摘要
大地中存在多种形式的天然的或人工的电磁场,研究它们的形成、发展规律和实际应用是地电磁学科的基本任务。现有的应用地电磁场进行探测的方法都是基于电磁场的稳态空间分布,分辨率不高,而且不能提供阻抗界面的性质。如能应用地电磁场的运动学和动力学特征进行探测,则可使地电磁场的研究取得突破性进展。此外,从方法上,研究伪随机谱,区分异常源性质,研制全智能的多道、轻便仪器,二维和三维数据处理与解释,层析成像特别是频率不高的地电磁场数据的层析成像,新的数学方法如小波交换、分形几何的应用等都是当前的研究前沿。
In the earth there exist various forms of natural and artificial electromagnetic fields, the study of whose formation, laws of development and practical application constitutes the fundamental tasks of the discipline of geoelectromagnetics. The currently applied methodologies of surveying electromagnetic fields are based on the steady state distribution of the electromagnetic fields. Their resolution is low and there is a lack of ability to provide the properties of impedance interface. If the kinetic and dynamic properties of geoelectromagnetic fields can be applied to the prospecting process, breakthroughs can be made in research. In addition, in terms of methodology, the present frontiers of research are pseudo random spectra, distinction of properties of anomalous fields sources, development of high intelligence , multichannel and portable instruments, processing and interpretation of two and three dimensions electromagnetic field data, computer tomography, and in particular, the computer tomography of low frequency electromagnetic field data, application of new mathematical method such as wavelet transform and fractics.
出处
《中国科学基金》
CSCD
1995年第2期47-51,共5页
Bulletin of National Natural Science Foundation of China
关键词
地电磁场
垂向分辨率
激发极化
动力学
探测
geoelectromagnetic fields, vertical resolution, electromagnetic sounding, induced polarization , kinetics, dynamics
