Solar cycle changes in the high latitude solar wind

Details Solar cycle changes in the high latitude solar wind Solar cycle changes in the high latitude solar wind

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sscs.nasa..233r&link_type=abstract

In NASA. Goddard Space Flight Center Study of the Solar Cycle from Space p 233-243 (SEE N80-17944 08-92)

Physics

Scintillation, Solar Cycles, Solar Wind, Solar Wind Velocity, Solar Activity, Solar Magnetic Field, Wind Velocity Measurement

Scientific paper

Measurements of the solar wind velocity during the period 1971-79 using the technique of interplanetary scintillation are discussed. The average wind speed was faster than 500 km/s at latitudes above 30 deg for most of 1973-77. The fast polar stream, observed to become much narrower in 1978-79 is examined. The narrowing of the polar streams coincided with the emergence of sunspots at midlatitudes, with the start of the new solar cycle, and with a corresponding contraction of the polar coronal holes. The theory that the solar magnetic field controls the large scale structure of the solar wind is discussed in relation to the results.

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