地磁学

The main contents of this dissertation are as follows:(1) According to involved theories of ferromagnetics, the microscopic mechanism of domain structure is analyzed systematically; through the movement variation of domain structure, that is the movement of domain wall and rotation of magnetic moment, the magnetization process is illustrated in an applied magnetic field. Meanwhile, by the use of energy methods, a study is performed on influencing factors of domain movement including stress, dope, scattering field, etc. The influence of various energies is dealt with on the magnetic behavior and parameters of ferromagnetic material; the corresponding theories of the spontaneous magnetization and technical magnetization are also discussed.

本文以此为研究背景，通过理论分析和模型试验，系统地研究了钢结构全磁通应力无损检测技术的基本理论和应用方法，主要研究工作如下：(1)根据铁磁学的相关理论，分析了铁磁材料磁畴结构产生的微观机理，并通过对磁畴结构运动变化规律，即磁畴壁移动和磁矩转动规律的研究，分析了外磁场作用下铁磁材料的磁化过程与一般规律，同时采用能量分析方法，研究了影响铁磁材料磁畴运动的主要因素，包括应力、掺杂和弥散磁场等，探讨了各种能量对铁磁材料磁行为和磁参量的影响，研究了相应的自发磁化理论和技术磁化理论等。

Based on the dating of Late Cenozoic strata and lithology changes analyses, it can infer the ages of layer landforms formation and the time of broken planation surface.

通过对晚新生代沉积地层高分辨率的环境磁学研究可进一步捕捉重大的环境变化事件，测定其形成的年代及变化，并推测剥蚀面形成和抬升的时间以及确定这些层状地貌形成的时代，进而推演六盘山和青藏高原构造隆升的历史。

In order to improve the accuracy in micromagnetic simulation of complex boundary, derived were the point function demagnetization tensor of equilateral triangular prisms in terms of the symmetry of the magnetic body and a theorem about demagnetization tensor.

针对数值微磁学中矩形网格处理复杂边界时计算精度较低的问题，利用磁体本身的几何对称性和退磁张量的性质，通过在实空间求积分的方法解析地推导了等边三棱柱的退磁张量。

Based on the high resolution environment magnetism analysis and geomorphy, the following conclusions and new findings are revealed

通过对晚新生代沉积地层高分辨率的环境磁学研究可进一步捕捉重大的环境变化事件，测定其形成的年代及变化，并推测剥蚀面形成和抬升的时间以及确定这些层状地貌形成的时代，进而推演六盘山和青藏高原构造隆升的历史。

Results show that the rock magnetic parameters well correspond to the paleoclimatic variations and sedimentary environmental changes.

结果表明，磁学参数较好地记录了古气候变化及沉积环境变化的信息。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。