The Morley Nelson Snake River Birds of Prey National Conservation Area (NCA) provides breeding sites for raptors in southwestern Idaho. Biologists have been mapping occupied Golden Eagle nest locations in the NCA since the 1960s, but the steep cliffs used by raptors as nesting s…
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Mechanically Stabilized Earth (MSE) walls are used extensively to support various infrastructures. Limit equilibrium (LE) analysis has been used to design MSE walls. Presumably, the deflection of MSE wall can be limited to an acceptable range by ensuring sufficient factor of saf…
The Hunter Creek sandstone near Mogul, Nevada, is a Neogene sedimentary unit in the Verdi basin consisting of fluvial, deltaic, and lacustrine facies. Numerous slope failures have occurred in the unit mostly along streams, canals, and the Truckee River. Field mapping showed that…
An experimental study of the monotonic and cyclic response of Fraser River sand under triaxial loading has been conducted. Effects of a wide range of initial states characterized by the magnitude and the direction of the initial static shear stress level, loading mode, relative …
The 1999 Kocaeli Earthquake (M=7.4) struck northwestern Turkey on August 17, 1999 and caused significant damage in urban areas located along Izmit Bay. The sites that suffered the greatest damages were located primarily in areas of poorest soil conditions, typically containing s…
The Chiricahua National Monument in southeastern Arizona presents several interesting questions to the process geomorphologist. First, why are columnar landscapes characteristic of the tuffs? Air photo analysis reveals that column geometries in both cross section and plan view a…
The Truckee River drainage system from Tahoe City, California to Reno, Nevada presents unique examples of complex slope instability because of the varied and complicated geologic terrane through which river flows. The objectives of this investigation were four fold: (1) Identify…
A mathematical model and computer code have been developed to perform seismic analysis of gravity type bridge abutments supported on piles. The model is capable of conducting linear, geometric nonlinear, material nonlinear and total nonlinear analysis. It has been found that gro…
This dissertation presents a set of new tools for aquifer characterization. Particular emphasis is placed on well test models. A set of novel semi-analytical solutions for flowing wells, pumping tests and slug tests is introduced, with particular attention to the problem of part…
In this thesis, both micro and macro mechanical studies were conducted on an idealized granular assembly under different kinematic and static conditions. The experimental approach involved the use of an analogue granular material composed of an assembly of photoelastic disks in …
Unsupervised classification of hyperspectral images poses several challenges. The increased number of spectral channels provides a more accurate description of the observed data. Unsupervised classification systems that rely solely on the spectral content do not fully exploit th…
Sixty reduced scale model walls, slopes, and embankments were built on weak, firm, and rigid foundations, using kaolin as the cohesive soil reinforced with a non-woven geotextile simulant, and loaded to failure under increasing self-weight in the geotechnical centrifuge. The obj…
The Synthetic Aperture Radar (SAR) sensor is widely used to record ground data under all atmospheric conditions. The high resolution of the SAR images contains useful information about the different ground regions. In this work, Khoros, a data visual language provided the tools …
Food security issues in practice have long been the purview of supply side oriented policy makers. Most of the work on this front progressed on the basis of measuring rainfall deviations, production shortfalls, etc. This research was motivated by the need to develop a comprehens…
This dissertation studies the feasibility of change and damage detection in urban environments using the Synthetic Aperture Radar (SAR) imaging technology. SAR is an active sensor and capable to provide high-resolution images in all weather and all time conditions. It shows prom…
In this dissertation several unresolved issues related to reservoir characterization and simulation techniques are investigated. Geostatistical techniques have not been adequately validated because of scarcity of reference or truth cases for subsurface reservoirs. This study use…
Computerized tomography (CT) has long been used successfully in different areas of science and engineering. X-ray tomography and MRI in diagnostic medicine, and geographical imaging, usually used for characterizing the subsurface of earth, are well-known examples. For experiment…
Fracture toughness is a strength parameter in terms of ease of initiation and propagation of a preexisting crack subjected to some externally applied stress field. Due to high cost involved in field scale testing, laboratory based testing under reservoir simulated conditions of …