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TEM拟地震解释中的反射系数确定

Determination of reflection coefficient in TEM imitated-seismic interpreting

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【作者】 刘继东

【Author】 LIU Ji-dong (Gansu Coal Field Geology Bureau, Lanzhou 73000,China)

【机构】 甘肃省煤田地质局 甘肃兰州730000

【摘要】 在反射波地震勘探中 ,能观测到输入大地中的地震波在介质的分界面上的反射 ,这些反射组成的时间序列就是地震记录 ,而记录上所显示的反射序列可以看作是地下介质的脉冲响应。TEM电磁波场源同样存在二次波和透射波 ,从电磁波和弹性波在介质中传播的相似性角度认识 ,存在二次场拟地震解释的条件。其中 ,对它们的反射系数函数的对比分析 ,是认识两者有机地联系的关键。本文就是基于上述理论 ,运用解释地震资料的方法解释电磁法资料。

【Abstract】 In reflective seismic exploration, the reflection of the waves from interfaces of media can be observed and recorded as time-related series, which compose the seismic records. The reflective series revealed by the records can be regarded as the pluse response of the underground media. Similar to the elastic wave field, TEM electromagnetic wave field has both reflection and transmission too. There is the condition of seismic interpreting for quadric field based on their similarity of transmitting in the media, and it is the key to understand the closely connect between electromagnetic wave and elastic wave for contrast analyses of the reflective modulus functions. In this paper, it is introduced how to apply the mentioned theory of interpreting seismic data to interpret electromagnetic data.

  • 【文献出处】 煤田地质与勘探 ,Coal Geology & Exploration , 编辑部邮箱 ,2004年06期
  • 【分类号】P631.325
  • 【被引频次】14
  • 【下载频次】153
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