| 四川四分量钻孔应变观测数据精度评价 |
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| 引用本文： | 周朝晖,张晓明,袁燕妮,伍永秀,林丽萍.四川四分量钻孔应变观测数据精度评价[J].地震地磁观测与研究,2019,40(6):118-124. |
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| 作者姓名： | 周朝晖 张晓明 袁燕妮 伍永秀 林丽萍 |
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| 作者单位： | 中国成都 610041 四川省地震局;中国四川 617061 攀枝花地震基准台 |
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| 基金项目： | 地球物理台网仪器设备更新升级项目 |
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| 摘 要： | 利用邱泽华等给出的观测数据和回归分析方法,计算钻孔应变仪四分量元件的相对标定系数,并根据偏差计算自检内精度等指标,对观测数据进行质量评价。选取2017年四川四分量钻孔应变观测台网记录资料,结合四分量钻孔应变仪观测特点,计算并分析应变观测仪相对标定自检内精度,客观评价观测数据精度,结果发现,2017年仁和台四分量钻孔应变数据各月及全年相对标定系数K_i最大,偏差s最小,自检内精度数值最小,表明该台钻孔应变观测数据精度最高。分析认为,相对标定自检内精度可如实反映台站记录资料的可信度,可以更好、更客观地评价台站四分量钻孔应变观测资料质量。
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| 关 键 词： | 自检内精度 相对标定系数 偏差 四分量钻孔应变观测 |
Accuracy evaluation of four component borehole strain observation data in Sichuan |
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| Zhou Zhaohui,Zhang Xiaoming,Yuan Yanni,Wu Yongxiu,Lin Liping.Accuracy evaluation of four component borehole strain observation data in Sichuan[J].Seismological and Geomagnetic Observation and Research,2019,40(6):118-124. |
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| Authors: | Zhou Zhaohui Zhang Xiaoming Yuan Yanni Wu Yongxiu Lin Liping |
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| Institution: | 1.Sichuan Earthquake Agency, Chengdu 610041, China;2.Panzhihua Seismic Station, Sichuan Province 617061, China |
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| Abstract: | Relative calibration coefficients of the four components of the borehole strain gauge can be calculated using the observation data and regression analysis method given by Qiu Zehua et al, and the quality evaluation of the observation data was carried out according to the internal accuracy and other indicators of the deviation calculation. We selected four component borehole strain data of observation stations in Sichuan in 2017, combining with the characteristics of four component borehole strain meter observation, calculate and analysis strain observation instrument self-checking calibration accuracy, to evaluation relatively objective precision of observation data. We found that benevolence and four component borehole strain monthly and yearly data of 2017, relative calibration coefficient Ki is maximum, and the deviation is minimum, and self-check inner accuracy numerical is minimum, which means that the station borehole strain data is the most precision one. It is concluded that the relative accuracy of the calibration self-test can accurately reflect the credibility of the record of the station, and also can evaluate the quality of the four-component borehole strain observation data of the station. |
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| Keywords: | the self-test accuracy relative calibration deviation four component bore hole strain observation |
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