Research on Earthquake Information Based on ENPEMF Signal Time-Frequency Analysis

Abstract

Based on the study of earthquake information surface Yao natural electromagnetic field has become an important method to study earthquake precursors. This paper studies the relationship between ENPEMF and the occurrence of earthquakes, and discusses the characteristics of electromagnetic precursors that can be observed before the earthquake. In this paper, the definition of Hilbert Huang transform (HHT) is studied and applied to the two dimensional and H dimensions of the data of the earth's natural pulsed electric field analysis of time-frequency energy spectrum. It is concluded that, according to different functions, it is necessary to adjust the noise coefficient to adapt to the signal in order to obtain good results.