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邛海地倾斜观测系统的测量结果表明:面倾斜观测精度可达10~(-7)至10~(-8)弧度;观测面倾斜的变化反映了邛海及其周围地区的,以M≥5.0地震活动为特征的地壳应力积累和释放过程;中强地震的短临前兆与大地震的趋势性和突发性两种前兆特征相似。
测 The measurement results of Haitian tilt observation system show that the observation accuracy of surface tilt can reach 10 -7 (-7) to 10 -8 radian. The change of tilt of the observation surface reflects the area around Qionghai and its surroundings with M≥5.0 Earthquake activity is characterized by the accumulation and release of crustal stress. The short and temporary precursors of moderate-strong earthquakes are similar to the trend and sudden precursory features of large earthquakes.