加卸载响应比与应变能加速释放的临界现象讨论

地震 ›› 2004, Vol. 24 ›› Issue (3): 8-14.

加卸载响应比与应变能加速释放的临界现象讨论

彭克银¹, 尹祥础^1,2

1.中国地震局分析预报中心, 北京 100036;
2.中国科学院力学研究所非线性开放实验室, 北京 100080

出版日期:2004-07-31 发布日期:2021-11-29
作者简介:彭克银(1964-), 男, 湖北嘉鱼人, 副研究员, 2000年获博士学位, 主要从事地震活动性等研究。
基金资助:
国家自然科学基金项目(10232050); “十五”国家科技攻关项目(2001BA601B02-01-05-01)

Critical point hypothesis study on Load-Unload Response Ratio and accelerating release of strain energy

PENG Ke-yin¹, YIN Xiang-chu^1,2

1. Center for Analysis and Prediciton, CEA, Beijing 100036;
2. Open Laboratory of Nonlinear Mechanics, Chinese Academy of Sciences, Beijing 100080, China

Online:2004-07-31 Published:2021-11-29

摘要/Abstract

摘要： 对发生在中国大陆地区的8次地震, 用不同的区域半径分别进行应变能释放的幂率拟合和加卸载响应比计算, 发现最佳幂率拟合的区域半径与加卸载响应比最大值所对应的区域半径的对数与地震的震级呈线性关系, 且两者具有很好的一致性, 因而认为两者之间可能具有相同的物理机制, 是孕震系统进入临界状态的不同表现形式。

关键词: 临界点理论, 应变能加速释放, 加卸载响应比, 孕震区

Abstract: Both LURR- (Load-Unload Response Ratio) anomalies and best-fit power-law function of ARSE (accelerating release of strain energy) are computed using data for a range of distances from the epicenters of 8 earthquakes occurred in the mainland of China. The result shows that there is a linear relation between the logarithm of either the critical region radius (R) for ARSE or the region radius (R) for optimal LURR and the magnitude of the events. A strong correlation is evident between the ARSE and LURR critical region size suggesting that these two observations have a common physical mechanism. It means that the seismogenic system closes to critical status.

Key words: Critical point hypothesis, Accelerating release, Load-Unload Response Ratio, Seismogenic zone

中图分类号:

P315.7

彭克银, 尹祥础. 加卸载响应比与应变能加速释放的临界现象讨论[J]. 地震, 2004, 24(3): 8-14.

PENG Ke-yin, YIN Xiang-chu. Critical point hypothesis study on Load-Unload Response Ratio and accelerating release of strain energy[J]. EARTHQUAKE, 2004, 24(3): 8-14.

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