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Title: Interplanetary Magnetic Field Sector Structure & Its Effect on Cosmic Ray Diurnal Variation
Authors: Nigam, S K
Singh, R L
Agrawal, S P
Issue Date: Aug-1978
Publisher: NISCAIR-CSIR, India
Abstract: The influence of interplanetary magnetic field sector structure and its boundary crossing on daily variation of cosmic ray intensity has been investigated for the years 1970-76, a period of declining solar activity and occurrence of unusually large high velocity solar wind streams. Its relationship with other correlated variables such as solar wind velocity (V),å Kp and mean intensity of the cosmic rays (I), shows a consistent behaviour throughout the period. It is found that, in general, the amplitude of the diurnal variation on the day of sector boundary crossing is lowest, wherea3 the time of maximum seems to be unperturbed. These results along with its effect on V, å Kp and I are reported and discussed.
Page(s): 200-204
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.07(4) [August 1978]

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