| 瞬变电磁法资料的联合时-频分析初探 |
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| 引用本文： | 陈明生, 李正斌, 阎述. 瞬变电磁法资料的联合时-频分析初探[J]. 煤田地质与勘探, 1999, 27(3): 55-57. |
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| 作者姓名： | 陈明生 李正斌 阎述 |
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| 作者单位： | 1. 煤炭科学研究总院西安分院 710054; |
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| 摘 要： | 依据联合时-频分析原理,研究了几个地电模型瞬态响应信号的时-频分布特征,说明瞬变场信号的时频分布强度在随深度减弱的总趋势下,受电阻率影响有明显变化:电阻率低分布强度大;电阻率高分布强度小。据此建立起瞬变场信号的联合时-频分布与地电结构的关系,可以更好地解释瞬变场资料。
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| 关 键 词： | 瞬变电磁场 时-频分析 解 |
| 收稿时间： | 1999-02-26 |
| 修稿时间： | 1999-02-26 |
PRELIMINARY STUDY ON JOINT TIME-FREQUENCY ANALYSISOF TRANSIENT ELECTROMAGNETIC FIELDS |
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| Chen Mingsheng, Li Zhengbin, Yan Shu. PRELIMINARY STUDY ON JOINT TIMEFREQUENCY ANALYSIS OF TRANSIENT ELECTROMAGNETIC FIELDS[J]. COAL GEOLOGY & EXPLORATION, 1999, 27(3): 55-57. |
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| Authors: | Chen Mingsheng Li Zhengbin Yan Shu |
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| Affiliation: | 1. Xi'an Branch of CCRI;2. Xi'an Jiaotong University |
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| Abstract: | On the base of the introduction of joint timefrequency analysis principle,the behaviors of timefrequency distribution on transient response signals of several geoelectric models are studied.It is demonstrated that under the general trend of the timefrequency distribution strength weakened with the depth,the strength is changed obviously by the effect of resistivity,the strength is larger when the resistivity is lower and vice versa. Thus,the relationship between the joint timefrequency distribution of transient fields and geoelectric structure is established and the transient field data could be interpreted better. |
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| Keywords: | transient electromagnetic field interpretation timefrequency analysis |
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