| An experimental study on variation of b value during deformation of rock samples with different structural models |
| |
| 作者姓名： | 陈顺云 刘力强 马胜利 马 瑾 |
| |
| 作者单位： | State Key Laboratory of Earthquake Dynamics，Institute of Geology，China Earthquake Administration，Beijing 100029，China，State Key Laboratory of Earthquake Dynamics，Institute of Geology，China Earthquake Administration，Beijing 100029，China，State Key Laboratory of Earthquake Dynamics，Institute of Geology，China Earthquake Administration，Beijing 100029，China，State Key Laboratory of Earthquake Dynamics，Institute of Geology，China Earthquake Administration，Beijing 100029，China |
| |
| 基金项目： | National Natural Science Foundation of China (Grant No. 40072067) and Minister of Science and Technology of China (2004BA601B01). |
| |
| 摘 要： | Introduction Analyses of the b value in the frequency-magnitude relation (Gutenberg & Richter curve, G-R curve), lgN=a?bM, is one of important methods for earthquake prediction. It is often used to study the state of tectonic deformation and regional stress field. Many studies on the b value have been made in aspects of seismicity, experimental modeling (acoustic emission) and theory (Mogi, 1962; Scholz, 1968; LI et al, 1978; MA, 1978; CHEN, 1977; GENG, 1986; DU and MA, 1986; CAI et…
|
An experimental study on variation of b value during deformation of rock samples with different structural models |
| |
| CHEN Shun-yun,LIU Li-qiang,MA Sheng-li,MA Jin.An experimental study on variation of b value during deformation of rock samples with different structural models[J].Acta Seismologica Sinica(English Edition),2005,18(3). |
| |
| Authors: | CHEN Shun-yun LIU Li-qiang MA Sheng-li MA Jin |
| |
| Abstract: | A preliminary study of b value of rocks with two kinds of structural models has been made on the base of a new acoustic emission recording system. It shows that b value of the sample decreases obviously when the sample with compressive en echelon faults changes into a tensile one after interchange occurs between stress axis σ1 and σ2. A similar experiment is observed when the sample with tensile en echelon faults changes into that with a bend fault after two segments of the en echelon fault linking up. These facts indicate that the variation of b value may contain the information of the regional dominant structural model. Therefore, b-value analyses could be a new method for studying regional dominant structural models. |
| |
| Keywords: | b value of acoustic emission structural model en echelon fault bend fault |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
