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大地介质极化率和二次场衰减特性时序观测是探索介质新的电性参数作为前兆观测项目的研究课题。经两年的观测研究发现，极化率存在年变化形态；主要研究的放电时段应放在１０～１００ｍｓ范围；在观测时段（１９９４０３～１９９５１１）内台站３００ｋｍ范围发生的唯一一次大于５．０级的苍山５．２级地震（△３０４ｋｍ）前，极化率参数异常不明显，而极化率衰减度在该次地震前出现异常，衰减曲线极大值位移、曲线畸变、半衰时亦出现高值。对比地电阻率与极化率衰减度和半衰时的观测数据，在苍山５．２级地震前异常时间同步，呈低电阻率、高衰减度、高半衰时变化。研究结果表明应用介质新电性参数极化率作为前兆观测项目是可行的。
Tropospheric polarization and quadratic field attenuation characteristics of the temporal observation is to explore the new electrical parameters of the medium as a precursor observation project research topic. After two years of observational study, it is found that there is an annual variation in the polarizability rate. The main study discharge period should be placed in the range of 10 ~ 100ms. During the observation period (199403 ~ 199511), the only one occurring within 300km of the station Before the Cangshan M 5.2 M ≥ 5.0 earthquake (△ 304km), the anomaly of the polarizability rate was not obvious. However, the anomalous polarization rate attenuation occurred before the earthquake, the maximum displacement of the attenuation curve, the curve distortion, Half-life also appears high value. In contrast, the observed values of resistivity, polarizability attenuation and half-decay time are anomalous time synchronization before the M5.2 Cangshan earthquake with low resistivity, high attenuation and high half-decay. The results show that it is feasible to use the new electrical parameter polarizability of the medium as a precursor observation project.