Analysis of a field model of geomagnetic variations in a period range from 4 to 100 days
Abstract
An important element in the analysis of geomagnetic variations with periods of 4 to 100 days is the selection of a coordinate system in relation to which the first spherical harmonic P1(0)is determined. This paper develops a method for determining the pole position of this system with rotation of the coordinate system of observations from a series of Northern Hemisphere observatories. The pole position is determined for 1969-1971. It is noted that the results obtained make it possible to use the P1(0) source model for the purpose of deep magnetic sounding of the earth.
- Publication:
-
Geomagnetism and Aeronomy
- Pub Date:
- April 1988
- Bibcode:
- 1988Ge&Ae..28..282S
- Keywords:
-
- Geocentric Coordinates;
- Geomagnetism;
- Magnetic Variations;
- Ground Stations;
- Northern Hemisphere;
- Position (Location);
- Spherical Harmonics