Abstract Observations of multiple crossings of the Earth's bow shock allow us to estimate the nature and velocity of bow shock motion. We have studied this motion with Prognoz 7, 8, 10, ISEE 1, 2 and IMP observations in two ways: by the time delay of bow shock crossings with two well separated satellites and by the difference in time between the bow shock crossings observed by one spacecraft and jumps in solar wind dynamic pressure observed by the other one. The qualitative interpretation of these data as a “surface wave” moving along the bow shock front allows us to estimate its velocity to be about several tens up to several hundreds km/s with mean value ∼100 km/s.
Bow shock motion with two-point observations: Prognoz 7, 8 and ISEE 1, 2; Prognoz 10 and IMP 8
Advances in Space Research ; 8 , 9-10 ; 171-174
01.01.1989
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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