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Browsing ELibrary by Title
Now showing items 9740-9759 of 22924
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(2004)Epidote minerals are known since the 18th century, but at that time the greenish to dark colored varieties were termed actinolite or schorl and not distinguished from the minerals to which these names apply today. Haüy defi ...
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(2002)The relationships between electrical conductivity, temperature, salinity, and density are studied for brackish Lake Issyk-Kul. These studies are based on a newly determined major ion composition, which for the open lake ...
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(1998)The chemical composition of Niger river water measured bimonthly at Bamako (Mali) during the period 1990-1992 provides an estimate of present weathering rates in the upper Niger basin. The dominant weathering process is ...
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(1992)The composition and structural features of megacrystals of garnets, ilmenites, monoclinic pyroxenes, K-Na-feldspars occurring as inclusions in the Cenozoic alkaline basalts of Mongolia have been studied by means of X-ray ...
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(1988)Zones of active orogeny with rapid and irregular movements (e.g. the Alpine Himalaya belt) and a zone of slow movements (East European and Siberian platforms) are differentiated in two sets of precise levelling data. A ...
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(2004)We study the dynamic traction and the slip velocity evolution within the cohesive zone during the propagation of a dynamic rupture using rate- and state-dependent constitutive laws. We solve the elastodynamic equation for ...
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(1989)Several geodynamic situations involve strong horizontal compression of the lithosphere that produces a high degree of its deformation or failure. This is especially true of active continental margins, collision zones, and ...
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(2000)The effects of surface resistivity inhomogeneities on magnetotelluric sounding (MTS) curves under the complex geologic conditions of the Site were examined. Three-dimensional models were used to imitate a resistivity ...
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(2004)This paper presents results of shear strength and acoustic velocity (p-wave) measurements performed on: (1) samples containing natural gas hydrate from the Mallik 2L-38 well, Mackenzie Delta, Northwest Territories; (2) ...
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(1996)Relationship between physical property change of melt and solidification structure has been investigated by measuring the density, viscosity and electrical resistivity of the Al-Si eutectic alloy melt with different Ce ...
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(2004)Heat capacity (CV) and entropy (S) as a function of temperature were calculated for phases in the CaO-Al2O3 system from vibrational spectra using a quasi-harmonic model. Calculated values of CV at 298 K for the calcium ...
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(2002)Sulfur and silicon are among the expected alloying light elements in planetary liquid iron cores. Structural properties of Fe-27 wt % S and Fe-17 wt % Si liquid alloys at high pressure and high temperature (0-5 GPa/1400-2300 ...
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PHYSICAL PROPERTIES OF NEAR-EARTH ASTEROIDS FROM THERMAL INFRARED OBSERVATIONS AND THERMAL MODELING (2002)We review the physical principles on which asteroid thermal models are based and their application in the derivation of asteroid sizes and albedos. In particular, the use of simple thermal models to derive reliable diameters ...
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(2001)Variations of physical properties of rocks of a thick sedimentary layer are analysed as functions of the lithogenesis temperature. The maximum depth of the sedimentary basin was establish as a thermal flow function. ...
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(1996)The physical significance of "earthquake quanta" is discussed in the perspective of a proposed concept "seismon." It is pointed out that the physical significance of earthquake quanta may be understood in the way similar ...
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(2000)Marbles as building stones as well as in their natural environments show complex weathering phenomena. The most important damage scenario is based on the highly anisotropic thermal expansion coefficient α of calcite, i.e. ...
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(1998)Abstraet--Cu-doped alumina-pillared montmorillonite samples have been prepared and characterized with X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), electron spin resonance (ESR) and in- ductive coupled plasma ...
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(1987)The peculiarities of weathering processes involving duration, slow change of ambient conditions, isothermality as well as proceeding in open systems permit to study these processes in a steady-state approach (, where Ci ...
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(2001)Magnetite gabbro occurs in the central part of the layered intrusion of the western Pansky Tundra as layers and lenticular bodies from 20 to 100 m thick and from hundreds of meters to 10 km long. They show fine-grained ...
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(2004)Alvinella pompejana is a polychaetous annelid that inhabits narrow tubes along the walls of high-temperature hydrothermal vent chimneys. The worm hosts a rich community of epibiotic bacteria that coats its dorsal surface. ...
Now showing items 9740-9759 of 22924