| An experimental study on variation of thermal fields during the deformation of a compressive en echelon fault set |
| |
| 引用本文： | LIU Peixun,MA Jin,LIU Liqiang,MA Shengli,CHEN Guoqiang. An experimental study on variation of thermal fields during the deformation of a compressive en echelon fault set[J]. 自然科学进展, 2007, 17(3): 298-304 |
| |
| 作者姓名： | LIU Peixun MA Jin LIU Liqiang MA Shengli CHEN Guoqiang |
| |
| 作者单位： | Laboratory of Earthquake Dynamics，Institute of Geology，China Earthquake Administration，Beijing 100029，China |
| |
| 基金项目： | Supported by National Natural Science Foundation of China (Grant Nos: 90202018 and 40572125)，National Program on Key Basic Research Projects (2004CB418405)，Special Founds from China Earthquake Administration |
| |
| 摘 要： | The temperature variations during deformation of a compressive en echelon fault set in a rock sample were measured by a surface measurement system with multi-point platinum resistance thermometers and an infrared thermal image system. The measurements obtained by the two systems were in agreement with each other, indicating a relationship between temporal-spatial variations of the thermal field and changes of stress and strain. At varied structural positions of the rock sample, the rising of the temperature was different, implying distinct stress distributions at these positions. In the experiment, the deformation process of the sample included three stages: elastic deformation, stick-slip, and rupture. Correspondingly, the variation process of temperature had also three stages, each of which had its own temperature rising profile. And the thermal radiation field showed a similar process. These phenomena mean that the dominant mechanisms of temperature rising in all stages of deformation are different. Experimental results provide a physical basis for the study of current fault activities by using data of satellite infrared images.
|
An experimental study on variation of thermal fields during the deformation of a compressive en echelon fault set |
| |
| LIU Peixun,MA Jin,LIU Liqiang,MA Shengli,CHEN Guoqiang. An experimental study on variation of thermal fields during the deformation of a compressive en echelon fault set[J]. , 2007, 17(3): 298-304 |
| |
| Authors: | LIU Peixun MA Jin LIU Liqiang MA Shengli CHEN Guoqiang |
| |
| Affiliation: | Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China |
| |
| Abstract: | The temperature variations during deformation of a compressive en echelon fault set in a rock sample were measured by a surface measurement system with multi-point platinum resistance thermometers and an infrared thermal image system. The measurements obtained by the two systems were in agreement with each other, indicating a relationship between temporal-spatial variations of the thermal field and changes of stress and strain. At varied structural positions of the rock sample, the rising of the temperature was different, implying distinct stress distributions at these positions. In the experiment, the deformation process of the sample included three stages: elastic deformation, stick-slip, and rupture. Correspondingly, the variation process of temperature had also three stages, each of which had its own temperature rising profile. And the thermal radiation field showed a similar process. These phenomena mean that the dominant mechanisms of temperature rising in all stages of deformation are different. Experimental results provide a physical basis for the study of current fault activities by using data of satellite infrared images. |
| |
| Keywords: | en echelon fault set stick-slip thermal infrared radiation temperature mechanism of temperature rising |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《自然科学进展》浏览原始摘要信息 |
|
点击此处可从《自然科学进展》下载全文 |
