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Browsing Геология России by Title
Now showing items 2875-2894 of 39126
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(1998)We compared three experimental techniques for increasing the number of measurable horizontal confined fission tracks (HCTs) in annealed and unannealed zircon. These techniques are irradiation of 252Cf spontaneous fission ...
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COMPARISON OF FINITE DIFFERENCE AND FINITE ELEMENT SOLUTIONS TO THE VARIABLY SATURATED FLOW EQUATION (2003)Numerical solutions to the equation governing variably saturated flow are usually obtained using either the finite difference (FD) method or the finite element (FE) method. A detailed comparison of these methods shows that ...
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(1998)Dual crossovers between TOPEX/Poseidon and ERS-1 provide a measure of the radial accuracy of ERS-1 relative to the more precise TOPEX/Poseidon orbits. In particular harmonic analysis of the residuals from narrow latitudinal ...
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(1999)The determination of earthquake parameters (t 0, φ, λ, h, M) for the RECSA and ISC catalogs is discussed. It is shown that the epicenter coordinates (latitude and longitude) are similar in the two catalogs. The depth ...
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(1997)Amino acid racemization geochronology is widely applied to provide relative age control for carbonate fossils, however, there are significant chemical differences between genera which affect diagenetic reactions in proteins ...
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(2004)To carry out an efficient and effective exploitation of a slate mine, it is necessary to have detailed information about the production potential of the site. To assist us in estimating the quality of slate from a small ...
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(2003)Comparisons of PGE measurements by laser-ablation microprobe (LAM–ICP–MS) with micro-PIXE analyses on the same sulfide grains were made in order to assess data quality. Pyrrhotite, pentlandite and chalcopyrite from a few ...
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(2002)Simulations with a regional climate model RACMO were carried out over the catchment area of the Baltic Sea for the growing season 1995. Two different surface schemes were included which in particular differed with respect ...
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(2000)High-precision garnet chronometry using the Sm-Nd, U-Pb, Rb-Sr or Lu-Hf isotope systems is gaining widespread application for constraining the prograde and high-temperature history of metamorphic belts. However, due to the ...
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(2002)Degradation morphology of scarps can be used to estimate the age of an episode of uplift: linear diffusion models for slope degradation provide analytical solutions relying on simplified geometry and kinematics. In this ...
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(1997)The Late Cenozoic volcanic rocks of the East Sikhote Alin are believed to be Pliocene-Quaternary formations by most investigators, even though there is evidence that volcanic activity there began as early as the late ...
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(1997)The Late Cenozoic volcanic rocks of the East Sikhote Alin are believed to be Pliocene-Quaternary formations by most investigators, even though there is evidence that volcanic activity there began as early as the late ...
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(1989)Wave field theories derived from asymptotic methods, principally the ray method are the basis for interpretation of experimental and numerical results in seismic research. The zeroth-order term in the ray method, which has ...
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(1998)The physics and chemistry of laser fluorination techniques that rely on CO2 lasers and excimer lasers differ on several fundamental levels: the mechanisms of laser-sample coupling, the time-scales of the interactions, and ...
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(2003)High-resolution seismic-reflection/refraction data were acquired on the ground surface at six locations to compare with near-surface seismic-velocity downhole measurements. Measurement sites were in Seattle, WA, the San ...
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(2002)This study compares kinetic parameters determined by open-system pyrolysis and hydrous pyrolysis using aliquots of source rocks containing different kerogen types. Kinetic parameters derived from these two pyrolysis methods ...
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(2004)A range of tetramethylammonium salts with different base strengths was compared for off-line thermochemolysis of an aquatic natural organic matter sample. Tetramethylammonium acetate (TMAAc) in methanol produced a different ...
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(PANGAEA, 1997-10-07)Drillhole-determined sea-ice thickness was compared with values derived remotely using a portable small-offset loop-loop steady state electromagnetic (EM) induction device during expeditions to Fram Strait and the Siberian ...
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(1997)Experimental data were used to derive relations between seismic magnitude m and the weight of charge q for underground nuclear explosions for peaceful purposes and for industrial chemical blasts. A steeper relation m(q) ...
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(2003)Along plate boundary subduction thrusts, the transformation of smectite to illite within fault gouge at temperatures of ~150°C is one of the key mineralogical changes thought to control the updip limit of seismicity. If ...
Now showing items 2875-2894 of 39126