| 微磁模拟及在岩石磁学中的应用 |
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| 引用本文： | 葛坤朋, 刘青松. 2018. 微磁模拟及在岩石磁学中的应用. 地球物理学报, 61(4): 1378-1389, doi: 10.6038/cjg2018L0199 |
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| 作者姓名： | 葛坤朋 刘青松 |
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| 作者单位： | 1. 东华理工大学放射性地质与勘探技术国防重点学科实验室, 南昌 330013; 2. 东华理工大学地球物理与测控技术学院, 南昌 330013; 3. 南方科技大学海洋科学与技术学系, 深圳 518055; 4. 海洋科学与技术国家实验室海洋地质研究所, 青岛 266071 |
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| 基金项目： | 国家自然科学基金项目（41504054，41374073，41604104），江西省自然科学基金资助项目（20171BAB213029），东华理工大学博士启动基金项目（DHBK201402）联合资助. |
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| 摘 要： | 岩石或沉积物的磁学性质受到所含矿物的种类、粒径、形状、相互作用以及环境等多种因素的作用，但是传统的岩石磁学实验很难定量解耦这些参数的影响.本文从微磁模拟与岩石磁学相结合的角度探讨了定量分析矿物磁学特征的研究进展.首先对微磁模拟的原理和发展历程进行了简要介绍.随后就矿物磁信息记录的物性影响和化学改造两个基本问题，总结了微磁模拟在岩石磁学领域的应用特色.最后对微磁模拟在岩石磁学中的研究前景提出了展望.以上讨论指出微磁模拟在地学中具有重要应用价值，加深了我们对地质过程中矿物磁学性质的理解.
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| 关 键 词： | 微磁模拟 岩石磁学 磁铁矿 磁化强度 古地磁学 |
| 收稿时间： | 2017-04-05 |
| 修稿时间： | 2018-02-25 |
Micromagnetic modeling and its significances on rock magnetism |
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| GE KunPeng, LIU QingSong. 2018. Micromagnetic modeling and its significances on rock magnetism. Chinese Journal of Geophysics (in Chinese), 61(4): 1378-1389, doi: 10.6038/cjg2018L0199 |
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| Authors: | GE KunPeng LIU QingSong |
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| Affiliation: | 1. Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, China; 2. School of Geophysics and Measurement-Control Technology, East China University of Technology, Nanchang 330013, China; 3. Department of Marine Science and Engineering, Southern University of Science and Engineering of China, Shenzhen 518055, China; 4. Laboratory for Marine Geology, Qingdao National Oceanography Laboratory for Science and Technology, Qingdao 266071, China |
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| Abstract: | Magnetic properties of minerals in natural rocks or sediments are controlled by many factors, such as magnetic species, grain size, shape, interactions, and the hosting environment. Conventional experiments of rock magnetism can hardly decouple the effects of these factors on the magnetism of minerals. In this study, we review studies of magnetic properties of rocks by combining rock magnetic experiments with micromagnetic modeling approaches. Firstly, principles and history of micromagnetic modeling are briefly introduced. Then, two basic topics in paleomagnetism, including effects of physical constraints and environmental modification of magnetic grains on magnetic behaviors are discussed in terms of micromagnetic modeling. Finally, we propose directions in which micromagnetic modeling is likely to develop in the future. In all, micromagnetic modeling of magnetic grains provides a further understanding of magnetic minerals in geological processes. |
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| Keywords: | Micromagnetic modeling Rock magnetism Magnetite Magnetization Paleomagnetism |
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