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| 地震前地壳形变异常分布的非均匀性特征 | |
| 引用本文： | 牛安福,张雁滨,柯丽君,刘祖荫,郑文衡.地震前地壳形变异常分布的非均匀性特征[J].地震,1999,19(2):149-154. |
| 作者姓名： | 牛安福 张雁滨 柯丽君 刘祖荫 郑文衡 |
| 作者单位： | 1. 中国武昌,430071,中国地震局地震研究所 2. 中国昆明,650041,云南省地震局 3. 中国武昌,430074,华中理工大学 |
| 基金项目： | 地震科学联合基金,国家科技攻关项目 |
| 摘 要： | 利用Ｆ综合检验的理论，讨论了形变异常的定量化及检测准则。利用潮汐观测中的非潮汐形变讨论了大同和丽江地震前形变异常分布的非均匀性，并与地震活动的特征进行了对比。结果表明，震前１．５年左右，能检测出区域性的准同步形变异常，出现的异常空区可能是未来的地震危险区，且形变异常空区在震前应有强化或补偿现象。因而，在地震危险区的判定中首先面临的问题是地震孕育所处阶段的判定；在无法判别地震孕育阶段的情况下，形变异常台站周围和异常强度场中所出现的形变异常空区都是危险的。 |
| 关 键 词： | 地震活动性 异常强度定量化 异常非均匀分布性 |
ON THE HETEROGENEITY OF THE ANOMALY INTENSITY OF THE CRUSTAL DEFORMATION PRIOR TO EARTHQUAKES |
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| Niu Anfu,Zhang Yanbin,Ke Lijun,Liu Zuyin,Zheng Wenheng.ON THE HETEROGENEITY OF THE ANOMALY INTENSITY OF THE CRUSTAL DEFORMATION PRIOR TO EARTHQUAKES[J].Earthquake,1999,19(2):149-154. | |
| Authors: | Niu Anfu Zhang Yanbin Ke Lijun Liu Zuyin Zheng Wenheng |
| Abstract: | In this paper, the detection criterion and quantification of deformation anomaly intensity on the basis of the F detection theory have been discussed. We have applied these definitions to study the heterogeneity of anomalous deformation intensity before the Datong and Lijiang earthquakes by using the observed deformation data, and have also compared the research results with earthquake activity characteristics. It is demonstrated that the quasi synchronous deformation anomalies about 1.5 year before the earthquake in a region can be detected, and then the anomaly intensity should be increased in the former anomaly gap before earthquake occurrence. Therefore the authors consider that the key of earthquake prediction is to identify the stages of earthquake preparation because the precursors may occur in different forms during various preparation stages. |
| Keywords: | Earthquake activity Anomaly intensity Heterogeneous distribution of anomaly intensity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |