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《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:

40

期数:

2017年01

页码:

82-87

栏目:

出版日期:

2017-03-20

文章信息/Info

Title:

Analysis of Tidal and Non-tidal Change of the Water Tube Tilt Deformation Data before Impending Earthquake in Yunnan

作者:

李智蓉¹; 白宝荣²; 付 虹¹

1.云南省地震局,云南 昆明 650224; 2.普洱市地震局,云南 普洱 665099

Author(s):

LI Zhirong¹; BAI Baorong²; FU Hong¹

1.Earthquake Administration of Yunnan Province,Kunming 650224,Yunnan,China2.Earthquake Administration of Puer Municipality,Puer 665099,Yunnan,China

关键词:

减组合滤波;  Nakai拟合;  水管倾斜;  短临异常

Keywords:

reducing combination filtering;  Nakai fitting;  water tube tilt;  short-term and imminent stages

分类号:

P315.63

DOI:

-

摘要:

利用减组合滤波方法对2008—2013年云南省内7次M≥5.5地震前3个月10个台站的水管倾斜观测资料进行处理,消除潮汐改正成分和零漂,探寻短临同步异常变化。结果表明,减组合滤波方法提取的高频成分,在震前存在同步异常,可尝试用于短临跟踪工作中; 利用“Nakai拟合模型”求解得到潮汐响应率和线性漂移速率在短临阶段均未表现出易识别的异常,其反映的信息尚需进一步挖掘。

Abstract:

Using the reducing combination filtering method,we processed the water tube tilt observation data recorded by 10 stations in Yunnan within 3 months before 7 times of M≥5.5 earthquakes since 2008,and eliminated the tidal correction and zero drift to look for the synchronous abnormal changes in the short-term and imminent stages.The results showed that after extracting the high frequency component by reducing combination filtering method,we found that the synchronous abnormal changes were widespread before earthquakes,which could be applied in short-term tracking.The tidal response rate and linear drift rate which were solved by Nakai fitting model did not show the easy identified anomalies in short-term and imminent stages,which reflecting information needs to be further explored.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2016-02-27
基金项目:星火计划项目“基于典型磁电、形变前兆异常识别的短临预测研究与应用”(XH13022)、云南省地震局传帮带项目“云南前兆观测资料及在地震预报中的应用”(C2-2014002)和大震短临跟踪项目——云南6级以上地震短临异常指标总结(2014JCYB04)联合资助.

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更新日期/Last Update: 2017-03-20