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Browsing by Title
Now showing items 16402-16421 of 38944
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(2003)Estimation of soil water content in the root zone with time in different parts of a watershed is important for both strategic and tactical management of water resources, as well as of agricultural production, water quality, ...
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(1989)Analysis of available geological and geophysical data indicates that slow convective flows occur in certain regions in the mantle. Many investigators have studied the structure of such flows, but the measurements cannot ...
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(2003)The multifractal characteristics of seismic waveforms that have propagated through fractured media were studied using numerical experiments. The study suggests that multifractal waveform parameters (i.e. information ...
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(1997)Addition of a simple evacuated collection device to nickel-tube pyrolysis bombs permits collection of the hydrogen gas produced during decomposition of water and other substances containing hydrogen. Tests using water ...
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(1988)This article shows Raman spectra of water in the liquid (a) and solid (b) states. There are considerable differences between these spectra. We have made a detailed study of the alteration of the spectra when water crystallizes, ...
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(2002)A passive sampling system for use with rhodamine WT (RWT) in groundwater tracing experiments was developed to assist in the characterisation of groundwater flow paths. Amberlite XAD-7 resin was found to be suitable for ...
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(1987)The possibility of using seismoacoustic data to study the postsedimentational alteration of marine sediments is of interest both in the theory of lithogenesis and in practical problems associated with efficient utilization ...
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(1997)A nuclear microbeam technique called elastic recoil detection analysis (ERDA) or forward recoil spectroscopy which is capable of yielding bulk H in silicates at ppm sensitivities is described. This technique is nondestructive ...
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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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(PANGAEA, 2013-04-26)High-latitude ecosystems play an important role in the global carbon cycle and in regulating the climate system and are presently undergoing rapid environmental change. Accurate land cover data sets are required to both ...
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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 ...
Now showing items 16402-16421 of 38944