论文部分内容阅读
通过分析2014年云南鲁甸MS6.5地震前震情跟踪过程中的显著异常,认为云南境内M≥6.5地震的长时间平静、M≥6地震的丛集活动以及M≥3地震月频次高值是震前云南地区地震活动异常的显著特征;滇东北地区M≥5地震活动的韵律特征、2008年后3、4级地震活动显著增强以及2014年以来滇东北地区的高水位异常是判定滇东北地区存在M≥6地震的主要依据。在多个地震同时孕育的过程中,对判定哪个危险区先发震是困难的,但每次地震都有新的前兆异常出现,为成组地震连发过程中,新地震的识别提供了依据。云南地区3级地震月频次异常和前兆突变异常增多是鲁甸MS6.5地震短期阶段最显著的异常特征。
By analyzing the significant anomalies in the earthquake tracing process before the MS6.5 Yunnan Ludumen earthquake in 2014, it is considered that the long-term M≥6.5 earthquake in Yunnan is long-term and the clustering of M≥6 earthquakes and the monthly maximum frequency of M≥3 earthquakes are earthquake The remarkable features of anomalous seismic activity in Yunnan before; the rhythmic characteristics of M≥5 seismic activity in northeastern Yunnan; the seismic activity of grade 3 and grade 4 after 2008 is significantly enhanced; and the high water level anomalies in northeastern Yunnan since 2014 are the determinations of the existence of northeastern Yunnan The main basis of M≥6 earthquakes. In the process of multiple simultaneous earthquakes, it is difficult to determine which earthquake-prone area first occurred. However, new precursory anomalies occur in every earthquake, which provides a basis for the identification of new earthquakes during the event of group earthquakes . The monthly frequency anomalies of M = 3 Earthquake in Yunnan Province and the anomalous increase of precursor mutations are the most notable anomalous features in the short period of the Ludian Ms6.5 earthquake.