Browsing Civil and Environmental Engineering - Ph.D. / Sc.D. by Title
Now showing items 765-775 of 775
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Water balance investigations of groundwater depletion in Asia : information needs and uncertainty analysis
(Massachusetts Institute of Technology, 2002)Irrigated agriculture is an essential component of global food production. In many regions of the world, and Asia in particular, groundwater is a major source of irrigation water. Over-pumping of groundwater aquifers has ... -
Water quality and hydrological assessment and modeling of bioretention basins in tropical cities
(Massachusetts Institute of Technology, 2017)The bioretention basin is a form of stormwater best management practice that originated in temperate regions and is becoming increasingly popular in tropical regions. Nevertheless, it is a poorly evaluated system in the ... -
Wave boundary layer hydrodynamics and cross-shore sediment transport in the surf zone
(Massachusetts Institute of Technology, 2009)Coastal erosion and, more generally, evolution of the beach morphology are major coastal engineering problems. Changes in beach morphology mostly occur in the nearshore region, or surf zone. They are caused by the local ... -
Wave motion in finite and infinite media using the Thin-Layer Method
(Massachusetts Institute of Technology, 2002)The Thin-Layer Method (TLM) is a semi-analytical technique that is efficient for wave propagation problems involving partially heterogeneous media. While the method has been used widely for horizontally stratified media, ... -
Wave-current interaction in water of finite depth
(Massachusetts Institute of Technology, 2004)In this thesis, the nonlinear interaction of waves and current in water of finite depth is studied. Wind is not included. In the first part, a 2D theory for the wave effect on a turbulent current over rough or smooth bottom ... -
Wavelet-based multiresolution data representations for scalable distributed GIS services
(Massachusetts Institute of Technology, 2002)Demand for providing scalable distributed GIS services has been growing greatly as the Internet continues to boom. However, currently available data representations for these services are limited by a deficiency of scalability ... -
Wavelets and multirate filter banks : theory, structure, design, and applications
(Massachusetts Institute of Technology, 2004)Wavelets and filter banks have revolutionized signal processing with their ability to process data at multiple temporal and spatial resolutions. Fundamentally, continuous-time wavelets are governed by discrete-time filter ... -
Waves, currents, and sediment transport in the surf zone along long, straight beaches
(Massachusetts Institute of Technology, 2004)This study presents a theoretical model for predictions of near-shore hydrodynamic characteristics and the local sediment transport rate along long, straight beaches. The wave may be periodic or random, the beach may be ... -
Wellbore instability mechanisms in clays
(Massachusetts Institute of Technology, 2011)This dissertation investigates the stability of wellbores drilled in Ko-consolidated clays using non-linear finite element method (FEM) and effective stress soil models to characterize the behavior of clay and unconsolidated ... -
Wind- and thermal-driven air flows and the buoyancy and advection effects on air exchange within urban environments
(Massachusetts Institute of Technology, 2014)Human exposure to air pollutants and thermal stress in urban areas are public health concerns. The year 2008 was the first year when more than half of the human population lived in urban areas. Studies of the urban air ... -
Winter climate response to continental snow anomalies
(Massachusetts Institute of Technology, 2003)Climate variability has emerged in recent decades as an important field of geoscience research. A thorough understanding of the patterns and causes of climate variability is required to predict and prepare for upcoming ...
