福建省现代地壳垂直运动与断裂活动

RECENT CRUSTAL VERTICAL MOVEMENT AND FAULT ACTIVITY OF FUJIAN PROVINCE

根据福建省境内１９７２年以来两次精密水准复测资料，利用速率面拟合法研究福建省现今地壳垂直运动的特征，并结合本区地质构造和地震活动性探讨这种运动的地球物理意义。资料分析表明，本区内新华夏系构造带是强震活动的主要场所，强震活动地点则又受到与这些新华夏系构造交汇的次一级的东西向构造、北西向构造和环状构造活动的制约；在主要构造断块的交接带上则表现为较显著的地壳垂直运动的差异性，差异活动较强烈的地区与本区地震活动的分布特征有着良好的一致性。

Using two period precise leveling data in 1972 in Fujian province, the characters of the recent crustal vertical movement of Fujian province are studied by the velocity surface fitting method, and the geophysical meaning of the vertical movement are discussed by combining the local geological structure with earthquake activities. The analysis results indicate that the Neocathaysian tectonic belt in the area is the important field of the strong earthquake activity, but the specific location of which is restricted to the secondary westeast、westnorth or ring structure which are converged to the Neocathaysian structure. The obvious difference of crustal vertical movement exists in the conjoint zone of the main tectonic block. The area where the differential mobility is strong identifies with the area where the seismicity exist. The earthquakes often occur in the region of the great velocity change of the crustal vertical movement or near its sea area.