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Browsing ELibrary by Title
Now showing items 4689-4708 of 26297
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(2006)Ocean Drilling Program Leg 193 drilled two sites at the PACMANUS hydrothermal field, Snowcap and Roman Ruins. We investigated electrical properties of core samples recovered from these sites to study the effect of hydrothermal ...
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(2002)This paper shows how it is possible to use wells drilled during geotechnical pre-investigation of a tunneling site to obtain a 2-D image of the resistivity close to a tunnel boring machine. An experimental apparatus is ...
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(2002)Efforts to map the lithology and geometry of sand and gravel channel-belts and valley-fills are limited by an inability to easily obtain information about the shallow subsurface. Until recently, boreholes were the only ...
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(2006)We propose a method of surface and marine electrical prospecting using controlled-source excitation. The method is designed to detect hydrocarbon deposits at depths of a few kilometers and to map their boundaries. The ...
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(1987)Investigations were made in DC current generated by a 6V acid battery. The electrodes were polished magnetite plates placed in electrolytic beakers containing 0.01N NaCl (pH 5) and connected by a salt bridge. One of the ...
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(1997)The electrochemical behavior of Dy3+ on Fe electrode in molten NaCl-KCl-DyCl3 has been studied by means of cyclic voltammetry, electrode potential-time curve after potentiostatic electrolysis, potential-step method, and ...
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(1987)The authors call the difference in potentials between a solid electrolyte and a solution the 'solution potential' (SP) in the case of solution and the 'crystallization potential' (CP) in the case of crystallization. The ...
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(2001)Six carbonate samples of different origin were investigated for their properties: composition, grain size (Mz), specific surface area (SSA) and electrokinetic (ζ) potential. Four of the samples were of natural origin-one ...
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(2002)The behaviour of streaming potential is directly related to movement of groundwater. The responses for typical subsurface flows are modelled to investigate possibilities of spontaneous polarization (SP) when performing ...
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ELECTROKINETICALLY ENHANCED TRANSPORT OF ORGANIC AND INORGANIC PHOSPHORUS IN A LOW PERMEABILITY SOIL (2006)The transport of P sources (organic and inorganic phosphorus) using electrokinetic process through a low-permeability soils was investigated. A series of batch experiments was conducted to construct the adsorption isotherms ...
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(2006)The paper presents the results of long-term observations of the parameters of the natural impulse electromagnetic field of the Earth (NIEMFE) in the VLF range in the Baikal rift zone. The electromagnetic "seismic calm" ...
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(2001)Electromagnetic (EM) coupling is generally considered to be noise in induced polarization (IP) data and interpretation is difficult when its contribution is large compared to the IP signal. The effect is exacerbated by ...
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(2004)Electromagnetic emission (EME) caused by fracturing of piezoelectric effects in rocks has been studied. We have analyzed a finite size piezocrystal undergoing such mechanical stresses which cause an uniform movement of a ...
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(1989)Several mechanoelectromagnetic effects are analysed as probable generating mechanisms of electromagnetic impulses produced by an earthquake in its focus. Based on a simple mechanical concept of earthquakes and well-known ...
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(2002)The bulk electrical anisotropy of sedimentary formations is a macroscopic phenomenon which can result from the presence of porosity variations, laminated shaly sands, and water saturation. Accounting for its effect on ...
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(2003)A practical limitation in the use of generalized 3D forward modeling algorithms for inversion of electromagnetic data is the high computational cost of solving large, ill-conditioned systems of linear equations arising ...
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(2004)The first results on the modelling of magnetic signals induced by transient equatorial ring currents in the magnetosphere with a timescale of the order of days and recorded at satellite altitudes are presented. The input ...
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(2006)The aim of this work is the joint application and integration of non-invasive geoelectrical methods for studying the landfill of Savoia di Lucania (Southern Italy). This landfill for its engineering features and small ...
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(2001)We formulate a mathematical model of generation and propagation of seismo-electromagnetic (EM) signals in the basin of a marginal sea with an arbitrary 2D geological structure of the bottom, including the transfer of seismic ...
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(1986)Abstract Station “Khibiny”, equipped with a powerful magnetohydrodynamic (MHD) generator and/or diesel generator, has been successfully used since 1976 to study the electrical conductivity of the Earth's crust in the ...
Now showing items 4689-4708 of 26297