Browsing Rice University Electronic Theses and Dissertations by Subject "Geophysics"
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A Method to Compute Three Dimensional Magnetospheric Equilibria with Dipole Tilt and its Application in Estimating Magnetic Flux Tube Volume
(2011)In this thesis we describe a new version of a magnetofriction model, which was developed for computing the magnetospheric equilibrium that includes an arbitrary Earth's dipole tilt and interplanetary magnetic field. We ... 
A new approach to slant stack processing: An Xwindow (OSF/motif) project
(1992)A new definition for slant stack and inversion has been formulated. The different p ranges with different frequencies in the forward slant stack provide accurate reconstruction of the original data. The computing time is ... 
A Paleomagnetic Study of the Permian Basalts at Las Delicias, Coahuila, Mexico
(1970)The Permian lavas and pyroclastics near Las Delicias, Mexico were measured for their natural remanent magnetism in the attempt to obtain a thermoremanent magnetic pole determination for the Permian period from North America. ... 
A unified approach to complex seismic imaging problems
(1991)Two current challenges in seismic imaging are to obtain more detailed images of complex structures from reflection data and to constrain the regional structure of the Earth using wideangle data. These are complex problems ... 
An alternative approach to differential semblance velocity analysis via normal moveout correction
(2010)This thesis develops a new computation of the objective function and gradient for normal moveoutbased differential semblance (DS). The DS principle underlies a class of algorithms for seismic velocity analysis. The simplest ... 
Analysis of the application of collision cross sections and ion neutral reaction rates in the upper atmosphere modeling
(2000)Review and analysis of atomic collision data (such as collision cross sections and ionneutral reaction rates) used in the upper atmospheric modeling for Earth and other planets are presented. This work gives the first ... 
Approximate inverse scattering using pseudodifferential scaling
(2009)This thesis proposes a computationally efficient method for approximating the inverse of the normal operator arising in the linearized inverse problem for reflection seismology. The inversion of the normal operator using ... 
Approximate MultiParameter Inverse Scattering Using Pseudodifferential Scaling
(2011)I propose a computationally efficient method to approximate the inverse of the normal operator arising in the multiparameter linearized inverse problem for reflection seismology in two and three spatial dimensions. Solving ... 
Automatic characterization of the spatial statistics of topography using geostatistical methods
(2002)An automatic geostatistical method of analyzing spatial characteristics of topography is presented. Anisotropy in spatial continuity is modeled by estimating the range of the directional semivariograms. Spatial characteristics ... 
Average antiplane motion in an elastic solid containing a layer of randomly distributed cracks
(1996)The propagation of antiplane waves in an elastic solid containing a random distribution of cracks that are parallel to each other, and oriented at an arbitrary angle relative to the direction of the incident wave, is ... 
Cenozoic inversion structures in a backarc setting, Western Flores Sea, Indonesia
(1996)A geophysical and geological study utilizing high quality seismic and well log data was undertaken of a marginal basin in the Western Flores Sea, Indonesia, to document the evolution of Paleogene extensional basins and ... 
Computer simulation of stratigraphy
(1994)Simulation of stratigraphy coupled with sequence stratigraphic and backstripping analysis quantitatively defines the timing and magnitude of geologic events, including the history of sediment supply, tectonism and eustasy. ... 
Converted modes in subsalt seismic exploration
(1999)Salt has unusual properties which complicate seismic exploration. A Model study examines some problems encountered in subsalt amplitude analysis and demonstrates that traditional techniques for detecting hydrocarbons and ... 
Crossline migration of threedimensional prestack data
(1996)A new technique for imaging 3D prestack seismic reflection data has been developed. This method approximates the Kirchhoff onepass 3D prestack depth migration and is based on directly splitting the complex onepass ... 
Crustal deformation across the Galicia Bank of offshore Iberia from seismic reflection data: Processing, interpretation, and reconstruction
(2002)The Iberia Margin is an excellent example of a passive rift. MultiChannel Seismic (MCS) data consisting of the Line 14 reflection profile from the 1997 Iberia Seismic Experiment were processed and interpreted. Enhanced ... 
Crustal structure and tectonic evolution: Central California
(1989)Vertical incidence and wide angle seismic data suggest the central California transform margin is underlain at depth by a horizontal detachment surface above which strikeslip and compression occur. The boundary between ... 
Determining the nature of middle and lower mantle heterogeneity using array analyses of teleseismic data
(2008)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 ... 
Diffuse oceanic plate boundaries: Kinematic observations and rheological constraints
(2006)We use a thin viscous sheet model to interpret the observed shortening along a seismic reflection profile collected on the Phedre cruise (on the deforming oceanic lithosphere in the central Indian Ocean). We determine the ... 
Discrete simulations of densitydriven volcanic deformation: Applications to Martian caldera complexes
(2010)We have carried out 2D numerical simulations using the discrete element method (DEM) to investigate densitydriven deformation in Martian volcanic edifices and how it affects the development of caldera complexes. These ...