2014年云南鲁甸M_S6.5地震异常及预测
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摘要
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。
Analyzing the remarkable precursory anomalies in the process of seismic tracking before Yunnan Ludian MS6. 5 earthquake in 2014,we considered that the main characteristic of earthquake activity anomaly before the earthquake was that the quiet of M ≥6. 5 earthquakes for a long time,the cluster activities of M ≥6. 0 earthquakes and the high value of monthly frequency of M ≥3. 0 earthquakes in Yunnan province. The main basis of making the judgment that there existed M ≥6. 0 earthquake in Northeastern Yunnan region are the prosodic features of M ≥5. 0 earthquakes in Northeastern Yunnan region, the earthquake activities of M3. 0 ~ 4. 0 earthquakes increased notably since 2008 and some high water level anomalies in Northeastern Yunnan region since2014. In the process of the several earthquakes preparation at the same time,it is difficult to make the judgment whose risk region will be the first to occur the earthquake. However there appeared newprecursory anomalies before each earthquake,which can help us to identify the newearthquake in the occurrence of grouped earthquakes in succession. The monthly frequency anomaly of M ≥3. 0 earthquakes and the increasing of sudden change of precursory abnormity items made good effort in the time prediction of Ludian MS6. 5 earthquake in the short-term period.
引文
陈立德,付虹.2003.地震预报基础与实践[M].北京:地震出版社,208-210,262.
    陈立德,龙晓帆,张喜玲,等.1997.丽江7.0级地震预报判据及地震学主要异常[J].地震,(4):340-348.
    陈立德,罗平.1992.澜沧7.6级地震前兆异常的综合特征(一)中期异常及其综合特征[J].地震,(4):18-27.
    陈立德,罗平.1997.1995年7月12日孟连中缅边界7.3级地震短临预报及前兆异常特征(1)[J].地震研究,20(2):151-156.
    付虹,陈立德,罗平,等.1997.1995年7月12日云南中缅边界孟连7.3级地震中短临预报及前兆特征(2)[J].地震研究,20(3)249-257.
    付虹,王炜、王世芹,等.2002.地震活动因子A值在川滇地区MS≥6地震中的应用[J].内陆地震,16(3):205-211.
    付虹,赵小艳.2013.汶川MS8.0地震前云南地区显著前兆观测异常分析[J].地震学报,35(4):477-484.
    刘耀炜,陆明勇,付虹,等.2010.地下流体动态信息提取与强震预测技术研究[J].北京:地震出版社,39-40.
    马瑾,郭彦双.2014.失稳前断层加速协同化的实验室证据和地震实例[J].地震地质,36(3):547-561.
    石绍先,付虹,沈斌,等.1991.1988年澜沧耿马大震的预报和再认识[J].西北地震学报,13(1):35-40.
    张国民,张晓东,吴荣辉,等.2005.地震预报回顾与展望[J].国际地震动态,(5):39-53.
    ①云南省地震局.2014.云南省2014年年中地震趋势报告.
    ①云南省地震局.2003.云南省2003年度地震趋势研究报告.

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