On Interdependence of the Paleomagnetic Field Characteristics

TL;DR

This study analyzes 170 million years of geomagnetic field data, revealing relationships between paleointensity, variation amplitude, and reversal frequency, with significant changes during specific geological periods, and compares findings to dynamo models.

Contribution

It provides a comprehensive analysis of long-term geomagnetic field characteristics and their interdependence, linking empirical data to dynamo theory.

Findings

Paleointensity correlates with variation amplitude.

Reversal frequency inversely relates to paleointensity.

Major changes occurred during Early Cretaceous, Middle Paleogene, and Neogene.

Abstract

The behaviour of the geomagnetic field characteristics (mean values of the paleointensity, amplitude of its variations and reversal frequency) during the last 170 million years was analyzed. It was found that the mean values of the paleointensity were in direct relation to amplitude of its variations and in reverse relation to reversal frequency. The most considerable changes of the Earth magnetic field characteristics occurred in Early Cretaceous, Middle Paleogene and Neogene. The analysis of conformity of the reconstructed characteristics behaviour of a geomagnetic field to an alfa-omega- dynamo model was made.