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印度半岛上科依纳-瓦尔纳地区的地震被认为是由水库引发的。但是,通过对可用地震资料的分析表明,该地区持续高发的地震活动还有可能受到断层带的几何形态及其通过应力传递的相互作用的影响。从地震分布及其震源机制推断的这些明显的断层带的取向表明,在一个断层带内发生的地震事件会增加另一个断层带上的静应力,使该地区频繁而且连续地发生地震。本文的结果表明,虽然水库作用的效应确实会促使断层滑动,但是应力触发机制似乎是持续高发地震活动的一个重要原因,因为它会使一些稳定的断层变得不稳定,这与我们所推断的运动方式是一致的。
The earthquake in the Kojina-Varna region of the Indian peninsula is thought to be caused by a reservoir. However, the analysis of available seismic data shows that the sustained high seismic activity in the area is also likely to be affected by the geometry of the fault zone and its interaction with stress transfer. The apparent orientation of these fault zones deduced from the distribution of the earthquake and its focal mechanisms suggest that seismic events within one fault zone increase the static stresses on the other and cause frequent and continuous earthquakes in the area. The results of this paper show that while the reservoir effect does indeed contribute to fault slippage, the stress-triggering mechanism appears to be an important cause of sustained high seismic activity because it destabilizes some stable faults, which is consistent with our inferred The way of exercise is the same.