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本文对1985年禄劝6.1级地震前35次小震和116次余震的尾波持续时间进行了统计分析。结果表明,主震发生后该区的尾波激发能力明显下降(2—3倍),暗示该区孕震体已基本瓦解,短期内再度发生强震的可能性不大。
In this paper, we analyzed the coda durations of 35 minor earthquakes and 116 aftershocks before the 1985 Luquan M8.1 earthquake. The results show that the excitation ability of coda waves in this area decreases obviously (2-3 times) after the main shock, suggesting that the seismogenic bodies in this area have been basically disintegrated and the possibility of strong earthquakes reappearing in a short time is unlikely.