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过去曾一时认为,板块内应力及板块运动速度对检验及鉴别板块驱动力的模式提供了绝大部分可用约束条件,在缺少直接应力测量的情况下,地震分布及震源机制解可与不同模式所预测的相类比。这样的模型假定海洋岩石圈经受几种力。由于岩石圈的冷却及增厚引起的密度差产生了“洋脊推力”。合应力取决于包括板块底部的粘曳力及作用于洋脊、转换断层与海沟边界在内的其他诸力,早期的模式把所有的力当作常数,并主要考虑板块边界问题,认为由于洋脊
In the past, it was believed that the stress in the plate and the velocity of the plate provided most of the available constraints on the mode of testing and identifying the driving force of the plate. In the absence of direct stress measurement, the distribution of the earthquake and the mechanism of focal mechanism could be related to different models Predicted analogy. Such a model assumes that the oceanic lithosphere is subject to several forces. As a result of the density difference caused by cooling and thickening of the lithosphere, “ocean ridge thrust” is generated. Cohesive forces depend on the drag forces at the bottom of the plate and on other forces acting on the ridge, transition fault and trench boundaries. The earlier model considered all forces as constants and the plate boundary problem was mainly considered because the ridge