Design and Application of Natural Audio Electric Field Frequency Selecting Instrument
An observation scheme, which is designed several frequencies suited over the natural audio electric field frequency range, is used to qualitatively understand the electrical structure of underground geological body. Weak signal detection technology has been used to amplify and filter the weak natural electric field signal, and read out them after selecting corresponding frequencies and integrating. This instrument can observe eight natural electric field signal at frequency of 8Hz, 16Hz, 32Hz, 64Hz, 128Hz, 256Hz, 512Hz, 1024Hz. Several reliable technologies have been used in the hardware design and software development to improve both the antiinterferences capability and system stability. Compared with field work instance, we conclude that natural audio electric field frequency selecting instrument can get the underground geological information within a certain depth, and therefore it can be used for fast survey in geology and mineral resources, and in engineering geophysical and water resources.
Natural audio electric field Frequency selecting instrument Magnetotelluric sounding Observe system
Liao Xiuying Cheng Hui Bai Yicheng
Institute of geographic Sciences and Natural Resources Research, CAS. Beijing, P.R.China 100101 Hunan University of Science and Technology, Xiangtan, P.R.China 411201 Central South University. Changsha, P.R.China 410083
国际会议
湘潭
英文
15-19
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）