【摘要】 对宁波台数字化地热(水温)仪器3次受到强雷电干扰所记录的异常特征进行分析后认为:地震台站观测仪器数字化改造以后,强雷电干扰已成为影响仪器设备正常运行、观测资料连续稳定的重要因素之一。雷电越强,对地热(水温)观测资料的影响越大,影响的持续时间越长,反之越小,与雷电的持续时间无关。引起的测值异常量可以是正常波动值的一倍到数百倍,影响时间从1小时到数天。强雷电干扰引起的异常如果没有被及时发现,则较难与前兆异常区别。但只要避雷措施达到技术要求,一般的雷电天气是没有影响的。更多还原

【Abstract】 Based on the study of the anomalous characters of the digital thermometer records disturbed by three strong thunderbolts at Ningbo Station, we think that the interference of strong thunderbolts is one of the most important factors that affect the instrument to normally run and observation data to be continue and steady after it was reconstructed digitally. The stronger thunderbolt, the greater and the longer duration the thunderbolt has an effect on the observation data of terrestrial heat. Contrarily, it is smaller, and it doesn’t relate with thunderbolt duration. The anomaly quantum of measuring value is one to hundreds times as big as natural undulation, influencing time is from an hour to a few days. The anomalies aroused by strong thunderbolt are hardly distinguished from precursor anomalies if they aren’t found in time. But generic thunderbolt weather hasn’t any effect if only thunderbolt-resistant measures reach tech-demands.更多还原