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地震 ›› 2016, Vol. 36 ›› Issue (3): 46-54.

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地震监测氡观测仪器校准新方法研究

任宏微1,2, 姚玉霞3, 黄仁桂4, 陈兰庆5, 王桂清6   

  1. 1.中国地震局地壳应力研究所(地壳动力学重点实验室), 北京 100085;
    2.中国地震局地球物理研究所, 北京 100081;
    3.甘肃省地震局平凉中心地震台, 甘肃 平凉 744000;
    4.江西地震局九江地震台, 江西 九江 332005;
    5.甘肃省地震局, 甘肃 兰州 730000;
    6.中国地震台网中心, 北京 100045
  • 收稿日期:2016-02-17 发布日期:2020-07-03
  • 通讯作者: 姚玉霞, 工程师, E-mail: yaoyuxia999888@163.com
  • 作者简介:任宏微(1984-), 女, 山东莱州人, 博士研究生, 助理研究员, 主要从事地震地下流体氡观测方法、氡前兆机理研究。
  • 基金资助:
    中国地震局地壳应力研究所中央级公益性科研院所基本科研业务专项(ZDJ2014-05);公益性行业科研专项(201408008); 中国地震局三结合项目(15280x)

A New Calibration Method of Emanometer in Earthquake Monitoring

REN Hong-wei1,2, YAO Yu-xia3, HUANG Ren-gui4, CHEN Lan-qing5, WANG Gui-qing6   

  1. 1. Key Laboratory of Crustal Dynamics, Institute of Crustal Dynamics, CEA, Beijing 100085 China;
    2. Institute of Geophysics, CEA, Beijing 100081 China;
    3. Pingliang Central earthquake Station, Gansu Earthquake Administration, Gansu Pingliang, 744000 China;
    4. Jiujiang Earthquake Station, Jiangxi Earthquake Administration, Jiangxi Jiujiang, 332005, China;
    5. Gansu Earthquake Administration, Gansu Lanzhou 730000, China;
    6. China Earthquake Networks Center,Beijing 100045, China
  • Received:2016-02-17 Published:2020-07-03

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摘要： 利用国际刻度参考装置AlphaGUARD测氡仪及水氡测量组件, 使用水中溶解氡(或豁免级氡气源), 开展代替目前氡气固体源校准方法实验。 对FD-125测氡仪标配的3个闪烁室(1#、 3#及5#)分别使用水中溶解氡和氡气固体源进行校准实验, 3个闪烁室的校准K值相对误差分别为5.06%, 1.92%及2.76%, 可以达到目前地震监测氡观测技术要求。 实验结果表明, 水中溶解氡代替氡气固体源校准, 可以解决目前氡气固体源校准中存在的运输困难、 维修技术要求高等问题, 是今后氡观测仪器校准技术的发展趋势。

关键词: 氡气固体源校准, 水中溶解氡校准, 闪烁室, FD-125测氡仪, AlphaGUARD测氡仪

Abstract: By using AlphaGUARD radon measurement instrument, the international calibration reference device, we carried out a dissolved radon calibration experiment to replace the general calibration by solid source of radon gas. The three scintillation chambers (1 #, 3 # and 5 #) of FD-125 emanometer are calibrated respectively, and then are compared with the results of using solid source of radon gas. The results show that the error of k value using “dissolved radon calibration” relative to using solid source of radon gas were respectively 5.06%, 1.92% and 2.76%. The above results indicate that the newly developed calibration method instead of traditional solid source of radon gas accords with the radon observation technology requirement in earthquake monitoring system, and can solve difficulty in transportation and high technical maintenance requirements in the calibration using solid source of radon gas. It is the trend of radon calibration technology development in the future.

Key words: FD-125 emanometer, AlphaGUARD emanometer, Scintillation chamber, Radon source calibration

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