| 火山地区二维自然电位异常反演 |
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| 引用本文： | 张贵宾 Aubert,M.火山地区二维自然电位异常反演[J].地球物理学报,1996,39(6):835-844. |
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| 作者姓名： | 张贵宾 Aubert M |
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| 作者单位： | 1. 中国地质大学应用地球物理系, 北京 100083;
2. 法国克莱蒙第二大学地球物理观测台, 法国 63000;
3. 中国地质大学材料科学系, 北京 100083 |
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| 摘 要： | 将线性反演理论与正则化法相结合，提出一个火山地区二维自然电位（ＳＰ）异常反演方法．地下岩浆活动（对流体）是引起自电异常的极化源，反演的目的是计算地下视极化强度分布和极化源中心位置．可以通过用已知的各种资料改变地下极化源区域（简称源区）的方式来进行多次反演，以便获得一个比较合理的地下视极化强度分布模型．最后，分别给出意大利和墨西哥的两个火山地区的自然电位异常分析结果．
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| 关 键 词： | 火山地区 自然电位异常 视极化强度 |
| 收稿时间： | 1995-08-07 |
INVERSION OF A TWO-DIMENSIONAL SELF-POTENTIAL ANOMALY IN VOLCANIC AREAS |
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| ZHANG GUI-BIN,MAURICE AUBERT,QI JIAN-LING.INVERSION OF A TWO-DIMENSIONAL SELF-POTENTIAL ANOMALY IN VOLCANIC AREAS[J].Chinese Journal of Geophysics,1996,39(6):835-844. |
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| Authors: | ZHANG GUI-BIN MAURICE AUBERT QI JIAN-LING |
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| Institution: | 1. Department of Geophysicr, China Uniutrsity of Georciences, Beijing 100083, China;
2. Observatory of Geophysics, University of Clermont II and CNRS, Clermont 63000, France;
3. Department of Material Science, China University of Gtorcitnces, Beijing 100083, China |
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| Abstract: | An inverse method for two-dimensional self-potential(SP)anomaly in volcanic areas has been presented,based on linear inverse theory combined with the regularization method.Subsurface magmatic activity drives a convective cell which is regarded as the source of polarization responsible for SP anomaly.The objective of this inversion is to calculate the apparent polarization of every parallelepiped comprising the source region.When combined with the known geological information,iterative SP inversions result in a more reasonable model by modifying the source region.Finally,results of the analysis of two real SP data are given,SP anomaly on Fuego de Colima volcano in Mexico and SP anomaly on Etna volcano in Italy.The results show that SP prospecting with this method is an effective method for mapping the convective hydrothermal circulation. |
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| Keywords: | Volcanic areas Self-potential anomaly Polarization |
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