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基于磁异常数据的居里面反演方法研究 被引量:2

Inversion methods of the depth of Curie point based on magnetic anomaly data
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摘要 本文总结了基于磁异常频谱特征反演居里面的基本理论和方法,分析了磁性体场源满足随机分布及分形分布两种假设下的磁异常频谱特征及其对数径向能谱与磁性体场源埋深之间的关系,并给出居里面埋深估计的方法。基于以上方法对华北地区磁异常数据进行分析并计算了相应的磁性体场源埋深,实际计算表明,基于磁性体场源随机分布假设的居里面深度计算结果与该地区地热结构有良好的对应关系。实际数据处理的结果验证了这些方法的可靠性和实用性。估算居里面深度的两种不同方法适用于不同的地质模型,实际应用应结合区域磁异常源分布的特点,以获取合理的居里面深度估计值。 This paper summarizes the theory and methods of Curie-based magnetic anomaly inversion, and discusses the method based on two different assumptions: the random distribution of the magnetic field source and the scaled distribution of the magnetic field source. Using the above methods to study the northern magnetic anomaly data, we analyze and calculate the depth of the magnetic source. Through the experimental data we compared the results and reliability of different methods of inversion. The calculations of northern region show that there is a good correspondence between the result of the method based on random distribution assumption and the geothermal structure of the region. The processing results of actual data verify the reliability and usefulness of these methods, The two different methods apply to two different geological models, so combining with the characteristics of the distribution of the regional magnetic source we will get more reasonable regional Curie depth.
作者 南方舟 徐亚 梅金顺 NAN Fang-zhou, XU Ya, MEI Jin-shun(1. Key laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China 2. University of Chinese Academy of Science, Beijing 100049, China 3. China University of Petroleum, BeijingCampus (CUP), Beijing 102249, China)
出处 《地球物理学进展》 CSCD 北大核心 2015年第3期1078-1084,共7页 Progress in Geophysics
基金 致谢感谢审稿专家提出的修改意见和编辑部的大力支持!
关键词 居里面 磁异常 频谱分析 分形分布 Curie magnetic anomaly spectral analysis scaled distribution
作者简介 南方舟,男,1990年生,河北人,硕士研究生,研究方向为重力、磁法、电磁法反演.(E-mail:nanfangzhou@mail.iggcas.ac.cn) 通讯作者,徐亚,男,1980年生,中科院地质与地球物理研究所副研究员,从事重、磁场处理与解释方面研究工作.(E-mail:xuya@mail.iggcas.ac.cn)
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