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Determining the nature of middle and lower mantle heterogeneity using array analyses of teleseismic data
The structure of the Earth's lower mantle has key implications to the distribution of potential mantle reservoirs and the dynamics of mantle convection. To characterize the nature of mantle heterogeneity, three teleseismic ...
Redox state and water content in the upper mantle: Linkages to the atmosphere, hydrosphere and continents
Geochemical and petrologic tools were deployed to investigate the redox state and water content of the earth's upper mantle. Study results are discussed in the context of their linkages to the atmospheric oxygen level, ...
Improved 3-D Models of Seismic Velocity and Density for the Island of Hawaii: Implications for Volcano-tectonics
Improved 3-D models of P-wave velocity and density are presented for better understanding of volcano-tectonic processes around the Island of Hawaii. The summit and upper rift zones of Kilauea are underlain by high-velocity ...
Stability of one-dimensional waves in layered media
This thesis presents an interpretation of a result on the stability of waves in layered media with respect to Webster's horn equation and travel-time velocity as a parameter The stability property of waves is related to ...
The nonlinear differential semblance algorithm for plane waves in layered media
This thesis proposes an alternative approach to the output least-squares (OLS) seismic inversion for layered-media. The latter cannot guarantee a reliable solution for either synthetic or field data, because of the existence ...