Strong earthquakes occurred in the high-value region and its margins of shear strain rate, especially in the high-value region of shear strain rate in accordance with tectonic deformation background.
强震通常发生在剪切应变率的高值区及其边缘，尤其是与构造变形背景相一致的剪应变率高值区。
2
Gravity variation distribution in high negative value region is just consistent with the second shear strain's high value region of strain field obtained from GPS observation.
重力负值变化高值区的分布与GPS观测给出的应变场第二剪应变高值区一致。
3
The result indicates:when the weakly secondary shear grows(decays), the maximum value of the perturbation kinetic energy also grows(decays), and the change of the energy accelerates(slows).