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.
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Showing 1 to 20 of 99 for “"rainfall-runoff"”.
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Nonlinear Analysis of the Rainfall-Runoff Process
Made available in DSpace on 2014-12-08T23:57:10Z (GMT). No. of bitstreams: 1 6901417.pdf: 4488055 bytes, checksum: 01460d3270b796e42322f62c1d23cb1a (MD5) Previous issue date: 1968
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A comprehensive modeling approach for urban rainfall - runoff simulation
… model proposed in this work; finally, urban rainfall - runoff simulations were carried out accounting for different spatial and temporal resolutions of rain data and further mitigation effect of rain garden. In pure surface flow modeling, depth-dependent roughness and infiltration methods …
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Calibration of a conceptual rainfall-runoff model using simulated annealing
Simulated annealing (Kirkpatrick et al, 1983) is used to estimate the parameters of a mathematical model that predicts the water yield from a catchment. The calibration problem involves finding the global minimum of a multivariate function that has many extraneous local minima, a situation in which …
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Rainfall-runoff as spatial stochastic processes : data collection and synthesis.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Civil Engineering, 1975
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Calibration of physically-based distributed rainfall-runoff model with radar data
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Formulation and testing of a distributed triangular irregular network rainfall/runoff model
… while the original RIBS model is used to provide runoff and saturated/unsaturated groundwater dynamics in the system. These two base models of tRIBS are described and the modifications to CHILD and RIBS are presented. The CHILD model is modified to accept time varying distributed inputs and a …
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A Basic Study of the Linearity of the Rainfall-Runoff Process in Watersheds
Made available in DSpace on 2014-12-08T23:56:06Z (GMT). No. of bitstreams: 1 6408375.pdf: 7090543 bytes, checksum: 2fe7265722e5ef27bddcccee65e00450 (MD5) Previous issue date: 1964
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Developing and Evaluating the Composite Runoff Index Geographic Model for Urban Rainfall-Runoff Modeling
<p>Urban runoff index estimation, which has traditionally been a time-consuming and labor-intensive process, is a fundamental problem for modeling watershed runoff especially for growing cities that lack stream gages worldwide. The research developed and evaluated the composite runoff index (RIc) …
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The application of a rainfall-runoff model to the Maury River Basin in Virginia
Several rainfall-runoff models were investigated in order to select a precipitation excess generator for an implicit flood routing scheme for the James River. The Maury River basin was chosen for testing the model. Because of ease of application and data requirements, an antecedent precipitation …
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The effects of rainfall runoff from urban and rural watersheds on trihalomethane precursors in streams
… influenced the TOC and THM-precursor loadings in runoff from the watersheds. Fall runoff from Broad Run contributed the highest mass loading. Impoundment was seen to increase the amount of THM precursors downstream of Lake Manassas on Broad Run with the largest difference observed during the fall …
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Rainfall-runoff control: variably saturated transport for an infiltration system controlling water quality and quantity
Rainfall-runoff impacted by anthropogenic activities transports significant quantities of particulate, aqueous and complexed constituents. These diffuse, unsteady and stochastic event-based loadings are unique challenges for water quality and quantity control. The design, water quality and quantity …
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Quantification of wildfire-induced perturbations to soil-water retention curves and their impact on rainfall runoff
… of wildfires can cause elevated post-fire rainfall-runoff and debris-flow hazards in and around steeplands. Improved prediction of the severity and spatial extent of post-fire increases to these hazards requires understanding which soil properties are most strongly affected by wildfire and …
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Snowmelt and rainfall runoff in burned and unburned catchments at the intermittent-persistent snow transition, Colorado Front Range
… changes to the hydrologic processes that drive runoff production made by wildfire are not clearly understood. This research examines how wildfire affects the timing and magnitude of runoff production from snowmelt and rainfall by comparing four catchments in and near the High Park Fire area, two …
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Rainfall-runoff changes due to urbanization: a comparison of different spatial resolutions for lumped surface water hydrology models using HEC-HMS.
… the different sub-watershed resolutions for four rainfall events. Calibration results indicate using the smaller spatial resolutions improves the model results. Different scenarios for land cover change were evaluated for all resolutions using both models. As land cover change increased, the …
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Modeling event-based coupled hydrologic and mass transport in small urban watersheds
… several methodologies were developed. Discrete rainfall-runoff events data were collected at two similar urban watersheds for model calibration and verification. A mathematically and physically-based criterion was proposed to differentiate rainfall-runoff events between either mass-limited or …
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Calibração automática de modelos tipo chuva-vazão utilizando técnicas de suavização: uma aplicação ao modelo SMAP-II
… calibration have been applied to conceptual Rainfall-Runoff modelling, but several problems have been detected, which have motivated many researches. This work examines the possibility of using Quasi-Newton type (second derivative-based) optimization algorithm for calibration of conceptual …
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Comparação de dois métodos de otimização em modelos hidrológicos do tipo chuva-vazão
In the use of conceptual rainfall-runoff models we frequently face difficulties in the estimation of parameters. The automatic calibration using optimization algorithms has been a valuable alternative instrument due to the efficiency in the calibration process and the quality obtained in the …
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Development and evaluation of a watershed-scale hybrid hydrologic model
… spatially distributed short- and long-term rainfall runoff generation and routing using relatively simple methodologies and state-of-the-art spatial data in a GIS environment. In Distributed-Clark, spatially distributed excess rainfall estimated with the SCS curve number method and a …
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Modeling the hydrologic and particulate loadings from paved urban surfaces
… non-colloidal particulate matter found in urban rainfall-runoff and urban snowmelt. Three forms of the power law model (PLM) were used to model particle number density. It was found that significant model error could be introduced into PLMs when the median diameter particle was used to estimate …
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