Space-Time Distribution Characteristics of Energy Field of Seismic Activity for the Southeastern Part of Gansu Province to Shanxi-Gansu-Ningxia Boundary Region Moderate-Strong Earthquake Hazard Area

详细信息   

• 责任者：Luo Guofu(Earthquake Administration of Ningxia Hui Autonomous Region ; Yinchuan 750001 ; China) ; Tu Hongwei
• 刊名：Northwestern Seismological Journal
• 出版年：2012
• 卷期：34(2)
• 关键词：大震 ; great earthquakes ; 地震危险性 ; seismic risk ; 甘肃 ; Gansu Province ; 陕西 ; Shaanxi Province
• 页码：p.132-137
• 图表：illus.,2 tables,11 refs.
• 分类号：0500
• issnNo：ISSN
• isbnNo：CN62-1048/P

摘要

Using the random function theory, taking seismic energy field in the southeastern part of Gansu Province to Shanxi-Gansu-Ningxia boundary region as the random function of space and time, the time “weight” coefficients and the isogram charts of first several typical fields in the region are studied by the method of natural orthogonal function expansion. The results show that the time coefficient curves upward and downward changes with large amplitude often meaning the moderate-strong earthquake is going up, while the high values of isogram give the region of earthqake hazard.