Correlation analysis and causality test between Ludong-Huanghai block and South Japan

• 来源期刊: 地震学报（英文版）
• 学科: 地球科学
• 年，卷（期）: 2007,（4）
• 页码范围: 381-391
• 页数: 11页
• 分类号: P315.5
• 语种: 英文

摘要

In this paper, we make a comparative analysis and correlation test for the seismic activities in the South Japan and the Ludong-Huanghai block (a secondary tectonic unit in the North China) and approach the relationship between the energy release processes of these two areas by using co-integration analysis and Granger causality test for the time series of random variables. The results show that the seismic activities in these two areas are correlative and synchronous to a certain extent, and their release series of cumulative strain energy are contemporaneously correlative. Both energy series are first-order difference stationary processes and there is secular and steady co-integration between them. We make a positive analysis on the first-order difference energy series through Granger causality test based on vector error correction (VEC) model and find there is unilateral Granger causality and prominent co-integration between the two energy release processes.