Polygon “Simeiz-Katsively” - changes in the average pole of the Earth and the geomagnetic field over the last century

Larisa Volvach,Galina Kurbasova,Andrej Dmytrotsa,Dmitry Neyachenko,P Yermolov

doi:10.1051/itmconf/20193015004

Abstract

The character of changing the trajectory of the middle of the North geographical pole of the Earth's surface over the last century is studied. The peculiarities in the changes of its coordinates are established. The epochs of the appearance of especial points are compared with the epochs of jumps in the data on the parameters of the geomagnetic field. A model of secular variations of geomagnetic declination at a point with geodetic coordinates of 90° north latitude, 0° west longitude is obtained. Coherent relationships have been established between changes in the parameters of the Earth’s middle pole and the geomagnetic field over the past century.

Highlights

Unlike two geographic poles, it is customary to consider four poles characterizing the Earth's magnetic field: two geomagnetic and two magnetic.The north geomagnetic and magnetic poles belong to the conditional distribution of the field into geomagnetic and magnetic
A geomagnetic field, measured at any point on the earth's surface, is a combination of several magnetic fields generated by various sources
Comparison of the time of occurrence of singular points on the graphs of changes in the positions of geographical and geomagnetic poles contributes to further modeling of the relationships and, at this stage of knowledge, physical interpretation

Summary

Introduction

It is customary to consider four poles characterizing the Earth's magnetic field: two geomagnetic and two magnetic. A geomagnetic field, measured at any point on the earth's surface, is a combination of several magnetic fields generated by various sources. These fields overlap and interact with each other. More than 90% of the measured field is generated inside the planet and in the earth's crust. This part of the geomagnetic field is often called the main magnetic field. The interconnection between processes in different shells of the Earth allows the possibility of synchronization of internal and external mechanical movements, and the events reproduced by them even in the absence of causal relationships between these events. Comparison of the time of occurrence of singular points on the graphs of changes in the positions of geographical and geomagnetic poles contributes to further modeling of the relationships and, at this stage of knowledge, physical interpretation

Motion parameters of the geographic and geomagnetic north poles

Findings

Conclusion