| 基于欧拉反褶积方法的航磁三分量应用研究 |
| |
| 引用本文： | 孙昂,郭华,田明阳,张爽,管彦武,吴贺宇.基于欧拉反褶积方法的航磁三分量应用研究[J].地球物理学报,2017,60(11):4491-4505. |
| |
| 作者姓名： | 孙昂 郭华 田明阳 张爽 管彦武 吴贺宇 |
| |
| 作者单位： | 1. 吉林大学地球科学学院, 长春 130061;2. 中国国土资源航空物探遥感中心, 北京 100083;3. 吉林大学地球探测科学与技术学院, 长春 130026 |
| |
| 基金项目： | 国家高技术研究发展（863）计划（2013AA063901）资助. |
| |
| 摘 要： | 在中国北部某地区首次开展了航磁三分量矢量飞行测量.本次测量是国内第一次直接测量航磁异常三分量Z_a、H_(ax)、H_(ay)数据,即文中提到的垂直分量V、北分量N、东分量E.由于三分量磁测数据具有矢量空间性,因而凭借其全空间矢量,在反演过程中可以更直接地发挥指向性作用.更为丰富的测量资料参与反演,所得到的最终结果为构造解释提供了更有力的约束,从而有助于减少地质解释过程中的多解性,提升解释结果的可靠性.本文以模型试验为切入点,首先进行三个分量各自的欧拉反褶积处理模型试验,以模型试验结果总结了不同的分量经反演后各自对理论模型边界刻画的特点.而后依据以上特点,将三个分量各自的反演结果进行叠加.与总场的反演结果相比,三个分量反演的叠加结果改善了模型体边界的识别效果,获得了更为准确的模型体位置信息.在总结了模型试验相关规律的基础之上,按照类似步骤分别对实测航磁三分量数据进行了欧拉反褶积处理,再将三个分量实测数据各自的反演结果进行叠加,以叠加后的结果进行构造解释.利用不同分量各自的反演特点,综合发挥多分量的资料优势,最终以三分量反演的叠加结果为依据,有效地识别了区内断裂,更加准确地刻画出断裂的形迹位置,揭示了不同性质断裂的世代关系,显示了良好的应用效果.
|
| 关 键 词： | 航磁三分量 欧拉反褶积法 构造解释 |
| 收稿时间： | 2017-05-03 |
Application of aeromagnetic three-component survey based on the Euler deconvolution method |
| |
| SUN Ang,GUO Hua,TIAN Ming-Yang,ZHANG Shuang,GUAN Yan-Wu,WU He-Yu.Application of aeromagnetic three-component survey based on the Euler deconvolution method[J].Chinese Journal of Geophysics,2017,60(11):4491-4505. |
| |
| Authors: | SUN Ang GUO Hua TIAN Ming-Yang ZHANG Shuang GUAN Yan-Wu WU He-Yu |
| |
| Institution: | 1. College of Earth Sciences, Jilin University, Changchun 130061, China;2. China Aero Geophysical Survey & Remote Sensing Center for Land & Resources, Beijing 100083, China;3. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China |
| |
| Abstract: | We have conducted a three-component aeromagnetic survey for the first time, over an area in northern China, obtaining data of Za, Hax and Hay which are defined as vertical component (V), north component (N) and east (E) in this paper. Due to the vector space feature of three-component data, it can play a more direct role on the basis of full space vectors in the inversion process. Because of the abundance of data involved in inversion process, the final results provide stronger constraints in the tectonic interpretation which facilitate to reduce the multiplicity of solutions in geological interpretation and improve the reliability of interpretation. This paper starts with a model test. First, three-component aeromagnetic data is processed by Euler deconvolution. According to results of the model test, the characteristics of model boundaries for each component are summarized. Then, the three-component inversion results are superposed based on these characterisitcs. Comparing with inversion results of ΔT, superposed inversion of three-component data can improve identification of the model boundary, and provide more accurate information of the model body position. On the basis of summarizing the relevant rules of above model test, the measured aeromagnetic three-component data is processed by Euler deconvolution in similar procedures. After that, we interpret faults through superposing the respective inversion results of the measured three-component data.Finally, using the respective inversion characteristics of different components and taking full advantage of multi-component data, superposed results of three-component data improve the efficiency and accuracy of identifying faults and depicting traces, and reveal age relationships of different faults at the same time. Thus, this paper shows the good application value of aeromagnetic three-component survey based on the Euler deconvolution method. |
| |
| Keywords: | Aeromagnetic three-component Euler deconvolution method Tectonic interpretation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
