中国大陆东部强震区和火山区人工地震探测研究综述

介绍了东北、华北、华东和华南的强震区和火山区的地震测深研究成果，揭示了强震区和火山区的地壳深部构造背景.分析表明，地壳深部断裂、中下地壳低速层、速度结构的差异、波速比异常、泊松比和岩性的不同、上地幔顶部隆起、莫霍界面较大的起伏、复杂的壳幔过渡带、滑脱构造、深部岩浆活动等构造特征与东部地区强震形成和发生有较为密切的关系.

Review of deep seismic sounding in strong earthquake regions and volcanic regions of Eastern China

This paper briefly introduces deep seismic sounding results from strong earthquake regions and volcanic regions of Northeast China,North China,East China and South China.It reveals main crustal deep tectonic background in these regions.The analysis shows that several structural feature: deep fault in crust,the low velocity layer in the middle and lower crust,discrepancy of velocity structure,anomaly of velocity ratio,differ of Poisson ratio and lithology,top of upper mantle upheaval,larger fluctuation of Moho interface,complex crust-mantle transitional belt,detachment structure and deep magmation,are closely related with the formation and occurrence of strong earthquake in Eastern China.