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地壳中的应力变化通常通过地表附近的形变作观测约束,运用模型计算来估计。但是,地震活动变化与应力的广泛相关性(simpson and Reasenberg,1994;King,et al,1994;Jaume and Sykes,1996;Harris,et al,1995;Stein,1999)使我们认为,应力变化或许可用地震目录估计的地震发生率来计算。因为地震活动数据是日常搜集的,并具有很好的时间和空间分辨率,这种可能性相当有吸引力。但由于地震速率随应力和时间的变化都是非线性的,因而这种方法的有效性还没有被证明。这里我们给出两种方法运用地震速率随应力和时间变化的公式,由地震速率数据来反推应力变化(Dieterich,1994)。将这些方法用于夏威夷的基拉韦厄火山区,得到了与独立估计十分一致的结果,表明地震速率可作为一种实用的应力遥测计。
The stress changes in the crust are usually observed through the deformation near the earth’s surface and are estimated using model calculations. However, the wide correlation between changes in seismicity and stress (Simpson and Reasenberg, 1994; King, et al, 1994; Jaume and Sykes, 1996; Harris, et al, 1995; Stein, 1999) suggests that stress changes may be useful Earthquake catalog estimates the occurrence of earthquakes to calculate. Because seismic data is collected daily and has good temporal and spatial resolution, this possibility is quite attractive. However, the effectiveness of this method has not been proven since the seismic velocity is nonlinear with stress and time. Here we give two methods to use the formula of seismic velocity versus stress and time to reverse the stress change from the seismic velocity data (Dieterich, 1994). Applying these methods to the Kilauea volcano area in Hawaii yielded very consistent results with independent estimates, indicating that the seismic velocity can be used as a practical stress telemetry.