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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Numerical method for low-frequency electromagnetic fields and its applications
低频 电磁场数值 低频涡流场 有限元编程
2023/4/13
本报告首先回顾传统低频涡流场的两种计算格式，指出有限元编程实现过程中的基函数选择以及需要注意的难点问题。第二部分针对静磁场问题，通过引入规范条件提出了一种基于矢量磁位和磁场强度的新型的对偶格式，该方法通过巧妙构造基于矢量磁位和磁场强度的计算格式，整体矩阵完全一致并且可以给出系统电感参数的上下界，在实际参数提取中有很好的应用前景。在第三部分，由于传统低频涡流场近似不能有效考虑分布电容效应，而传统高频...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Solve electromagnetic interface problems on unfitted meshes
未拟合 网格 电磁接口
2023/5/4
Electromagnetic interface problems widely appear in a lot of engineering applications, such as electric actuators, invasive detection techniques and integrated circuit，which are typically described by...
第十三届中国国际地球电磁学术研讨会（The 13rd China International Geo-Electromagnetic Workshop）
第十三届 中国国际地球电磁 学术研讨会
2017/3/10
地球电磁学作为一项蓬勃发展的地球物理学分支，已被广泛应用于深部构造研究、资源勘探、环境和工程勘查等方面，并加速从传统勘探领域扩展到海洋、航空、卫星和异常监测等新兴探测领域。由中国地球物理学会地球电磁专业委员会主办、中国地质大学（武汉）、国家自然科学基金委员会地学三处和地球内部多尺度成像湖北省重点实验室等联合承办的“第十三届中国国际地球电磁学术研讨会”将于2017年11月下旬在武汉召开，中国国际地球...
If you’ve ever heard your engine rev through your radio while listening to an AM station in your car, or had your television make a buzzing sound when your cell phone is near it, then you’ve experienc...
2nd International Workshop on China Seismo-Electromagnetic Satellite Mission
electromagnetic waves seismo-ionospheric perturbations,
2016/7/27
China Seismo-Electromagnetic Satellite (CSES) is the first space-based observational platform in the strategic plan of China earthquake stereoscopic observation system, and the first satellite of spac...
Quantized electromagnetic response of three-dimensional chiral topological insulators
Quantized electromagnetic response three-dimensional chiral topological insulators
2016/1/22
Protected by the chiral symmetry, three-dimensional chiral topological insulators are characterized by an integer-valued topological invariant. How this invariant could emerge in physical observables ...
Electromagnetic fields in air of traveling-wave currents above the earth
Electromagnetic fields air of traveling-wave currents the earth
2015/10/16
The problem of the electromagnetic field created by a thin, straight conductor of infinite length carrying a forward traveling-wave current with a complex propagation constant g above a homogeneous an...
High resolution electromagnetic methods and low frequency dispersion of rock conductivity
electromagnetic sounding induced polarization frequency dispersion of conductivity resolution of sounding mathematical modelling
2015/10/8
The influence of frequency dispersion of conductivity (induced polarization) of rocks on the results of electromagnetic (EM) sounding was studied on the basis of calculation of electric field of verti...
A physical pattern recognition approach for 2D electromagnetic induction studies
electromagnetic induction pattern recognition 2d structures
2015/9/28
We present a new tomographic procedure for the analysis of natural source electromagnetic (EM) induction field data collected over any complex 2D buried structure beneath a flat air-earth boundary. Th...
Application of electric and electromagnetic methods to the definition of the Campi Flegrei caldera (Italy)
applied geophysics electric and electromagnetic methods campi flegrei caldera
2015/9/28
The results of an analysis of Dipolar Geoelectrical (DG), Magnetotelluric (MT) and Self-Potential (SP) data
collected over the emerged portion of the Campi Flegrei (CF) caldera (South Italy) are pres...
Tectonomagnetic and VLF electromagnetic signals in Central Italy
tectonomagnetism seismomagneticnetwork seismic activity VLF
2015/9/14
Tectonomagnetic field observations from absolute magnetic field level measurements were undertaken in Central Italy in an area extending between latitude 41°N and 43°N and between longitude 13°E and 1...
Spatial-temporal structure of seismicity of the North Tien Shan and its changeunder effect of high energy electromagnetic pulses
earthquake initiated seismicity electromagnetic pulse
2015/9/14
The effect of high-energy electromagnetic pulses emitted by a magnetohydrodynamic generator used as a source for deep electrical sounding of the crust on spatial-temporal structure of seismicity of th...
Background electromagnetic noisein the vicinity 1 Hz as a possible indicatorof earthquake-related anomalies
electromagnetic emission temperature Earth surface impedance earthquake precursor 1 Hz frequency range
2015/9/14
Measurements of space-time distributions of the background emissions in the frequency range 0.5-5 Hz and their seasonal and diurnal variations are presented. The analysis of impedance ratio determines...
Influence of strong electromagnetic discharges on the dynamics of earthquakes time distribution in the Bishkek test area (Central Asia)
seismic regime strong electrical discharges non-linear dynamics
2015/9/8
From 08/01/1983 to 28/03/1990, at the Bishkek ElectroMagnetic (EM) test site (Northern Tien Shan and Chu Valley area, Central Asia), strong currents, up to 2.5 kA, were released at a 4.5 km long elect...
Natural and man-made terrestrial electromagnetic noise: an outlook
radio noise background noise
2015/9/2
The terrestrial environment is continuously exposed to electromagnetic radiations which set up a «background»
electromagnetic noise. Within the Non Ionizing Radiation band (NIR), i.e. for f...