The solar-eclipse effect on Pc3 geomagnetic pulsations
Abstract
It is demonstrated that the effect of a solar eclipse (e.g., that of July 31, 1981) on Pc3 pulsations is manifested in a decrease of their amplitude, which is evidently connected with the screening of ionizing radiation during the eclipse. The eclipse effect can be identified according to the global modulation of the Pc3 amplitude by the IMF orientation; changes in Pc3 intensity due to local effects can be determined according to the amplitude ratio of two stations in different eclipse zones. The degree of the eclipse effect on the Pc3 amplitude for the different stations depends on the eclipse phase.
- Publication:
-
Geomagnetism and Aeronomy
- Pub Date:
- February 1987
- Bibcode:
- 1987Ge&Ae..27..122B
- Keywords:
-
- Geomagnetic Pulsations;
- Solar Eclipses;
- Solar Terrestrial Interactions;
- Amplitudes;
- Polarization Characteristics;
- Solar Radiation