| 张海玲,钟华.南半球强磁地区磁参数不明情况下磁力处理方法[J].矿产勘查,2012,3(4):490-496 |
| 南半球强磁地区磁参数不明情况下磁力处理方法 |
| Processing method of magnetic information under unknown magnetic parameters in southern hemisphere high intensity magnetic regions |
| 投稿时间：2012-03-09 |
| DOI： |
| 中文关键词: 南半球磁异常 感磁 剩磁 化极 场分离 |
| 英文关键词: southern hemisphere magnetic anomalies magnetic induction residual magnetic reduction-to-the pole magnetic source field separation |
| 基金项目: |
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| 摘要点击次数: 1993 |
| 全文下载次数: 1179 |
| 中文摘要: |
| 磁力勘探是寻找铁磁性矿产最重要的勘探方法,随着勘探市场的国际化,勘探地域已涉足一些地质、物探工作程度较低的近赤道的南半球国家。文章通过对斜磁化模型所产生的理论磁异常进行不同磁参数条件下的化极处理试验,发现了磁参数输入错误时所造成的化极异常变形现象及规律,并以南半球某岛的地磁异常为例,对具有强磁异常,剩余磁参数不明情况的磁力异常资料,首先采用不同磁参数进行化极试验,通过对化极处理效果进行分析,确定最佳处理效果；再利用趋势分析法分离,提取剩余异常,确定磁异常与矿体位置的对应关系。文中提到的11个钻孔,是进行资料处理及解释后的验证孔,其中10个钻孔见了铁矿体。 |
| 英文摘要: |
| Magnetic exploration is the most important method to find ferromagnetic mineral in mineral exploration, with the internationality of exploration market, exploration region has extended to some equatorial countries of the Southern Hemisphere, which geological and geophysical work is less. The reduction-to-the pole processing experiment is conducted on theory magnetic anomalies arising from oblique magnetized model by different magnetic parameters. The reduction-to-the pole abnormally deformation phenomenon and rule is found when the error magnetic parameter is input, and give an example on magnetic anomaly of one island in southern hemisphere that is strong magnetic anomaly with unknown remaining magnetic parameters. Firstly, by reduction-to-the pole test of different magnetic parameters, the optimal magnetic parameter is adopted by analysis of the reduction-to-the pole effect; secondly, in order to effectively determine the relationship between magnetic anomalies and ore body locations, the trend analysis method and outstanding local anomaly method is used . Finally, better geological results are obtained. Ten of eleven boreholes met ore bodies, which are verificated holes after data processing and interpretation. |
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