Physics – Space Physics
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ijrsp...8..393r&link_type=abstract
(National Physical Laboratory of India, Indian Space Research Organization, and Indian National Science Academy, Annual Radio an
Physics
Space Physics
Geomagnetism, Interplanetary Magnetic Fields, Solar Cycles, Solar Terrestrial Interactions, Tropical Regions, Boundaries, Data Processing, Magnetic Signatures, Solar Magnetic Field
Scientific paper
The response of horizontal intensity to the passage of the solar magnetic sector boundary past the earth is computed using extensive data from a low latitude station in the Indian region. The analysis is carried out separately for 3 solar cycles and for four classes of boundary passages. The results indicate that at low latitudes (1) the passages of -/+ boundary in vernal and +/- boundary in autumnal equinoctial seasons have no associated enhanced geomagnetic activity; (2) the nature and magnitude of the field response is not dependent on the magnitude of the solar cycle; (3) the 'Hale' part of the sector boundary has no associated change in the low latitude field response; and (4) the solar-magnetic-cycle (about 22 yr) has no systematic influence on the low latitude field response to boundary passage but some association may be seen during favorable conditions.
Prabhakaran Nayar S. R.
Rangarajan G. K.
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