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Browsing ELibrary by Title
Now showing items 5232-5251 of 21934
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(2002)Temperature–depth data from 14 deep boreholes, located in the Irkutsk amphitheater and Baikal rift zone in Eastern Siberia, have been used to infer ground surface temperature (GST) histories for the last 100 ka. The results ...
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(2004)Ground-penetrating radar (GPR, also referred to as ground-probing radar, surface-penetrating radar, subsurface radar, georadar or impulse radar) is a noninvasive geophysical technique that detects electrical discontinuities ...
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GROUNDING OF MONITORING THE STABILITY OF PILLARS AND ROOF AT MINES BY MEANS OF INFORMATION CRITERION (2001)Ways for improving the truth of seismic monitoring of roof state, rock thickness and pillar state have been considered. It has been shown that probability of correct identification of rock mass state can be improved by ...
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(2003)Both terrestrial and marine forces drive underground fluid flows in the coastal zone. Hydraulic gradients on land result in groundwater seepage near shore and may contribute to flows further out on the shelf from confined ...
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(2004)Groundwater inflow into the caverns constructed in fractured bedrock was simulated by numerical modeling: NAP-SAC (DFN, discrete fracture network model) and NAMMU (CPM, continuous porous media model), which is a finite-element ...
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GROUNDWATER HYDROCHEMISTRY IN THE ACTIVE LAYER OF THE PROGLACIAL ZONE, FINSTERWALDERBREEN, SVALBARD (2002)Glacial bulk meltwaters and active-layer groundwaters were sampled from the proglacial zone of Finsterwalderbreen during a single melt season in 1999, in order to determine the geochemical processes that maintain high ...
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(2001)An automatic system for groundwater level observations is described along with synchronous recordings of changes in groundwater level in wells and of atmospheric pressure made in 1996-1998 at two wells of the Petropavlovsk ...
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(2006)Excess N from agriculture induces eutrophication in major river systems and hypoxia in coastal waters throughout the world. Much of this N is from headwaters far up the watersheds. In turn, much of the N in these headwaters ...
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(2002)Since the mid-1980s, a relative explosion of groundwater-recharge studies has been reported in the literature. It is therefore relevant to assess what is now known and to offer further guidance to practitioners involved ...
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(2004)Accurate mapping of the electrical conductivity and of the redox potential of the groundwater is important in delineating the shape of a contaminant plume. A map of redox potential in an aquifer is indicative of biodegradation ...
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(1997)Group additivity equations of state for aqueous organic molecules have been generated by combining the revised Helgeson-Kirkham-Howers (HKF) equations of state with experimental values of the standard molal properties of ...
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(2001)Hydrologic data sets are often of short duration and also suffer from missing data values. For estimation and/or extrapolation, the presence of missing data not only affects the choice of a particular method of analysis ...
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(2001)The formation of Gondwana during the late Neoproterozoic to early Cambrian times (550-530 Ma) was traditionally viewed as the welding of two, more or less contiguous, Proterozoic continental masses called East and West ...
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(2005)Er3+:Y0.5Gd0.5VO4 crystal with good optical quality was grown by Czochraski method. The structure of the crystal was determined by X-ray powder diffraction method. The segregation coefficient of Er3+ ions in the crystal ...
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(2002)The surface defines the interface between a mineral and its surroundings. In a dynamic context, reactions that occur between apatites and the environments in which they exist take place at or through their surfaces. This ...
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(2001)Microphenocrysts of chromian spinel in glass from an East Pacific Rise lava and three Icelandic subglacial lavas show a variety of complex skeletal, hopper, vermiform and chain textures. These grains of chromian spinel are ...
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(2001)We explore the role played on the growth of shallow-water carbonates by changes in accommodation using case studies from Late Quaternary to modern carbonate environments, i.e. coral reefs and carbonate platforms and ramps. ...
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(2003)Disc-shaped methane bubbles, often observed in marine sediments, result from growth in a medium that elastically resists expansion of the bubbles and yields by fracture. We have modeled this process to obtain estimates of ...
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(2004)Interaction of concentrated acidic uranyl-bearing solutions at initial values of pH of 2.5 and 4.5 with calcite at 25°C in an open system results in formation of schoepite, becquerelite and wyartite-II. Interaction of ...
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(1989)We investigated ferromanganese nodules primarily in order to obtain new data on the concentrations and isotopic composition of He, Ne and Ar in them; the objective was to determine whether they contained space dust and to ...
Now showing items 5232-5251 of 21934