| 功率谱用于计算不同尺度磁性体场源深度的分析 |
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| 引用本文： | 张先,赵丽.功率谱用于计算不同尺度磁性体场源深度的分析[J].物探与化探,2007,31(Z1):53-56. |
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| 作者姓名： | 张先 赵丽 |
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| 作者单位： | 中国地震局,地球物理勘探中心,河南,郑州,450002 |
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| 基金项目： | 国家发展与改革委员会攻关项目;中国地震局地球物理勘探中心科技论著项目 |
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| 摘 要： | 通过对北京地区航磁异常进行小波多尺度分解得到的细节异常和向上延拓得到的区域异常进行功率谱计算,对发现的问题进行分析。从理论模型试验及实际资料处理的分析中说明:功率谱用于计算水平尺度小于"窗口"的磁性体场源深度效果较好,而用于计算水平尺度大于"窗口"的区域构造的场源深度误差较大,并针对导致2种不同效果的原因进行了探讨。
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| 关 键 词： | 功率谱 不同尺度 场源深度 |
| 文章编号： | 1000-8918(2007)S0-0053-04 |
| 修稿时间： | 2007年4月27日 |
AN ANALYSIS OF THE POWER SPECTRUM FOR COMPUTING FIELD SOURCE DEPTHS OF MAGNETIC BODIES OF DIFFERENT SCALES |
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| ZHANG Xian,ZHAO Li.AN ANALYSIS OF THE POWER SPECTRUM FOR COMPUTING FIELD SOURCE DEPTHS OF MAGNETIC BODIES OF DIFFERENT SCALES[J].Geophysical and Geochemical Exploration,2007,31(Z1):53-56. |
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| Authors: | ZHANG Xian ZHAO Li |
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| Abstract: | The power spectra of detailed anomalies obtained by wavelet multi-scale separation of aeromagnetic data and regional anomalies obtained by continuation of aeromagnetic data in Beijing area were computed, and the problems found were analyzed.An analysis of the test on theoretic models and the processing of practical data shows that the effect is the best when the power spectrum is used to compute the field source depths of magnetic bodies whose horizontal scale is smaller than the "Window",and that the error is relatively large when the power spectrum is used to compute the field source depths of regional structures whose horizontal scale is larger than the "Window".The causes of the two different effects are discussed. |
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| Keywords: | power spectrum different scales field source depth |
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