Migration of the northern geomagnetic pole and the fall of temperature on the Earth 8200 years ago

Abstract

We have analyzed the paleomagnetic data on lake sediments. For known values of declination, inclination and the site position in the framework of a model of the geomagnetic dipole the pole position (GMP) was evaluated as a function of time for the past 10,000 years The values obtained for the position of the geomagnetic poles were presented in the form of an expansion in the empirical modes (EMD). It is shown that the latitude and longitude do not change stochastically with time, but have regular cyclical components. Velocity of drift of the GMP has been estimated. The correlation analysis of accumulation rate of Greenland ice and of the position of GMP are carried out and it is shown that there is a significant correlation between these data. The data on changes in the latitude of GMP that taken place 8.2 thousand years ago are discussed.