首页|期刊导航|中国地震研究（英文版）|The Precursory Meanings of the Deviation of the Magnitude Frequency Distribution of Earthquakes from the Gutenberg Richter Law

The Precursory Meanings of the Deviation of the Magnitude Frequency Distribution of Earthquakes from the Gutenberg Richter Law

Lu Peng Li Zhixiong Tao Benzao Li Shengqiang Zeren Zhima Wu Ting Wang Lifeng Zhai Luyuan

中国地震研究（英文版）2006，Vol.20Issue(4)：426-434,9.

The Precursory Meanings of the Deviation of the Magnitude Frequency Distribution of Earthquakes from the Gutenberg Richter Law

Lu Peng ¹Li Zhixiong ²Tao Benzao ³Li Shengqiang ²Zeren Zhima ²Wu Ting ²Wang Lifeng ³Zhai Luyuan⁴

作者信息

1. Institute of Disaster Prevention of Science and Technology, Sanhe 065201, China
2. Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China
3. Wuhan University, Hubei Province, Wuhan 430079, China
4. China Earthquake Networks Center, China Earthquake Administration, Beijing 100036, China
折叠

摘要

Abstract

The Gutenberg-Richter law (G-R law) of the magnitude-frequency distribution of earthquakes has been an important base in seismology for a long time. However, the actual magnitudefrequency distribution usually deviates from the G-R law. Based on the experimental results of three different rock samples, which contain macro-asperity, compressional en-echelon fault and model-Ⅲ shear fault, the correlative coefficient (r) was calculated by fitting the sequences of the acoustic emissions with the G-R law in every scanning time window. We investigated the changes of the correlative coefficient, which describes the actual deviation of magnitudefrequency distribution of earthquakes from the G-R law within the specific scanning time window. According to the results of the rock samples containing macro-asperity and compressional en-echelon fault respectively, the value decreases prior to the rock fracture, meaning that the deviation of magnitude-frequency distribution from the G-R law tends to be larger. The result of the model-Ⅲ shear fault didn't show obvious decrease before the final rock fracture. Actually, the studies of some earthquakes also show deviation before the occurrence of moderate earthquakes. The results obtained in this paper will provide us with some useful dues for studying precursors before the occurrence of moderate earthquakes with the data of regional earthquake activities.

关键词

Rock fracture experiment/Gutenberg-Richter law/Deviation/Earthquake prediction

Key words

Rock fracture experiment/Gutenberg-Richter law/Deviation/Earthquake prediction

分类

天文与地球科学

引用本文复制引用

Lu Peng,Li Zhixiong,Tao Benzao,Li Shengqiang,Zeren Zhima,Wu Ting,Wang Lifeng,Zhai Luyuan..The Precursory Meanings of the Deviation of the Magnitude Frequency Distribution of Earthquakes from the Gutenberg Richter Law[J].中国地震研究（英文版）,2006,20(4):426-434,9.

基金项目

This research was sponsored by the Joint Earthquake Science Foundation, China (A07007). （A07007）

中国地震研究（英文版）

ISSN：2096-9996

访问量0

下载量0

段落导航