Initial ISEE magnetometer results - Magnetopause observations

Details Initial ISEE magnetometer results - Magnetopause observations Initial ISEE magnetometer results - Magnetopause observations

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ssrv...22..681r&link_type=abstract

(European Space Agency, ESLAB Symposium on Advances in Magnetospheric Physics with GEOS-1 and ISEE-1 and 2, 13th, Innsbruck, Aus

Physics

213

International Sun Earth Explorers, Magnetic Measurement, Magnetometers, Magnetopause, Satellite Observation, Magnetic Fields, Magnetosheath, Satellite-Borne Instruments

Scientific paper

Magnetic-field profiles across the magnetopause are examined which were obtained by the ISEE 1 and 2 spacecraft on four passes when the spacecraft separation was only a few hundred kilometers. The velocity of the magnetopause is found to be highly irregular, ranging from 4 to over 40 km/s and varying on a shorter time scale than required for a spacecraft to cross the boundary. The thickness of the magnetopause is estimated to range from 500 to over 1000 km. Clear evidence for field-line reconnection is discerned in data obtained when the magnetosheath field was southward. This evidence consists of flux-transfer events in which reconnection begins and ends on a time scale of minutes or less, leading to oscillations in the position of the magnetopause.

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