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人们一般采用日(旬、月、年)均值分量图、矢量图以及滑动均值图等来分析地倾斜与地震的关系。我们利用地处沿海,受海潮影响的地倾斜资料的24小时整点值作矢量图,发现日变矢量图极有规律,并且在地震前有一定的异常表现。现结合宁波地震台的资料作一简要讨论。 宁波台位于宁波盆地的西北部,距海约16公里。台基是上侏罗统火山岩。岩性致密坚硬、整体性好。台站东南5公里处有一组新华夏系压性断裂,东西向压性断裂从台站北面20公里处通过。周围无人为干扰,是一个环境条
People generally use the day (month, month, year) mean component diagram, vector and sliding mean value map to analyze the relationship between tilt and the earthquake. Using the 24-hour whole-hour value of the slope data on the coastal and tide-affected land as a vector map, we found that the daily variation vector diagram is very regular and shows some anomalies before the earthquake. Now with the information of Ningbo Seismostation for a brief discussion. Ningbo station is located in the northwest of Ningbo basin, about 16 km from the sea. The base is Upper Jurassic volcanic rocks. Lithologic dense hard, good integrity. A group of Neo-Hsia-China-based pressure faults are located 5 kilometers southeast of the station. The east-west pressure fracture passes 20 kilometers north of the station. No one around the interference, is an environmental bar