| 摘要: |
| 2012年2月2日辽宁营口发生了M4.3和M4.1地震。震前距震中468km的河北省黄骅井水位出现了显著的短临下降异常变化，异常过程演化与震级较小的营口地震序列发展具有完整的可对比性。本文从地质、构造、震源机制等方面，分析判断该异常与构造活动应有一定的相关性，是一次显著的远场水位短临异常。 |
| 关键词: 黄骅井 营口地震 构造活动 水位 短临异常 |
| DOI： |
| 分类号: |
| 基金项目:河北省科技支撑项目:河北省重点地区壳幔结构及地震监测预报关键技术研究(13275407D)资助 |
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| Significant short-term anomaly of water level in far-field |
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Zhang Suxin, Zhang Ziguang, Sheng Yanrui, Gong Meng
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Earthquake Administration of Hebei Province，Shijiazhuang 050021，China
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| Abstract: |
| The Yingkou M4. 3 and M4. 1 earthquakes in Liaoning Province occurred on February 2，2012． Before the earthquake，the water level of Huanghua well in Hebei Province with the epicenter distance of 468km had a significant short-term decreasing anomaly． The abnormal process and Yingkou earthquake sequence of smaller magnitude make a complete comparison． The paper analyzes the anomaly phenomenon in terms of tectonic structure，dynamics environment and focal mechanism． The result shows that there is a certain correlation between tectonic activity and the anomaly，which can be taken as a significant short-term anomaly in far-field． |
| Key words: Huanghua well, Yingkou earthquake, Tectonic activity, The water level, Short-term anomaly |
