Abstract
The influence of two types of high-speed (HS) solar wind streams - coronal-hole and solar-flare-associated - on cosmic-ray intensity has been studied using the neutron monitor data of three stations for the period 1972–1984, which includes the year 1980 of solar field reversal. The cosmic-ray depressions associated with the coronal-hole streams are much smaller than the typically Forbush-like depressions. No spectral difference is found in the Forbush-like decreases between the periods before and after the polarity change.
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