Principal Satellite-Measured Three-Dimensional Statistical Characteristics of Potential Fields in East Asia and Their Relationship to Earthquake Epicenters

Abstract

The results of a geophysical analysis of data from satellite-measured geomagnetic and gravity surveys and the results of a three-dimensional statistical analysis of the geomagnetic field are examined for the purpose of obtaining estimates of some physical and geometric parameters of the lithosphere for East Asia. The first, second, third, and fourth spatial (3D) statistical moments are analyzed as generalizing characteristics of the anomalous magnetic field (AMF) on the basis of data from the MAGSAT satellite, making it possible to break down the observed magnetization into inductive and residual fields. An estimate of magnetically active thicknesses of the lithosphere is made on the basis of one of the spatial statistical parameters of this field. A comparison is made of some maps of the spatial statistical parameters of the AMF on the basis of MAGSAT data with plotted maps of the distribution of epicenters of earthquakes occurring during the period of satellite operation in Earth orbit.