IMF sector structure and cosmic ray intensity variation

Details IMF sector structure and cosmic ray intensity variation IMF sector structure and cosmic ray intensity variation

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978pmg....29..205s&link_type=abstract

Papers in Meteorology and Geophysics, vol. 29, Dec. 1978, p. 205-215.

Physics

Geophysics

Annual Variations, Cosmic Rays, Interplanetary Magnetic Fields, Forbush Decreases, Polarity, Sectors, Solar Wind, Sudden Storm Commencements

Scientific paper

The results of Chree analysis of cosmic ray nucleonic intensity from a number of stations with epochs at the crossing of IMF sector boundary are presented together with those of IMF and solar wind parameters. Agreement in time variations among stations is excellent. There are Forbush type decreases just after the boundary whose time profile is similar to those found at the time of ssc. The variation spectrum of the former is, however, harder than that of the latter. The variations depending on the polarity change are divided into two components: an asymmetric and a symmetric variation about the boundary, of which some characteristics are investigated.

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