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21	Reduction of ambiguity in geological models using multiple data sets Rigoti, Augustinho January 1985 (has links) No description available. Electromagnetism Geophysics Electric prospecting Earth resistance
22	Electrical methods surveys in southern Arizona for hydrogeological investigations Didi, Didace, 1952- January 1990 (has links) The central induction TEM and CSAMT strengths and weaknesses were analyzed at the San Xavier geophysical test site. TEM results indicate that the depth of investigation of the TEM sounding data is limited by the noise level. CSAMT data are contaminated by static shift effects due to shallow geological inhomogeneities or topography. CSAMT data are also contaminated by the transmitter overprint which depends on the geology beneath the transmitter dipole and the receiving stations. In the Miami Wash-Pinal Creek area of Arizona, where the groundwater contamination was to be studied by electrical methods, the complex resistivity method was first used. Results in the Miami Wash-Pinal Creek area show a trend which consists of a high-low-high trend in the resistivity/I.P. curves for soundings located in the contaminated zone and of an increase of the I.P. curve in the uncontaminated zone.
23	The mise-a-la-masse method using induced polarization Boissevain, Paul Robert January 1982 (has links) No description available. Earth resistance -- Measurement. Electric prospecting -- Technique.
24	Analysis of complex resistivity models in spheroidal geometries Flanagan, Peter William January 1983 (has links) No description available. Earth resistance -- Computer programs.
25	Magnetotellurics in the Eastern Townships of Quebec Haslam, Christopher Richard Sterland January 1974 (has links) No description available. Tellurometer. Finite element method. Electric prospecting. Geology -- Québec (Province) -- Estrie.
26	Studies of geologic structures with the VLF method. King, Warren F. January 1971 (has links) No description available. Geology, Structural Electric prospecting Geology -- Ontario Geology -- Québec (Province)
27	Studies of geologic structures with the VLF method. King, Warren F. January 1971 (has links) No description available. Electric prospecting Geology -- Ontario Geology, Structural Geology -- Québec (Province)
28	Magnetotellurics in the Eastern Townships of Quebec Haslam, Christopher Richard Sterland January 1974 (has links) No description available. Geology -- Québec (Province) -- Estrie. Electric prospecting. Tellurometer. Finite element method.
29	Resistivity and Induced-Polarization Responses Over Two Different Earth Geometries Akman, Hulya Hayriye January 1988 (has links) The object of the thesis is to obtain the apparent- resistivity curves and induced-polarization (IP) effects that are utilized in geophysical exploration. Two different earth geometries, the thin horizontal conductive layer and vertical dike, were studied. The solution for both cases is identical. First, quasi- static electrical conditions were assumed, so that the problem could be solved using potential fields. The exact solution to the problem was obtained by using the Bessel integral formulation. Also, the image method was employed to find the potential fields. We noticed that the image -type series converges best when the dike or layer was thick (ratio of thickness to electrode spacing, b/a, is large) and the reflection coefficient was not near ±1. Otherwise, it is preferable to employ the thin conductive sheet model. The next step was to determine the dilution and distortion factors which are relevant to the induced polarization response. Finally, numerical results were obtained using a Fortran computer program. These calculations were compared with some results taken from the literature and good agreement is seen. Earth electrical properties geodesy induced polarization properties resistivity Electric prospecting Earth currents
30	PRINCIPAL COMPONENTS AND TEXTURE ANALYSIS OF THE NS-001 THEMATIC MAPPER SIMULATOR DATA IN THE ROSEMONT MINING DISTRICT, ARIZONA (GEOLOGIC, DIGITAL IMAGE PROCESSING, TEXTURE EXTRACTION). Yang, Hsien-Min, 1957- January 1985 (has links) No description available. Digital mapping.

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