Dynamic behavior of solar wind as revealed by a correlation study of magnetic fields observed at the Venus and Earth orbits

Details Dynamic behavior of solar wind as revealed by a correlation study of magnetic fields observed at the Venus and Earth orbits Dynamic behavior of solar wind as revealed by a correlation study of magnetic fields observed at the Venus and Earth orbits

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..16..111m&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 16, no. 9, p. (9)111-(9)114

Physics

Corotation, Interplanetary Magnetic Fields, Solar Cycles, Solar Planetary Interactions, Solar Wind, Data Correlation, Earth Orbits, Long Term Effects, Oscillations, Pioneer Venus Spacecraft, Venus (Planet)

Scientific paper

Correlations between interplanetary magnetic fields (IMFs) at 0.72 AU and 1.0 AU have been examined using data sets obtained from the Pioneer Venus orbiter and Earth-orbiting spacecraft. While the two-sector structures are evident in long-term variations at these two heliocentric distances, the corresponding auto-correlation coefficients are consistently smaller at 1.0 AU than at 0.72 AU. This suggests that the IMF structures become less persistent at 1.0 AU due to the effects of changing solar wind dynamics between the Venus and Earth orbits. Short-term variations exhibit generally poor correlations between IMFs near Venus and those near Earth, though good correlations are sometimes obtained for well-defined structures when the Sun, Venus, and Earth are closely aligned. The rather poor correlations in the background streams indicate that the IMFs are still changing between the Venus and Earth orbits under the strong influence of solar wind dynamics.

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