| 小极距井下地电阻率观测数据质量浅析 |
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| 引用本文： | 王晓,叶青,余丹,陶志刚,范晔,刘高川.小极距井下地电阻率观测数据质量浅析[J].地震地磁观测与研究,2022,43(2):38-45. |
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| 作者姓名： | 王晓 叶青 余丹 陶志刚 范晔 刘高川 |
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| 作者单位： | 中国北京 100045 中国地震台网中心 |
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| 基金项目： | 北京市自然科学基金;井下地电阻率观测效能评估项目;冬奥会保障晋冀蒙监测能力提升项目 |
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| 摘 要： | 为加强2022年北京冬奥会举办地区的震情保障工作，2019—2020年，依托原有地电台网，建设平谷、通州、阳原、大同、代县、临汾、宝昌、和林格尔等8个小极距井下地电阻率观测站（点），目前均运行良好，与同台地表大极距地电观测相比，观测数据精度提高。选取2021年9—11月井下地电阻率观测站数据记录，就相对均方差、日精度、月精度、月离散度、变化幅度等指标，分析小极距井下地电阻率观测数据质量。结果表明，8个井下地电阻率观测站（点）运行稳定，观测数据精度较高，具备一定映震效能，可为冬奥会举办区域及周边地区的震情跟踪有效服务。
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| 关 键 词： | 小极距井下地电阻率观测 数据质量 北京冬奥会 |
Preliminary analysis on the quality of short-electrode spacing well geo-electrical resistivity observation data |
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| WANG Xiao,YE Qing,YU Dan,TAO Zhigang,FAN Ye,LIU Gaochuan.Preliminary analysis on the quality of short-electrode spacing well geo-electrical resistivity observation data[J].Seismological and Geomagnetic Observation and Research,2022,43(2):38-45. |
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| Authors: | WANG Xiao YE Qing YU Dan TAO Zhigang FAN Ye LIU Gaochuan |
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| Institution: | China Earthquake Networks Center, Beijing 100045, China |
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| Abstract: | In order to ensure the earthquake protection for the 2022 Beijing Winter Olympics, relying on the existing local electricity networks, 8 short-electrode spacing well geo-electrical resistivity observation stations including Pinggu, Tongzhou, Yangyuan, Datong, Daixian, Linfen, Baochang, and Horinger have been built from 2019 to 2020. At present, the 8 observation stations are running well. Compared with the observations with large electrode spacing at the same station, the observation accuracy is greatly improved. In order to discuss the observation quality of shortelectrode spacing well resistivity observation in detail, this paper systematically analyzes various indicators of the observation data from September to November in 2021 including the relative mean square error, daily accuracy, monthly accuracy, monthly dispersion, and variation range. The results show that the data of all well geo-electrical resistivity observation stations have stable operation condition, high accuracy, and a certain seismic reflection effect, which can effectively serve the earthquake situation tracking in the Winter Olympics area and its surrounding areas. |
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| Keywords: | short-electrode spacing well geo-electrical resistivity data quality Beijing Winter Olympics |
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