地学前缘 ›› 2009, Vol. 16 ›› Issue (2): 369-377.

• 论文 • 上一篇    下一篇

环境同位素及其示踪技术在地震预测研究中的应用前景

  

  1. 1中国地震局 地下流体动力学实验室, 北京 100085
    2中国地震局 地壳应力研究所, 北京 100085
    3中国地质大学(北京) 水资源与环境学院, 北京 100083
    4中国地震台网中心, 北京 100045

  • 出版日期:2009-03-02 发布日期:2009-03-02
  • 通信作者: 任宏微(1984—),女,硕士研究生,主要从事地震地球化学研究。E-mail: renhongweiwei@163.com
  • 作者简介:刘耀炜(1957—),男,研究员,主要从事地震流体动力学等研究。E-mail: liuyw@gssb.gov.cn
  • 基金资助:

    “十一五”国家科技支撑计划项目(2006BAC01B02-03);国家科技支撑项目“汶川地震断裂带科学深钻——断裂带深部流体行为及其在地震过程中的作用”

Application of environmental isotopes and tracer techniques to seismic subsurface fluids.

  1. 1 Laboratory of Ground Fluid Dynamics, China Earthquake Administration, Beijing 100085, China
    2 Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China
    3 School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China
    4 China Earthquake Network Center, Beijing 100045, China

  • Online:2009-03-02 Published:2009-03-02

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摘要：

随着新的观测技术和理论的快速发展,环境同位素示踪技术在分析与地震孕育、发生有关的地下水动态信息中有可能发挥重要作用。简单介绍了稳定同位素2H、18O以及放射性同位素3H、14C的特征与示踪技术,详细阐述前人应用环境同位素在地下水活动规律中所开展的研究,包括地下水的补给来源、地下热水的循环深度、水岩相互作用、地下水的年龄等,并重点分析了这种示踪技术在研究地下水对构造活动发生和对应力应变响应等方面的应用。积极推进环境同位素示踪技术的应用,对地下流体地震前兆信息的评估、地震活动性强度的判定、流体在孕震过程中作用的探讨,以及井孔映震效能的评价等方面的研究具有重要的意义。

关键词: 环境同位素;示踪;地下流体;地震

Abstract:

In recent years, with the progress of new observation techniques and related theories, the tracing technique of environmental isotopes can be used to identify the dynamic information of groundwater, which is associated with the earthquake gestation and occurrence In this study, the characteristics of stable isotopes including 2H, 18O as well as radioactive isotopes such as 3H, 14C, and the tracing techniques are investigated Especially, with the environmental isotopes, the activity rules of groundwater including the groundwater recharge,circulation depth of geothermal water, waterrock interaction and groundwater age are discussed in depth The study was carried out to analyze the effects of the groundwater on its response to the stressstrain changes and to the tectonic activities It is worthy to mention that the tracing technique of environmental isotopes can be applied to identifying the information of seismic subsurface fluid, determining the intensity of seismicity, discussing the role of fluid in earthquake gestation, and estimating the effect of earthquake reflection in borehole

Key words:

environmental isotopes; tracing; subsurface fluid; earthquake

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