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Now showing items 12877-12896 of 39126
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(1998)Despite the fundamental importance of plates in the Earth's mantle convection, plates have not generally been included in numerical convection models or analog laboratory experiments, mainly because the physical properties ...
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(2003)Self-diffusion coefficients for Si and O in Di58An42 liquid were measured from 1 to 4 GPa and temperatures from 1510 to 1764°C. Glass starting powders enriched in 18O and 28Si were mated to isotopically normal glass powders ...
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(1988)The large-scale thermal convection that causes lithospheric plates to move generates in the upper part of each mantle cell a thermal boundary layer that travels at a constant speed without distortion. There is a strong ...
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(2004)The method of generation of self-oscillations in rocks is developed here. Self-oscillations arise as a result of direct and inverse mechanoelectric transformations without an external generator. Laboratory experiments were ...
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(2004)The flow of groundwater during a pumping test experiment is responsible for a measurable electrical field at the ground surface owing to the electrokinetic coupling between the Darcy velocity and the electrical current ...
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(1990)We know that self-similarity and a hierarchical organization are typical of the structure of complex natural dynamic systems. In the course of an empirical analysis of dynamic processes in liquid, solid and gaseous natural ...
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(1987)The present paper discusses the vertical structure of the principal thermocline in another important dynamic zone, a zonally-oriented large-scale jet stream. The zone of the Trade Wind Drift is a typical example of such a ...
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(1987)In the time domain, a deviation of the emission of seismic energy from that predicted by the independent trial process has been proved on various scales; this deviation is the result of interaction between earthquakes. On ...
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(2004)The P–T partition function in statistical thermodynamics can be used to derive semi-empirical formulations of the Gibbs free energy G for minerals and fluids. Parameterization of these equations includes simultaneous ...
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(1998)Significant differences in fission-track annealing kinetics indicate that chlorapatites may give older fission-track ages and record different thermal histories to those derived from co-existing fluorapatites which have ...
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(1998)Interstratified illite-smectites (I/S) and illite-smectite-vermiculites (ISV) representing both hydrothermal and diagenetic transformations and having different degrees of structural order were investigated for cis-trans ...
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(2003)This work studies a methodology starting from georadar data that allows a semiquantitative evaluation of massive rock quality. The method is based on the concept that in good quality rock, most of the energy is transmitted, ...
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(2002)This report extends previous work (. Chlorophyll degradation during senescence and death. Organic Geochemistry 29, 1233-1251.) in which we detailed type-I (alteration) and -II (destruction) degradation of chlorophyll with ...
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(2003)The deformation of marker horizons across slip surfaces can lead to the development of several types of flanking structures. The development of such structures was investigated using a numerical model to simulate the flow ...
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(2003)A nonlinear regression method is used to calculate the hydraulic parameters of a stream-aquifer system using pumping test data. Five parameters, including the horizontal hydraulic conductivity (Kx), aquifer anisotropy (Ka), ...
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(2001)This paper reviews the basic concepts of sensitivity analysis and points out their limitations. A case is then made for logarithmic sensitivity. The magnitude of logarithmic sensitivity alone does not determine the accuracy ...
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(2002)Field-scale transport of reactive solutes depends on spatially variable physical and chemical soil properties. The quantitative importance of physical and chemical parameters required for the prediction of the field-scale ...
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(2002)The sensitivity distributions of different electrode configurations are computed for both a homogeneous resistivity distribution and a model consisting of two vertical zones of homogeneous resistivity. The inner zone around ...
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(2002)Variability with respect to model input data is recognised as a potential source of uncertainty in model predictions. The aim of this study is to estimate the sensitivity of computed values of water balance terms, in ...
Now showing items 12877-12896 of 39126