天水台井下地电综合观测系统及监测效能分析

doi:10.12196/j.issn.1000-3274.2023.02.002

地震 ›› 2023, Vol. 43 ›› Issue (2): 14-24.doi: 10.12196/j.issn.1000-3274.2023.02.002

天水台井下地电综合观测系统及监测效能分析

牛延平^1,2, 田野^1,2, 张远富^1,2, 周卫东^1,2

1.甘肃省地震局, 甘肃兰州 730000;
2.中国地震局兰州地震研究所, 甘肃兰州 730000

收稿日期:2022-11-23 修回日期:2023-02-14 发布日期:2023-07-05
作者简介:牛延平(1981-), 男, 甘肃通渭人, 高级工程师, 主要从事地震监测研究。
基金资助:
甘肃省科技计划项目(20YF8FA024)

The Deep-well Geo-electrical Synthesis Observation System of Tianshui Station and Its Monitoring Efficiency Analysis

NIU Yan-ping^1,2, TIAN Ye^1,2, ZHANG Yuan-fu^1,2, ZHOU Wei-dong^1,2

1. Gansu Earthquake Agency, Lanzhou 730000, China;
2. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China

Received:2022-11-23 Revised:2023-02-14 Published:2023-07-05

摘要/Abstract

摘要： 甘肃天水台井下地电综合观测系统于2010年改造建设完成, 设置了20个地电阻率测项分量、 18个地电场测项分量和6个地温测项分量, 涵盖目标测项、对比测项和实验测项三部分。本文详细介绍了该观测系统的装置建设和测项设置, 着重对井下地电阻率观测效能进行了分析, 结果表明地电阻率目标测项观测资料稳定、可靠, 能够抑制地面电磁干扰, 消除年变、风扰、降雨、灌溉等因素对观测的影响。观测数据在2013年芦山M7.0地震和岷县—漳县M6.6地震前均出现了明显的短临异常。

关键词: 井下地电综合观测, 测项设置, 目标测项, 观测效能

Abstract: The Deep-well geo-electrical synthesis observation system of Tianshui station was completed in 2010. There are 20 components of earth resistivity observation item, 18 components of geo-electric field item and 6 components of geothermal gradient item in deep-well. These observation items were classified into target, comparative studying and experiment. This paper introduces the observation system and analyzes the efficiency of geo-electrical resistivity observation. The results prove that the deep-well geo-electrical resistivity observation experiments not only produce reliable data but also inhibiting interferences of electromagnetic, annual change, wind disturbance, rainfall and irrigation at ground. The anomalies have been found before the 2013 Lushan M7.0 and the 2013 Minxian-Zhangxian M6.6 earthquakes in the observation data.

Key words: Deep-well geo-electrical synthesis observation, Set observation item, Objective observation items, Observation efficiency

中图分类号:

P315.7

牛延平, 田野, 张远富, 周卫东. 天水台井下地电综合观测系统及监测效能分析[J]. 地震, 2023, 43(2): 14-24.

NIU Yan-ping, TIAN Ye, ZHANG Yuan-fu, ZHOU Wei-dong. The Deep-well Geo-electrical Synthesis Observation System of Tianshui Station and Its Monitoring Efficiency Analysis[J]. EARTHQUAKE, 2023, 43(2): 14-24.

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天水台井下地电综合观测系统及监测效能分析

The Deep-well Geo-electrical Synthesis Observation System of Tianshui Station and Its Monitoring Efficiency Analysis

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