Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm21a0775c&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM21A-0775
Physics
2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2764 Plasma Sheet, 7859 Transport Processes, 7863 Turbulence
Scientific paper
One of the keypoint in the understanding of the plasma transport in the geotail is represented by the topology of the magnetic field in this region. Recently, it has been suggested that the magnetic field topology in the magnetotail plasma and neutral sheet could be equivalent to a disorder medium consisting of coherent magnetic field and plasma structures immersed in a turbulent medium (Chang, 1999, 2001; Consolini and Chang, 2001). Here, we present a case study of the motion of the magnetic field vector tip as observed by INTERBALL Tail in the plasma and neutral sheet. We find the evidence of a Levy nature of the magnetic field fluctuations, showing long correlated jumps of the vector-tip. These results are discussed in relation with the existence of a complex magnetic field topology in the geotail regions as suggested by Chang (1999).
Amata Ermanno
Consolini Giuseppe
de Michelis Paola
Savin Sergei
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