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3种模型同震剪应力分布的动态变化 模型Ⅰ显示地震在YBF位于深处平缓断层到浅处陡峭断层过渡处约深度18km左右发震; 模型Ⅱ破裂起始点同模型Ⅰ,再传至WMF; 模型Ⅲ起始破裂点位于GJF倾角过渡处, 接着传至YBF