Flux transfer events - Spontaneous or driven?

Details Flux transfer events - Spontaneous or driven? Flux transfer events - Spontaneous or driven?

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..791l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 9, p. 791-794.

Physics

38

Flux Transfer Events, Interplanetary Magnetic Fields, Magnetopause, Solar Terrestrial Interactions, Earth Magnetosphere, International Sun Earth Explorers, Magnetosheath

Scientific paper

Observations of IMF during the flux transfer events (FTEs) observed in the dayside magnetopause by ISEE spacecraft are surveyed in order to test the hypothesis of Lockwood and Wild (1993) that FTEs are driven by the IMF variations in which the Bz becomes more southward rather than arising spontaneously during periods of steady IMF. The upstream solar wind data from IMP-8 or ISEE 3 are compared with the magnetosheath data from ISEE to determine the time lag between them, which makes it possible to survey the simultaneous solar wind data during the FTEs. No evidence is found to the effect that FTEs are directly correlated with southward turning of the IMF. The FTEs more frequently occur when the IMF Bz is steady. It is concluded that FTEs occur spontaneously for steady southward IMF and are not simply directly driven by the observed fluctuations in the IMF Bz component.

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