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本文在研究了龙陵地震的特征后指出:龙陵地震是发生在介质相对均匀的区域的一组共轭地震。其基本特征是:两次主震的震级基本相等;两次主震的破裂面基本正交,而与主压应力方向约成45°夹角;前后两次地震的旋性分别是右旋和左旋,即旋性正好相反。 研究前震的分布情况,表明震源区在震前确有一个膨胀过程。前震分布的范围与余震分布范围大体相当,且可根据前震范围估计主震的震级。 龙陵强余震的时间分布适合经验公式 T=n[0.1347+0.3579(n-1)(2n-1)/6]T是以天计的自第一主震起算的时间,n为余震组的序号。根据这一公式便可求得第n组余震发生的时间。
After studying the characteristics of the Longling earthquake, this paper points out that the Longling earthquake is a set of conjugate earthquakes occurring in a relatively homogeneous medium. Its basic characteristics are: the magnitudes of the two main shocks are basically the same; the rupture planes of the two main shocks are basically orthogonal and are at an angle of 45 ° with the direction of the principal compressive stress; the rotations of the two previous earthquakes are right-hand and right- Left-handed, that is, the opposite of rotation. Studying the distribution of pre-earthquake shows that there is an expansion process in the focal area before the earthquake. The range of the pre-earthquake distribution is roughly the same as that of aftershocks, and the magnitude of the main earthquake can be estimated based on the pre-earthquake range. The time distribution of strong aftershocks of Longling is suitable for the empirical formula T = n [0.1347 + 0.3579 (n-1) (2n-1) / 6] T is the time in days from the first main shock, Serial number. According to this formula can be obtained in the nth group of aftershocks occurred time.