| 河北怀来地震台体应变异常与河北张北M6.2地震 |
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| 引用本文： | 李海孝,宋晓冰,张常慧,李毓萍.河北怀来地震台体应变异常与河北张北M6.2地震[J].山西地震,2005(2):8-10. |
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| 作者姓名： | 李海孝 宋晓冰 张常慧 李毓萍 |
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| 作者单位： | 河北省地震局怀来地震台,河北,怀来,075400 |
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| 摘 要： | 介绍了河北怀来地震台体应变仪器概况及观测资料的质量，以原始观测资料为基础，分析了异常图形和经Nakai拟合分析方法处理的震前异常特征．总结了1998年河北张北M6．2地震的体应变异常的映震效果，指出，体应变观测连续多次出现脉冲、阶变、应变固体潮畸变等异常可作为地震短临预测的指标。
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| 关 键 词： | 体应变 映震异常 震源力学 同震阶变 |
| 文章编号： | 1000-6265(2005)02-0008-03 |
Body Strain Anomaly at Huailai Seismological Station,Hebei,and Zhangbei Earthquake of M6.2,Hebei |
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| LI Hai-xiao,SONG Xiao-bing,ZHANG Chang-hui,LI Yu-ping.Body Strain Anomaly at Huailai Seismological Station,Hebei,and Zhangbei Earthquake of M6.2,Hebei[J].Earthquake Research in Shanxi,2005(2):8-10. |
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| Authors: | LI Hai-xiao SONG Xiao-bing ZHANG Chang-hui LI Yu-ping |
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| Abstract: | In this paper,the body strain meters and the quality of data observed with those meters in Huailai Seismological Station,Hebei are introduced.Based on raw data,the raw anomaly and the characteristic precursor anomaly got from data processing by using Nakai fitting are analyzed.The body strain anomaly to reflect earthquake the 1989 Zhangbei earthquake of M6.2,Hebei,is summed up.It is point out that the pulses,step changes and distortion of the Earth tide,appeared many times in a continuous body strain observation,can be taken as indexes for impending earthquake prediction. |
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| Keywords: | Body strain Relfecting earthquake anomaly Source mechanism Coseismic step change |
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