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Browsing ELibrary by Title
Now showing items 7513-7532 of 22187
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(1999)It is often argued that the δ18O value of oceanic water was maintained close to 0%% for hundreds of millions of years, as a consequence of oxygen isotope exchange between oceanic crust and seawater. However, for several ...
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(2001)Grassed areas, such as grass filter strips (GFS) and grassed swales, have been used extensively for the protection of surface water against erosion and polluted runoffs. A mathematical model of sediment transport in runoff ...
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(2001)We present a method for modelling seismic wave propagation in a whole-earth model by solving the elastodynamic equations in 2-D cylindrical coordinates (r, θ) using the Fourier pseudospectral method (PSM). In solving the ...
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(2002)Seepage from a stream, which partially penetrates an unconfined alluvial aquifer, is studied for the case when the water table falls below the streambed level. Inadequacies are identified in current modelling approaches ...
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(2004)Field estimation of soil water flux has a direct application for water resource management. Standard methods are often difficult to apply because of the heterogeneity of the subsurface. In the present study, we show that ...
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(2003)This paper presents the first attempt to provide a two-dimensional numerical model simulating processes and related deposits of individual subaqueous bipartite gravity flows. A new code for dense flows has been implemented ...
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(2002)Atomistic simulations have been carried out to study the adsorption of the hydrated uranyl ion on a variety of faces of goethite (α-FeOOH). The relative stabilities of these faces have been assessed by calculation of the ...
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(2002)The rheological behaviour of many rock-types will depend on how mixtures of different minerals and rock clasts behave together. This paper develops two-dimensional modelling of the bulk viscosity of two-phase viscous ...
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(1998)The rates of passive degassing from volcanoes are investigated by modelling the convective overturn of dense degassed and less dense gas-rich magmas in a vertical conduit linking a shallow degassing zone with a deep magma ...
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(2001)This paper begins with a review on how rays may be traced though isotropic inhomogeneous media separated by curved interfaces. The results are applied to the case of a layer over a half-space in which the seismic velocity ...
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(2002)Electric fields occurring at the seafloor during geomagnetic disturbances drive geomagnetically induced currents (GIC) in submarine cables, possibly leading to problems in the operation of the equipment and systems connected ...
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(2000)The physical variables controlling crust-dominated lava flow have been investigated using laboratory experiments in which molten polyglycol wax was extruded from a point source on to a horizontal plane under cold water. ...
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(1999)The Earth may be described as a global system consisting of the components solid Earth, hydrosphere, atmosphere, and biosphere. This system evolves under the external influence of increasing solar luminosity. In spite of ...
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(1994)In the following article we have reviewed the mineralogical, chemical, physical and isotopic evidence concerning the growth of coated diamonds, and have combined it to produce a comprehensive model for their formation.We ...
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(2001)The results of modelling the hydrological cycle (HC) for river basins using satellite-based land surface temperature (LST) fields are presented. The HC model describes vertical moisture and heat transfer in the ...
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(2002)Interactions between soil surface properties, water runoff and erosion occur at many time and space scales. The paper focuses primarily on the effects of soil microtopography at a range of spatial scales and considers some ...
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(2001)The “Black oil” model is extended to describe the four-phase flow of the oil-gas–condensate systems in porous media, by considering the solubilities of gas in the condensate, water, and oil phases and condensate evaporation ...
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(2002)Future models for predicting the viscosity of geologically relevant silicate melts must find a means of partitioning the effects of composition across a system that shows varying degrees of non-Arrhenian temperature ...
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(2002)A model describing the increase in the relative permittivity of water with distance from the soil mineral surface is presented. The model assumes an exponential increase in the value of permittivity with increasing distance ...
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(1989)There are two different models that can be used to estimate the second-order seismoelectric effect. The Frenkel model describes the propagation of elastic waves in a disperse macroscopically homogeneous medium. The ...
Now showing items 7513-7532 of 22187