摘要
着重分析了近年来庄市井水位在南黄海地震区3 次MS> 5.0 地震前的异常特征.通过分析得到的认识是,该井水位在5 .0 级以上地震前大都存在0 .5 a 以上的趋势异常和年变规律的变化,震前1～2 个月出现较丰富的短临前兆信息,如水位固体潮畸变、日潮差波幅增大、阶跃等微动态变化.这些分析结果曾在我省地震预报实践中发挥过较好的作用.
The anomaly characteristics of well water level at Zhuangshi,Ningbo before three M S>5.0 earthquakes in South Yellow Sea is summarized and analysed.The results show that there are more than half a year trend anomaly and variation of annual regular before M S>5.0 earthquake in most cases and short imminent term precursors appear one month or two months before the earthquake,such as variation of water level solid tide,increase of wave amplitude of date tide range and leapfrog etc.The analysis has played an important role in earthquake prediction practice of Zhejiang Province.
出处
《西北地震学报》
CSCD
1999年第4期407-410,416,共5页
Northwestern Seismological Journal
关键词
水位变化
地震前兆
趋势异常
地震预报
Water level change
Earthquake precursor
Trend anomaly
Ningbo
