CSAMT And MT Looking For Geothermal Resources Application

The CSAMT method is the use of different rock conductivity differences observed a field potentialand magnetic field intensity change of an electromagnetic exploration method. In recent years rapiddevelopment has the following advantages: low resistance sensitive, effectively dividing fault,groundwater gathering area; exploration depth, topographic characteristics influence small; it caneffectively avoid the high resistance shielding, the resolution of conventional resistivity method andseismic refraction method solve the problem; of good conductive medium resolution ability, highefficiency.MT is a natural electromagnetic field source to study the earth’s interior structure of electricity animportant geophysical method. Its basic principle is: according to different frequencies ofelectromagnetic wave in conductive medium with different skin depth principle, in surfacemeasurements from high frequency to low frequency electromagnetic response of the earth’s sequence,after the relevant data processing to obtain land from shallow to deep electric structure.CSAMT and MT method in solving the geothermal resource survey of. The paper first introducesthe basic principle of CSAMT method; then according to the actual census problems, analysis of itsprinciple and introduces and studies the data distortion correction method; combining with CSAMT andMT method in Jiayin area Heilongjiang province the application of this method in practice, problems cansolve the problem and the application effect were investigated. Based on the CSAMT method in deepmineral exploration in the application of research the following conclusions:1. CSAMT method apparent resistivity section and magnetotelluric method (MT) can reflect theabnormal underground medium, to a certain extent, can solve the longitudinal space on the geologicalproblems, contribute to the establishment of three-dimensional geological model.2. CSAMT excitation field can make the artificial control, can be in the MT cannot workinterference area, with good fitting; on shallow anomaly resolution higher, and according to theinterpretation of the actual needs, can detect deep larger scale anomaly body.3. CSAMT can effectively reflect the underground medium electrical characteristics, can accuratelydistinguish the presence of electrical difference geological body. The electrical properties are not easy todistinguish the abnormal area, requires a combination of gravity and magnetic data of geological andother constraints, to CSAMT apparent resistivity section for more sophisticated analysis.4. Through the work study, mainly the following results were obtained:a. identified the Jiayin bulge and concave boundary determination of Wulaga, end column Riverdepression existence and approximate depth.b. identified the recessed region and the bulge area distribution and resistivity characteristics.c. specified for geothermal targets, recommend promising hole...