| 利用自洽方程计算法分析天山中段分量钻孔应变资料可靠性 |
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| 引用本文： | 斯琴,郭春生,颜龙,汪滢,关冬晓.利用自洽方程计算法分析天山中段分量钻孔应变资料可靠性[J].内陆地震,2019(2):121-128. |
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| 作者姓名： | 斯琴 郭春生 颜龙 汪滢 关冬晓 |
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| 作者单位： | 新疆维吾尔自治区地震局 |
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| 基金项目： | 新疆地震科学基金(201716);国家自然科学基金(41574088) |
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| 摘 要： | 根据天山中段8套四分量钻孔应变仪观测资料,利用自洽方程计算应变观测的信度,用信度指标检验数据的可靠性,从而进一步用自洽方程计算实际各元件灵敏度的相对大小,并用相对标定的结果,对观测数据进行校正。结果表明:①石场、巴仑台、巴音沟、雀儿沟、榆树沟和库米什台经过校正后,数据观测信度有了明显提升,其中石场和雀儿沟台的数据信度最高;②库米什台校正前数据观测信度较高,因个别“坏点”影响,校正后,观测信度反而下降;③小泉沟和新源台数据信度较低,存在从自洽到失洽的情况,分析认为这可能与系统自身存在问题有关,也有可能是前兆异常,有待进一步研究。
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| 关 键 词： | 分量钻孔应变 自洽方程 数据信度 相对标定 可靠性 |
RELIABILITY ANALYSIS OF COMPONENT BOREHOLE STRAIN DATA IN MIDDLE TIANSHAN MOUNTAIN USING SELF-CONSISTENT METHOD |
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| SI Qin,GUO Chun-sheng,YAN Long,WANG Ying,GUAN Dong-xiao.RELIABILITY ANALYSIS OF COMPONENT BOREHOLE STRAIN DATA IN MIDDLE TIANSHAN MOUNTAIN USING SELF-CONSISTENT METHOD[J].Inland Earthquake,2019(2):121-128. |
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| Authors: | SI Qin GUO Chun-sheng YAN Long WANG Ying GUAN Dong-xiao |
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| Institution: | (Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China) |
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| Abstract: | According to the observation data of eight sets of four-component borehole strain in the middle part of the Tianshan Mountains,the reliability of strain observations was calculated using self-consistent equation.This index was used to characterize the reliability of the data,and the relative magnitudes of actual element sensitivity were further calculated using self-consistent equations,and used the relative calibration results to correct the observation data.The results show that:①After calibration,the observation reliability of Shichang,Baluntai,Bayingou,Que’ergou,Yushugou and Kumishi station has been significantly improved.Among them,Shichang and Que’ergou station have the highest data reliability.②Before the calibration,the data of Kumish has higher observational reliability.Due to the impact of individual“bad spots”,after the correction,the observational confidence decreases.③The reliability of the data in Xiaoquangou and Xinyuan is relatively low,and there was a situation from self-consistency to failure.The analysis suggested that this may be related to the system’s own problems.It may also be a precursory anomaly and needs further study. |
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| Keywords: | Component borehole strain Self-consistent equation Observation reliability Relative calibration Reliability |
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