. Sauvaud, J. M. Bosqued, B. Klecker, C. Carlson, T. Phan, J. P. McFadden, E. Amata, L. Eliasson   +19 more
doaj   +1 more source

Comparison of multi-point measurements of current sheet structure and analytical models [PDF]

Annales Geophysicae, 2008
Current density profiles of 22 thin current sheets, crossed by four Cluster spacecraft in the magnetotail are compared with the self-consistent model of anisotropic 1-D equilibrium, including several species of quasi-adiabatic (transient) ions and ...
A. V. Artemyev, A. A. Petrukovich, L. M. Zelenyi, H. V. Malova, H. V. Malova, V. Y. Popov, V. Y. Popov, R. Nakamura, A. Runov, S. Apatenkov   +9 more
doaj   +1 more source

Polar and Cluster observations of a dayside inverted-V during conjunction [PDF]

Annales Geophysicae, 2007
We investigate particle and fields data during a conjunction of the Polar and Cluster spacecraft. This conjunction occurs near the dayside cusp boundary layer when a dayside inverted-V was observed in the particle data of both satellites.
J. D. Menietti, R. A. Frahm, A. Korth, F. S. Mozer, Y. Khotyaintsev   +4 more
doaj   +1 more source

Dynamical processes in space: Cluster results [PDF]

Annales Geophysicae, 2013
After 12 years of operations, the Cluster mission continues to successfully fulfil its scientific objectives. The main goal of the Cluster mission, comprised of four identical spacecraft, is to study in three dimensions small-scale plasma structures ...
C. P. Escoubet, M. G. G. T. Taylor, A. Masson, H. Laakso, J. Volpp, M. Hapgood, M. L. Goldstein   +6 more
doaj   +1 more source

An Integrated Nonlinear Analysis (INA) Software for Space Plasma Turbulence

Earth and Space Science, 2023
We built an integrated nonlinear analysis software (INA)‐designed to study space plasma turbulence and intermittency. The MATLAB programming environment was used for the algorithmic development and implementation of methods for spectral analysis ...
Costel Munteanu, Péter Kovács, Marius Echim   +2 more
doaj   +1 more source

Conjugate observations of quasi‐periodic emissions by Cluster and DEMETER spacecraft [PDF]

Journal of Geophysical Research: Space Physics, 2013
AbstractQuasi‐periodic (QP) emissions are electromagnetic emissions at frequencies of about 0.5–4 kHz that are characterized by a periodic time modulation of the wave intensity. Typical periods of this modulation are on the order of minutes. We present a case study of a large‐scale long‐lasting QP event observed simultaneously on board the DEMETER ...
Němec, F., Santolík, O., Parrot, Michel, Pickett, J. S., Hayosh, M., Cornilleau-Wehrlin, Nicole   +5 more
openaire   +4 more sources

Spatial and temporal characteristics of poloidal waves in the terrestrial plasmasphere: a CLUSTER case study [PDF]

Annales Geophysicae, 2007
Oscillating magnetic field lines are frequently observed by spacecraft in the terrestrial and other planetary magnetospheres. The CLUSTER mission is a very suitable tool to further study these Alfvén waves as the four CLUSTER spacecraft provide for an
S. Schäfer, K. H. Glassmeier, P. T. I. Eriksson, V. Pierrard, K. H. Fornaçon, L. G. Blomberg   +5 more
doaj   +1 more source

Detection of meteoroid hypervelocity impacts on the Cluster spacecraft: First results [PDF]

Journal of Geophysical Research: Space Physics, 2017
AbstractWe present the first study of dust impact events on one of the Earth‐orbiting Cluster satellites. The events were identified in the measurements of the wide band data (WBD) instrument on board the satellite operating in monopole configuration. Since 2009 the instrument is operating in this configuration due to the loss of three electric probes ...
Jakub Vaverka, Asta Pellinen‐Wannberg, Johan Kero, Ingrid Mann, Alexandre De Spiegeleer, Maria Hamrin, Carol Norberg, Timo Pitkänen   +7 more
openaire   +3 more sources

Cluster magnetotail observations of a tailward-travelling plasmoid at substorm expansion phase onset and field aligned currents in the plasma sheet boundary layer [PDF]

Annales Geophysicae, 2005
We present data from both ground- and space-based instruments for a substorm event which occurred on 5 October 2002, with an expansion phase onset time of 02:50 UT determined from the ground magnetometer data.
N. C. Draper, M. Lester, S. W. H. Cowley, J. A. Wild, S. E. Milan, G. Provan, A. Grocott, A. N. Fazakerley, A. Lahiff, J. A. Davies, J.-M. Bosqued, J. P. Dewhurst, R. Nakamura, C. J. Owen, J. Waterman, M. G. Henderson, H. J. Singer, E. Donovan   +17 more
doaj   +1 more source

Accuracy of multi-point boundary crossing time analysis [PDF]

Annales Geophysicae, 2011
Recent multi-spacecraft studies of solar wind discontinuity crossings using the timing (boundary plane triangulation) method gave boundary parameter estimates that are significantly different from those of the well-established single-spacecraft ...
J. Vogt, S. Haaland, S. Haaland, G. Paschmann   +3 more
doaj   +1 more source