福州乌鸦咀泉电导率典型异常特征及机理初探

乌鸦咀泉电导率具有明显的夏高冬低年动态变化,如果受到构造应力变化的影响,一般会产生畸变,其异常特征:振荡的短临异常,在年变正常中局部出现转折或加速下降和上升,破年变异常。初步探讨水化异常机理,乌鸦咀泉电导率异常幅度和异常持续时间基本上能反映与震级大小成正比,与震中距成反比。

Preliminary Discussion on the Typical Anomalies and the Mechanism of Hydro-Specific Conductance of Wuyazui Spring in Fuzhou

There are obvious annual dynamic changes in the hydro-specific conductance in Wuyazui Spring that feature as higher in summer and lower in winter. When affected by the tectonic stress, the regular curves show aberration with the precursory characteristics such as surge in the impending term, broken annual trend anomalies, transitions or accelerated falls and rises in the regular curves. The anomaly mechanism of the hydrochemistry is preliminarily discussed in the paper, which shows that the extent and duration of precursory anomalies of hydro-specific conductance of Wuyazui Spring are basically in direct ratio to the bulk of earthquake but in inverse ratio to the distance of earthquake.