永胜台对汶川8.0级地震的倾斜响应与异常分析

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英文篇名：Analyses on Tilt Responses and Anomalous for Wenchuan M8. 0 Earthquake at Yongsheng Station 中文刊名：地震研究 英文刊名：Journal of Seismological Research 作者：杨玲英 ; 张欢 ; 毛先进 ; 苏有锦 ; 杨正纲 英文作者：YANG Ling -ying ; ZHANG Huan ; MAO Xian-jin ; SU You-jin ; YANG Zheng-gang ; Earthquake Administration of Yunnan Province ; Sheshan Seismic Station ; Earthquake Administration of Shanghai Municipality 中文关键词：汶川地震 ; 水管倾斜观测 ; 同震响应 ; 震前异常 英文关键词：Wenchuan M8.0 earthquake ; water tilt observation ; coseismic response ; anomaly before earthquake 出版日期：2014-10-15 机构：云南省地震局;上海地震局佘山地震台; 年：2014 期：04 出版单位：地震研究

摘要

2008年汶川8.0级地震发生前,云南永胜水管倾斜测值北南向出现将近一年大幅度趋势南倾异常,东西向自2007年7月向西倾变化,且速率比以往快。在排除气压、降雨等干扰因素影响后,通过异常形态、持续时间、观测点所处构造,分析了该异常与汶川地震的关系,结果表明在强地震孕育阶段,永胜水管倾斜有长期趋势异常。
Before Wenchuan M8. 0 earthquake on M ay. 12,2008,the water-pipe tilt observation value in NS direction appeared a substantial anomalous trend of south tilt recorded by Yongsheng Station in Yunnan for nearly one year,while the observation value in EW direction changed to west tilt,and its rate was faster than ever before.After removing the pressure,rainfall and other interference factors,we analyzed the relationship between the water-pipe tilt observation value anomalies and the Wenchuan M8. 0 earthquake through the anomalous patterns,duration time and the tectonic where the observation points located,and concluded that there existed long-term anomalous trends for water-pipe tilt observation value at Yongsheng Station during the seismogenic processes of strong earthquakes.

引文

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