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.
Results
Showing 1 to 9 of 9 for “"Shear Velocities"”.
-
Structure and dynamics of the Pacific upper mantle
… ray approximation. The model parameters include shear-speed variations throughout the mantle, perturbations to radial shear-wave anisotropy in the uppermost mantle, and the topography of the 410 and 660 discontinuities. We construct vertical tomograms through two mantle corridors: one between the …
-
Multiphase Microfluidics for Convective Heat Transfer and Manufacturing
… for these instabilities is the difference in shear velocities which causes waves to propagate at the interface. With the correct geometric configuration this phenomena will lead to droplet break up. Second, liquid-gas interfaces can enhance heat and mass transfer. If air bubbles, larger than …
-
Brillouin studies of diopside and H2O
… compositional dependence of Cij values or the shear modulus near end-member diopside composition is observed. In chapter 2, we further investigate the elastic properties of diopside at high pressure using a diamond anvil cell. The single-crystal elastic constants of diopside have been measured …
-
The study of shear and longitudinal velocity measurements of sands and cohesive soils
… of bender element technology in obtaining the shear modulus. The experimental program consisted two primary stages. The beginning part of the experimentation was concerned with evaluating the behavior of bender elements, both free-standing and when applied to soil. For this case, experiments …
-
Non-destructive quantitative assessment of oxidation in aged and rejuvenated asphalt concrete pavements using a non-collinear wave mixing approach
… acoustic parameters, i.e., dilatational and shear velocities and attenuations, of asphalt concrete specimens with various levels of oxidative aging were characterized. In non-collinear wave mixing, two waves are propagated so that they cross paths. Under the right conditions, these two waves …
-
Turbulent combined wave-current boundary layer model for application in coastal waters
… impossible without correct current velocity and shear stress information. A combined wave-current boundary layer theory is necessary to predict these quantities, and while the previous Grant-Madsen type boundary layer models are effective, they inconsistently apply a discontinuous two layer eddy …
-
Surface Wave Derived Shear Velocity Structure of the Gamburtsev Subglacial Mountains, Transantarctic Mountains, and West Antarctica and Shallow Seismicity of the Mariana and Tonga Subduction Zones
Recent advances in seismic instrumentation have allowed researchers to undertake focused investigations of regions previously inaccessible. From the bottom of the sea to the coldest, driest places on earth, we are now able to deploy seismometers to remote locations and be certain of collecting …
-
Lagrangian observations and numerical modelling of hydrodynamics, turbulence, and sediment transport in a tidal river
… of multiple physical processes controlling velocities, salinities, mixing, and sediment transport. As such, accurate numerical modelling of the hydrodynamics and sediment movement in these regions can prove challenging. However, it is essential to address this challenge as models are now …
-
Density, magnetic properties and sound velocities of iron-rich materials at high temperature and high pressure
… compounds, including the density and sound velocities, with the observed values of inner core, e.g., the values in preliminary reference Earth model (PREM) determined using normal mode data and seismic travel time data. In this work, I studied the density, elasticity, sound velocity and …