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Browsing ELibrary by Title
Now showing items 13713-13732 of 21934
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(2002)A new method has been developed to orient 50-100 μm size single crystals to obtain XANES or EXAFS spectra along any crystallographic orientation relative to a polarized synchrotron X-ray beam. The method uses a modified ...
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(1989)In order to understand the role of volatiles in the phase transition from crystal to melt, it is very important to know not only the total concentration of fluid in the system, but also its distribution. The authors performed ...
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(2003)A new approach to estimating of shear-wave attenuation is proposed. The method is based on an assumption that an anisotropic attenuating geological medium possesses gyrotropic properties. Doing so allows to obtain attenuation ...
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(2004)When the parameters of a numerical model are adjusted, so that the predictions of the model match measurements from the real system, we need to take account of two sources of errors. These being measurement errors and ...
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(2004)Modifications to commercial finite element (FE) packages must be applied before they can be used for geophysical studies involving long wavelength deformation or viscoelasticity. This paper provides in detail how and why ...
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(2003)Banded iron formations are prominent sedimentary deposits of the Precambrian, yet the source of their silica remains unresolved. Here we show that Ge/Si ratios preserved in banded iron formation chert layers are indicative ...
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(2002)Accurate estimation of groundwater recharge is extremely important for proper management of groundwater systems. Many different approaches exist for estimating recharge. This paper presents a review of methods that are ...
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(2001)In this study we used the Kozeny-Carman (K-C) equation as a semi-physical model for estimating the soil permeability using data derived from microscope observations. Specific surface areas and porosities were obtained from ...
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(2003)Conventional experiments designed to investigate the mechanical properties of polycrystalline geological materials are generally restricted to measurements of whole-rock properties. However, when comparing the measurements ...
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(2003)Mountain-front recharge is a major component of recharge to inter-mountain basin-fill aquifers. The two components of mountain-front recharge are (1) subsurface inflow from the mountain block (subsurface inflow), and (2) ...
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(2003)We use a neighborhood algorithm to explore the fit to long period seismic data of a wide variety of long wavelength mantle models. This approach to the global tomographic inverse problem yields probability distributions ...
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(2004)The ’T–Z plot’ method consists of plotting the throw of sedimentary horizons across a growth fault versus their depth in the hanging wall. This method has been initially developed for the analysis of growth fault kinematics ...
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(2002)The concept of the thermodynamics of curves is used to analyze change in the variability of time or spatial series. More specifically, the entropy of a curve makes it possible to divide a nonstationary random field, because ...
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(2002)The moments of the airborne electromagnetic impulse response have been derived for a thick horizontal layer. These moments can be written in an analytic form for the first- and second-order moments, both for the horizontal ...
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(2004)A number of recent studies have applied the cumulative log Gaussian (CLG) modelling technique to bulk isothermal remanent magnetization (IRM) curves to investigate the coercivity contributions of different minerals contained ...
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(2002)A combination of advances in experimental techniques and mathematical analysis has made it possible to characterize phase distribution and pore geometry in porous media using non-destructive X-ray computed tomography (CT). ...
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(2000)This contribution uses Cr2p and 3p binding energies (BEs) determined by X-ray photoelectron spectroscopy (XPS) to distinguish CrIII sorbed to different mica sorption sites. The results were used to better understand ...
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(2003)The procedure estimating hourly rainfalls by merging radar-derived rainfalls and gauge measurements is developed and tested. It uses simple linear regression, which is complemented by the normalization and correction of ...
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(1998)Analyses of 18O/16O and 17O/16O in silicate and oxide minerals by UV laser ablation of 100 x 80 x 50 μm sample pits combined with irm-GCMS yield precision and accuracy similar to that of conventional methods. This represents ...
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(1995)UWG-2 is a new garnet standard for oxygen isotope analysis prepared from a single large porphyroblast that was homogeneous (+/- 0.21%%) at the millimeter-scale before grinding. The δ18O value of UWG-2 has been determined ...
Now showing items 13713-13732 of 21934