Spatiotemporal Correlations of Earthquakes

TL;DR

This paper investigates the spatiotemporal correlations of earthquakes using real data from Japan and numerical simulations, revealing patterns like foreshocks, aftershocks, swarms, and seismic clustering.

Contribution

It combines empirical earthquake data with numerical models to analyze complex spatiotemporal earthquake correlations and patterns.

Findings

Identification of characteristic seismic patterns such as foreshocks and aftershocks

Analysis of recurrence-time distributions and seismic distribution functions

Observation of doughnut-like seismic patterns

Abstract

Statistical properties of earthquakes are studied both by the analysis of real earthquake catalog of Japan and by numerical computer simulations of the spring-block model in both one and two dimensions. Particular attention is paid to the spatiotemporal correlations of earthquakes, e.g., the recurrence-time distribution or the time evolution before and after the mainshock of seismic distribution functions, including the magnitude distribution and the spatial seismic distribution. Certain eminent features of the spatiotemporal correlations, e.g., foreshocks, aftershocks, swarms and doughnut-like seismic pattern, are discussed.