Abstract
Abstract The temperature variations during deformation of a compressive en echelon fault set in a rock sample were measured by a surface measurement system th multi-point platinum resistance thermometers and an infrared theirnal image system. The measurements obtained by the two systems were in agreement with each other, indicating a relationship between temporal-spatial variations of the then-nd field and changes of stress and strain. At varied sfructurd positions of the rock sample, the rising of the temperature was different, implying distinct stress distributions at these positions. In the experiment, the defoirmation process of the sample included three stages: elastic deformation, stick-slip, and nipture. Grrespondingly, the variation process of temperature had also three stages, each of which had its oq temperature rising profile. And the thermal radiation field showed a similar process. These phenomena mean that the dominant mechanisms of temperature rising in sJl stages of deformation are differe...
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