宁波台水温强远震前异常与强雷电干扰异常对比分析

COMPARATIVE ANALYSIS ON THE PRECURSORY ANOMALIES OF GROUNDWATER TEMPERATURE FOR REMOTE STRONG EARTHQUAKE AND THUNDER INTERFERENCE IN NINGBO SEISMOSTATION

摘要: 通过对宁波台水温在日本北海道8级地震前出现的异常和强雷电干扰后引起的异常进行对比分析, 认为从异常曲线的形态变化、异常的持续时间和最大异常量等指标, 较难区分是强震前异常还是强雷电干扰异常。因此, 作为地震监测、分析预报人员对测值的正常动态变化规律应该做到心中有数, 一旦出现异常就能被立即发现, 并及时检查落实, 排除干扰, 捕捉可能出现的临震前兆现象。

Abstract: The water temperature anomalies in Ningbo Seismostation before Hokkaido M8 earthquake of Japan are compared with thunder interferences.After analysis to the shape of anomaly curve, duration and maximum value we concluded that it is hard to distinguish the anomaly from strong thunder interferences.Thus, in order to exclude interference and catch imminent precursor, we must know the observation data fairly well.