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加卸载响应比理论的主要思路是 :系统在稳定状态时加载响应与卸载响应的比值与非稳定状态时加载响应与卸载响应的比值是完全不同的。大震前加卸载响应比升高和能量加速释放这两种现象可以用来对地震进行中期预报。同时 ,加卸载响应比理论和能量加速释放可能有相同的物理机制。为了验证这种地震预报方法的可行性 ,我们研究了几例发生在澳大利亚与中国 ,M 5 0～ 7 9之间的地震 ,其中包括破坏严重的澳大利亚纽卡斯尔地震和中国的唐山地震。我们利用以震源中心一定范围内的数据计算了震前的加卸载响应比和能量加速释放的幂律拟合。能量幂律加速释放存在一组最佳的拟合 ,一定范围内加卸载响应比达最大值表明加卸载响应比也有一个临界区尺度。进一步讲 ,加卸载响应比与能量加速释放的临界区尺度是相似的。这些结果表明加卸载响应比与能量加速释放有相同的物理机制。进一步的研究可能会对这种物理机制提供更好的解释 ,同时也能对地震的中期预报提供理论基础
The main idea of loading-unloading response ratio theory is: the ratio of loading response to unloading response in the steady state is completely different from the ratio of loading response to unloading response in the unstable state. Two phenomena, the increase of unload response ratio and the acceleration of energy release before large earthquakes, can be used for medium-term earthquake prediction. At the same time, loading and unloading responses may have the same physical mechanism as theory and energy-accelerated release. In order to verify the feasibility of this earthquake prediction method, we studied several earthquakes that occurred between M 0 0 and 7 9 in Australia and China, including the devastating earthquake in Newcastle, Australia and the Tangshan earthquake in China. We use the data from a certain range of focal points to calculate the power law fitting of unloading response ratio and energy acceleration release before earthquakes. There is a set of best fit for energy-law-accelerated release. The maximum value of loading-unloading response within a certain range indicates that there is also a critical region scale for the loading-unloading response ratio. Further, the loading-unloading response is similar to the critical zone scale for energy-accelerated release. These results show that the unloading response has the same physical mechanism as the energy acceleration release. Further research may provide a better explanation of this physical mechanism and provide a theoretical basis for the medium-term prediction of earthquakes