摘要
通过对长期、中短期以及短临前兆异常迁移速率的研究,发现长期、中短期、短临前兆异常分别以每年10、100、1000km的量级向震中迁移。异常迁移速率不是线性增加,而为非线性递增。从理论上对前兆异常迁移性的存在与迁移速率的非线性变化进行了分析。这对不同时期的前兆异常判断以及地震的预测具有重要意义。
The migration velocities of the long-term, medium-short-term, short-term and imminent precursory anomalies are studied in this paper. The results show that the precursory anomalies move to the epicenter with the magnitude 10, 100 or 1 000 km per year. The anomaly migration velocity does not increase linearly but non linearly. We analyze theoretically the existence of precursor anomaly migration and the nonlinear variation of migration velocity. This plays an important role in judgement of precursor anomaly of different term and earthquake prediction.
出处
《地震》
CSCD
北大核心
1996年第4期372-376,共5页
Earthquake
