滇黔地区钻孔应变观测记震能力研究

Research on the earthquake responding ability of borehole strain observation in Yunnan-Guizhou region,China

使用2008～2011年 MW 6．0以上地震目录资料，统计滇黔地区贵阳、昭通、永胜、腾冲和丽江5个地震台的钻孔应变观测资料记录同震效应的情况，进行记震能力统计分析，给出了各台站钻孔应变观测的记震响应区域及记震能力图。根据地质构造及历史地震活动情况，对各观测台站记震能力进行了对比分析。结果表明，井孔位于稳定块体及历史地震活动少的台站记震能力强，记录的同震阶变现象少；反之则相反。通过记震能力分析可知，记震能力强的台站更有可能记录到更广范围的地震前兆异常现象。

Based on the 2008~2011 MW≥6.0 earthquake catalog data,coseismic effects recorded by Guiyang ,Zhaotong ,Tengchong ,Yongsheng ,Lijiang borehole strain observation＆amp;nbsp;stations are analyzed statistically.Earthquake recording ability and responding region are al-so analyzed.Results show that stations （observation boreholes）located in stable geological block where earthquake rarely happened in history have strong earthquake recording ability, recording less coseismic order change;and vice versa.Stations with strong earthquake re-cording ability can record abnormal earthquake precursors in broader regions.