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许多解释震时发光的物理机制都以地震裂缝高速传播时产生很高的温升为条件。本文从弹塑性断裂动力学的理论出发研究了传播的裂缝尖端附近的温度场。数值结果表明,地震时传播裂缝尖端附近可产生几百度至近千度的温升。
Many of the physical mechanisms that explain the glow of earthquakes are conditioned by the high temperature rise that occurs when the earthquakes propagate at high speeds. Based on the theory of elasto-plastic fracture kinetics, the temperature field around the propagating crack tip is studied. The numerical results show that the temperature rise of several hundred degrees to nearly a thousand degrees can be generated near the tip of the propagating crack during an earthquake.