| 垂直地电场观测新技术的数据研究——基于坪城观测点的分析 |
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| 引用本文： | 周卫东,牛延平,叶青,田野,苏小芸,王娟.垂直地电场观测新技术的数据研究——基于坪城观测点的分析[J].西北地震学报,2020,42(4):914-918. |
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| 作者姓名： | 周卫东 牛延平 叶青 田野 苏小芸 王娟 |
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| 作者单位： | 兰州地球物理国家野外科学观测研究站, 甘肃 兰州 730000;中国地震台网中心, 北京 100045 |
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| 基金项目： | 甘肃省地震局地震科技发展基金（2019Y03）；国家自然科学基金（A413740808）；中国地震局专项（全国地球物理台网数据跟踪分析与产出） |
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| 摘 要： | 结合同台观测的水平地电场数据,研究坪城垂直地电场观测数据,结果表明:(1)采用固体不极化电极进行垂直地电场观测,同一极距的观测结果基本一致,而铅板电极与固体不极化电极之间存在较大的电位差;(2)垂直地电场日变化形态清晰,长极距测道(A1C1、A2C1和A3C1测道)日变幅为5.85 mV/km左右,短极距(B1C1、B2C1和B3C1测道)日变幅为10.02 mV/km左右;(3)垂直向观测的地电场日变化优势周期在12 h和24 h。
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| 关 键 词： | 垂直地电场 水平地电场 坪城 电极 |
| 收稿时间： | 2019/12/18 0:00:00 |
Observation Data Analysis of Vertical Geoelectric Field with New Technology: A Case Study Based on Data from Pingcheng Station |
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| ZHOU Weidong,NIU Yanping,YE Qing,TIAN Ye,SU Xiaoyun,WANG Juan.Observation Data Analysis of Vertical Geoelectric Field with New Technology: A Case Study Based on Data from Pingcheng Station[J].Northwestern Seismological Journal,2020,42(4):914-918. |
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| Authors: | ZHOU Weidong NIU Yanping YE Qing TIAN Ye SU Xiaoyun WANG Juan |
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| Institution: | Lanzhou National Geophysical Observatory, Lanzhou 730000, Gansu, China;China Earthquake Network Center, Beijing 100045, China |
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| Abstract: | The data of the horizontal and vertical geoelectric fields at Pingcheng Station were analyzed. Results showed that (1) the observation data of the vertical geoelectric field with solid nonpolarized electrodes are basically consistent, but a large potential difference is found between a lead electrode and a solid nonpolarized electrode. (2) The vertical geoelectric field data display a strong diurnal variation. The diurnal amplitude variation in A1C1, A2C1, and A3C1 channels is about 5.85 mV/km, whereas the diurnal amplitude variation in B1C1, B2C1, and B3C1 channels is about 10.02 mV/km. (3) The vertical geoelectric field has an obvious diurnal variation with dominant frequencies of 12 and 24 h. |
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| Keywords: | vertical geoelectric field horizontal geoelectric field Pingcheng electrode |
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