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本文利用昆明台重力固体潮观测资料,对云南省内几个中强地震前昆明重力场的变化特征进行了分析研究。研究表明,震前昆明重力场的变化有以下特征:1.震前重力场均有不同程度的反映和表现。2.重力场的各种异常均以减小为主。3,一般来说,重力场的异常随地震的强度加大、频度增高而变大。4.重力场的异常具有复杂性、多样性。文中对重力场的变化进行了初步的分析讨论。并对加强重力工作,做好分析预报提出了看法和认识。
In this paper, Kunming station gravity tide observations, Kunming, Yunnan Province before a few strong earthquake changes in the characteristics of the gravity field were analyzed. The research shows that the changes of the Kunming gravitational field before the earthquake have the following characteristics: 1. The gravitational field before the earthquake all has different degrees of reflection and performance. 2. All kinds of gravity anomalies are reduced mainly. 3, in general, the anomaly of gravity field increases with the intensity of the earthquake, the frequency increases and becomes larger. Abnormal gravity field has the complexity and diversity. In this paper, the change of gravity field is analyzed and discussed. And put forward their opinions and understanding on strengthening the gravity work and doing a good job of analyzing and forecasting.