Physics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...204...60w&link_type=abstract
Science, vol. 204, Apr. 6, 1979, p. 60-62. Research supported by the Max C. Fleischmann Foundation
Physics
2
Interplanetary Magnetic Fields, Low Pressure, Polarity, Troughs, Longitude, Solar Electrons, Solar Position, Vorticity, Winter
Scientific paper
The relationship between interplanetary magnetic field polarity and the area of low pressure (300 mbar) troughs near 180 deg W longitude is examined. For most of the winters from 1951 to 1973, the trough size, as indicated by the vorticity area index, is found to be significantly greater when the interplanetary magnetic field is directed away from the sun than when the field is directed towards the sun. This relationship is shown to hold for various combinations of winters and for most months within a winter, and be most pronounced at the time when polarity was determined. It is suggested that the phenomenon is caused by merging of interplanetary magnetic field lines, when polarity is directed away from the sun, with geomagnetic field lines in the Northern Hemisphere (where these measurements were made), allowing energetic particle fluxes to have access to the north polar region
Duffy Philip B.
Olson Roger H.
Roberts Walter Orr
Schatten Kenneth H.
Scherrer Philip H.
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