Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm11d..09g&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM11D-09
Physics
2712 Electric Fields (2411), 2724 Magnetopause, Cusp, And Boundary Layers, 2772 Plasma Waves And Instabilities
Scientific paper
The four-point measurements by Cluster are well adapted to study small-scale plasma structures in the plasma regions of the magnetosphere out to the solar wind. A new probe environment constructed for the Cluster electric field experiment produces electric field and spacecraft potential (density) data of very high quality. The observations used in this study are based on the period when the spacecraft had a separation of about 600 km in the tetrahedron configuration and apogee was on the dayside of the Earth. Data from the four spacecraft show that signatures in the electric field with high coherence are frequently observed for timescales of tens of seconds or longer in many plasma regions along the orbit. Both periodic waveform and solitary structures are observed. The three dimensional characteristics of the various events and their possible sources will be discussed.
André Martial
Eriksson Anders I.
Gustafsson Georg
Laakso Harri
Lindqvist Peter
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