一次显著的远场水位短临异常  

Significant short-term anomaly of water level in far-field

作　　者：张素欣[1] 张子广[1] 盛艳蕊[1] 宫猛[1] 

机构地区：[1]河北省地震局,石家庄市槐中路262号050021

出　　处：《中国地震》2013年第3期386-392,共7页Earthquake Research in China

基　　金：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

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。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.

关 键 词：黄骅井 营口地震 构造活动 水位 短临异常 

分 类 号：P315[天文地球—地震学]