Search Publications
Identification of broad-band waves above the auroral acceleration region: Cluster observations
Balogh, A.; André, M.; Buchert, S. +3 more
We investigate broad-band emissions at frequencies above the ion gyrofrequency on auroral field lines at geocentric distances of about 4.5 Earth radii. Observations by the Cluster satellites are used to study the wave characteristics and to determine the wave modes involved. All events include some bursts of broad-band emissions with a substantial…
Temporal-spatial structure of magnetic merging at the magnetopause inferred from 557.7-nm all-sky images
Balogh, A.; Lester, M.; Scudder, J. +7 more
Available from http://www.copernicus.org/site/EGU/annales/22/8/2917.htm?FrameEngine=false;
Local wavelet correlation: applicationto timing analysis of multi-satellite CLUSTER data
Dudok de Wit, T.; Dunlop, M.; Soucek, J. +1 more
Multi-spacecraft space observations, such as those of CLUSTER, can be used to infer information about local plasma structures by exploiting the timing differences between subsequent encounters of these structures by individual satellites. We introduce a novel wavelet-based technique, the Local Wavelet Correlation (LWC), which allows one to match t…
Thinning and expansion of the substorm plasma sheet: Cluster PEACE timing analysis
Balogh, A.; Fazakerley, A.; Owen, C. +1 more
The storage and subsequent removal of magnetic flux in the magnetotail during a geomagnetic substorm has a dramatic effect on the thickness of the cross-tail plasma sheet. The near-Earth plasma sheet is thought to thin during the growth phase and then rapidly expand after onset of the substorm. The direction of propagation, whether earthward or ta…
Instantaneous local wave vector estimation from multi-spacecraft measurements using few spatial points
Buckley, A.; Carozzi, T.; Gough, M.
Available from http://www.copernicus.org/site/EGU/annales/22/7/2633.htm?FrameEngine=false;
Cluster observes formation of high-beta plasma blobs
Glassmeier, K.; Klecker, B.; Rème, H. +4 more
Available from http://www.copernicus.org/site/EGU/annales/22/7/2391.htm?FrameEngine=false;
A joint Cluster and ground-based instruments study of two magnetospheric substorm events on 1 September 2002
Lester, M.; Bosqued, J.; Provan, G. +9 more
We present a coordinated ground- and space-based multi-instrument study of two magnetospheric substorm events that occurred on 1 September 2002, during the interval from 18:00 UT to 24:00 UT. Data from the Cluster and Polar spacecraft are considered in combination with ground-based magnetometer and HF radar data. During the first substorm event th…
Repetitive X-line Hall current structures over the dawnside ionosphere induced by successive exo-magnetosphere pressure pulses
Sarafopoulos, D.
This work is a synthesis of observational and magnetosphere model produced results. In the first place, we observe geographic latitude-dependent delays in signature arrival times at dawnside ground magnetograms. We use the IMAGE chain ground station magnetograms associated with in-situ observations obtained from the Wind, ACE, IMP-8, LANL 97A and …
Solar wind velocity at solar maximum: A search for latitudinal effects
Bavassano, B.; Bruno, R.; D'Amicis, R.
Observations by Ulysses during its second out-of-ecliptic orbit have shown that near the solar activity maximum the solar wind appears as a highly variable flow at all heliolatitudes. In the present study Ulysses data from polar latitudes are compared to contemporary ACE data in the ecliptic plane to search for the presence of latitudinal effects …
Shell-like configuration in O+ ion velocity distribution at high altitudes in the dayside magnetosphere observed by Cluster/CIS
Lundin, R.; Nilsson, H.; Rème, H. +7 more
Available from http://www.copernicus.org/site/EGU/annales/22/7/2473.htm?FrameEngine=false;