Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Lateral variation"”.
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Lateral variation in upper mantle temperature and composition beneath mid-ocean ridges inferred from shear-wave propagation, geoid, and bathymetry
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1991.
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Lateral variation of P velocity in the Himalayan crust and upper mantle : a study based on observations of teleseisms at the Tarbela seismic array.
Thesis. 1976. M.S. cn--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Structure of the earth’s topmost inner core from seismic waveform inversion
… of the Earth’s inner-core structure. The lateral variation of the inner-core structure is just as pronounced with hemispherical variation in isotropic velocity of the topmost inner core, in attenuation, and in seismic anisotropy. This variation is very important in studying the outer-core …
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Περιβάλλοντα αποθέσεως των ιζημάτων του Πηδάσου (Ν.Δ. Πελοπόννησος)
… exposure allowed a quantitative study of the lateral variation of faciès and beds to be carried out. The lower beds are sandy and clayey silts interbedded with conglomerate and are probably alluvial fan deposits. Overlying is a sei sequence of marine faciès, mostly deposited in a lagoon. Silty …
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Seismic attenuation of regional phases in the northern Middle East and the Tibetan Plateau
… Q is typically assumed as the intrinsic Q, whose lateral variation suggests temperature structure of the crust and the uppermost mantle. In the northern Middle East, large varations in regional phase Q models are observed, such as low Q within the Anatolian Plateau and high Q within much of the …
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Quasiparticle bound states in normal metal/superconductor structures probed by scanning tunneling microscopy
… we are able to characterize the vertical and lateral variation of the pair potential $\Delta$ inside the superconductor. We find that a severe suppression occurs which is beyond the conventional theory. We believe that this effect arises from the short coherence length of the superconductor, …
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Stress and strain rate estimates associated with penetrative deformation of the Harkless quartzite aureole rocks, Papoose Flat Pluton, California/Using structure contour maps to analyze subsurface 3D fault geometry along segments of the Moine Thrust
… The structure contour map indicates significant lateral variation in fault geometry along the Moine thrust, with recesses associated with antiformal corrugations in the subsurface and salients characterized by planar geometries or broad synformal corrugations. Additionally, structure contour maps …
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Coordinate system dependence of muscle forces predicted using optimization methods in musculoskeletal joints
… that moving the joint center medially and laterally along the flexion-extension axis caused dramatic variations in the predicted muscle forces. For example, moving the joint center from a position 5 mm medial to 5 mm lateral of the geometric elbow center caused the predicted biceps force to …
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Ambient noise tomography for wavespeed and anisotropy in the crust of southwestern China
… southeastern Tibetan Plateau; however, the large lateral variation of both wavespeeds and anisotropy indicates that the flow also varies greatly in intensity and pattern in different geological units.
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Variable Viscosity Thermal Convection at Infinite Prandtl Number in a Thick Spherical Shell
… influence controlling the flow characteristics--lateral variation of viscosity plays a secondary role. Both a high viscosity lid and a viscosity increase below 660 km depth provide a general shift to lower harmonic degrees in both thermal anomalies and kinetic energy. With non-Newtonian rheology, …
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Microfacies Analysis, Sedimentary Petrology, and Reservoir Characterization of the Sinbad Limestone Based Upon Surface Exposures in the San Rafael Swell, Utah
… permit detailed analysis of its vertical and lateral reservoir heterogeneity. Vertically, the Sinbad Limestone comprises three facies associations: (A) a basal storm-dominated, well-circulated skeletal-oolitic-peloidal limestone association, (B) a storm-dominated, poorly-circulated hummocky …
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Time and soil development on lateral moraines, Martin River Glacier, south-central Alaska
… 1966, eighteen soil profiles on a series of 21 lateral moraines, were studied to ascertain the relationship of time to soil development. The moraines are located on Charlotte Ridge on the south margin of the Martin River Glacier in south-central Alaska. The elevation of the highest moraine is …
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Gravitational Study of the Hastings Salt Dome and Associated Faults in Brazoria and Galveston Counties,Texas
… gravimeter, which is an instrument that measures variations in gravitational attraction over the surface of the earth. Five hundred and thirty-seven gravity readings (including base station readings) were collected along roads and accessible routes in the study area by using a CG-5 Scintrex …
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Ice dynamics and glacial history from remote sensing of the Seno Skyring-Seno Otway-Strait of Magellan region, southernmost Patagonia
… the characteristic shape, dimensions and abrupt lateral margin of the flow-set, the lateral variation in lineation length and elongation ratios, and the presence of a potentially-deformable bed, these lineations are interpreted as being diagnostic of a terrestrial palaeo-ice stream. It is …
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3D modeling and characterization of hydraulic fracture efficiency integrated with 4D/9C time-lapse seismic interpretations in the Niobrara Formation, Wattenberg field, Denver Basin
… mechanical issues that affect production from lateral wells, the variability in production performance and reserve recovery along multistage lateral shale wells is controlled by the reservoir heterogeneity and its consequent effect on hydraulic fracture stimulation efficiency. Using identical …
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Surface Wave Analysis in Laterally Varying Media
… estimation of the S-wave velocity behaviour in laterally varying media. The surface wave method, in fact, can be effectively adopted for different purposes and at different scales, but I focused on the geo-engineering and geotechnical applications of surface wave analysis and also on the …
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Generalized detailed balance theory of solar cells
… inhomogeneity, which may lead to a detrimental lateral variation of the band gap. The EL measurements show that there is no significant inhomogeneity in high efficiency samples. In case of multijunction solar cells, EL measurements give access to the internal voltages of the individual subcells …
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Anatomy of a Carboniferous transgression: upper Tullig Cyclothem, County Clare, Ireland
… in County Clare, which show considerable lateral variation from north to south. One complete section of the transgressive Tullig is exposed at Trusklieve, where the sedimentary infill begins at the top of the fluvio-deltaic sandstone channels of the Tullig Sandstone. At this point, …
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Heat loss and hydrothermal circulation due to sea-floor spreading
… heat transfer efficiency of a convection system. Lateral variation in permeability or the systems bottom boundary condition will also influence the position of cells. Even if the circulation system were strongly influenced by some combination of variations in the strength of the heat source, …
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An Investigation of Target Poisoning during Reactive Magnetron Sputtering
… to move the magnetron vertically and thereby the lateral investigation of the target surface. During magnetron operation the inert and reactive gas flow were adjusted using mass flow controllers resulting in an operating pressure of about 0.3 Pa. The argon flow was fixed, whereas the nitrogen flow …
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