山西历史强震震中和沉降中心的关系

Epicenters of Strong Earthquakes and Subsiding Centers in Shanxi

根据对历史地震震中和山西断陷带内沉降中心的研究,发现该带内的强震震中与沉降中心有很好的对应关系。以现有的资料为基础,统计了各沉降中心内第四系与新生界的比值(Q/Kz)。结果表明,强震的发生与沉降中心的 Q/Kz值有一定的对应规律。根据这一结果,近一步讨论了512年7 1/2级地震的震中位置。

It is discovered that there is a close corresponding relationship between the centers of strong earthquakes within Shanxi rift and the centers of subsidences through the studies of epicenters of the strong earthquakes in history and the subsiding centers in the rift. Statistics of the ratios of the Quarternary System within each subsiding center and Cenozoic group (Q/Kz)are made on the basis of the data now available. The results indicate that there are certain corresponding regularities between the occurran-ces of strong earthquakes and the Q/Kz ratios of the subsiding centers. Furthermore, the epicenter location of the earthquake (M7 1/2) occurred in 512 AD is discussed.