Mass, momentum and energy transport from the Sun to the Earth by different types of the solar wind: Prognoz 7 observations

Details Mass, momentum and energy transport from the Sun to the Earth by different types of the solar wind: Prognoz 7 observations Mass, momentum and energy transport from the Sun to the Earth by different types of the solar wind: Prognoz 7 observations

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.346..217y&link_type=abstract

In ESA, Study of the Solar-Terrestrial System p 217-222 (SEE N93-31674 12-90)

Physics

2

Energy Transfer, Kinetic Energy, Magnetohydrodynamics, Mass Transfer, Satellite Observation, Solar Wind, Current Sheets, Flux Density, Heliosphere, Histograms, Prognoz Satellites, Solar Corona

Scientific paper

On the basis of Magnetohydrodynamic (MHD) parameters measured on board the Prognoz 7 satellite, five different types of solar wind streams were selected and the variations of several MHD parameters in different streams were studied. A high ratio of ion thermal to magnetic pressures is often observed in Heliospheric Current Sheet (HCS) and the streams formed during coronal mass ejections. In quasi-stationary streams (that is, in streams from coronal streamers and holes) momentum fluxes are equal, and momentum flux increases in the streams disturbed by nonstationary coronal events and in HCS. Thermal and kinetic ion energy flux in disturbed streams and HCS is higher by 2 to 3 times than in quasi-stationary streams. Nevertheless, on the whole the Sun's loss of thermal and kinetic energy in streams from coronal holes is higher than in HCS, disturbed streams, and in streams from coronal streamers.

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