| 瞬变电磁法数据提取纯异常方法技术 |
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| 引用本文： | 雷达.瞬变电磁法数据提取纯异常方法技术[J].物探与化探,2004,28(4):320-322. |
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| 作者姓名： | 雷达 |
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| 作者单位： | 中国地质大学,北京,100083;中国地质科学院,物化探所,勘查地球物理开放实验室,河北,廊坊,065000 |
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| 摘 要： | 在瞬变电磁法数据处理中,借鉴小波分析的"自适应性"和"数学显微镜性质"的特点,提出了特殊的TEM数据二维小波变换处理方法和流程,并编制了可视化处理软件,其核心是利用计算出的异常Lipschiz指数α的正负变化区分正常场和异常场,从而有效地从TEM数据中提取纯异常。选取某铜镍矿上实测的TEM资料进行了处理,获得了令人满意的效果。
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| 关 键 词： | 瞬变电磁法 小波变换 数据处理 |
| 文章编号： | 1000-8918(2004)04-0320-03 |
| 收稿时间： | 2004-03-14 |
THE TECHNIQUE FOR EXTRACTING PURE ANOMALIES FROM THE TRANSIENT ELECTROMAGNETIC DATA |
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| LEI Da.THE TECHNIQUE FOR EXTRACTING PURE ANOMALIES FROM THE TRANSIENT ELECTROMAGNETIC DATA[J].Geophysical and Geochemical Exploration,2004,28(4):320-322. |
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| Authors: | LEI Da |
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| Abstract: | Based on "self-adaptivity" and "mathematical microscope nature" of wavelet analysis in data-processing of the transient electromagnetic method, this paper has put forward the processing method and flow chart for two-dimensional wavelet transform of special TEM data, and compiled visualized processing software. The core of this technique lies in calculating the positive and negative variations of Lipschiz indexαfor distinguishing the normal field from the anomalous field so as to effectively extract pure anomalies from the TEM data. The processing of the measured TEM data from a Cu-Ni deposit has yielded satisfactory result. |
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| Keywords: | transient electromagnetic method wavelet transform data processing |
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