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研究了中国大陆各Ⅰ级活动地块区强震活动特点, 包括强震活动的总体水平、地震应变能释放速率、震级频度关系、震源破裂特性和地震应力场特征等, 以及由GPS资料给出的各活动地块运动变形特征, 如各地块运动的速度、地块变形的应变速率、最大主压应变方向、地块运动变形中的张、压状态等. 在此基础上, 对中国陆区Ⅰ级活动地块区的强震活动特点和地壳运动变形性状进行对比研究, 给出各活动地块的构造动力环境及其运动变形的性状决定其地震活动的总体状况, 包括: 活动地块现今地壳运动变形的应变速率与地震应变能释放呈线性相关; 由震源机制给出的各活动地块的地震应力场与由GPS观测给出的现今地壳运动应变(应力)场的同一性, 以及震源破裂类型与地壳形变张、压状态的一致性等. 这些结果显示了中国大陆活动地块及其运动性状对强震孕育发生的控制作用.
The characteristics of strong earthquakes, including the overall level of strong earthquakes, the release rate of seismic strain energy, the relationship between magnitude and frequency, the rupture characteristics of seismic sources and the characteristics of seismic stress field are studied. Such as the movement speed of each block, the strain rate of the deformation of the block, the direction of the maximum principal compressive strain, the tension and compression state in the movement deformation of the block, etc. On this basis, The comparison between the characteristics of strong earthquakes and crustal deformations in the first-level active land area of continental landform shows that the tectonic dynamic environment of each active landmass and the characters of its motion deformation determine the overall condition of the seismic activity, including: The present strain rate of crustal deformation is linearly correlated with the release of seismic strain energy. The seismic stress field of each active mass given by focal mechanism is consistent with the current crustal strain (stress) field given by GPS observations. As well as the consistency between the type of earthquake rupture and crustal deformation and compression state, etc. These results show that the active massifs Control of students.