Physics of magnetism
Physics of magnetism
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DOI：
10.1109/9780470545188.ch1
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发表时间：
1964
期刊：
影响因子：
--
通讯作者：
近角 聡信;S. Charap
中科院分区：
文献类型：
--
作者：
近角 聡信;S. Charap
古地磁学是研究岩石磁性的学科。它是地球物理学中应用最广泛的学科之一，在地磁学、构造学、古海洋学、火山学、古生物学和沉积学等不同领域都有应用。尽管潜在的应用是多种多样的，但基本技术是非常一致的。因此，在古地磁数据分析基本工具的基础上，可以打开许多此类应用的大门。古地磁研究的基础之一是岩石的磁性与地球磁场之间的关系。在这一章中，我们将回顾磁性背后的基本物理原理：什么是磁场，它们是如何产生的，它们是如何测量的？尽管许多人觉得关于科学单位的讨论很无聊，但当古地磁学家从“CGS”转换到国际系统(SI)单位时，就产生了许多困惑，文献中错误比比皆是。因此，我们将解释这两种单位系统，并了解如何在它们之间成功转换。在附录A中有一个基本的数学技巧的回顾，读者可以参考它来获得帮助。
Paleomagnetism is the study of the magnetic properties of rocks. It is one of the most broadly applicable disciplines in geophysics, having uses in diverse fields such as geomagnetism, tectonics, paleoceanography, volcanology, paleontology, and sedimentology. Although the potential applications are varied, the fundamental techniques are remarkably uniform. Thus, a grounding in the basic tools of paleomagnetic data analysis can open doors to many of these applications. One of the underpinnings of paleomagnetic endeavors is the relationship between the magnetic properties of rocks and the Earth’s magnetic field. In this chapter, we will review the basic physical principles behind magnetism: what are magnetic fields, how are they produced, and how are they measured? Although many find a discussion of scientific units boring, much confusion arose when paleomagnetists switched from “cgs” to the Système International (SI) units, and mistakes abound in the literature. Therefore, we will explain both unit systems and look at how to convert successfully between them. There is a review of essential mathematical tricks in Appendix A, to which the reader is referred for help.