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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 41 for “"rainfall intensity"”.
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Joint probability distribution of rainfall intensity and duration
Intensity-duration-frequency (IDF) curves are widely used for peak discharge estimation in designing hydraulic structures. The traditional Gumbel probability method entails selecting annual maximum rainfall depths (intensities) conditioned on a fixed time window width (which in general will not …
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Effects of Mulch and Rainfall Intensity on Crust Strength of Three Illinois Soils
Made available in DSpace on 2014-12-17T23:49:54Z (GMT). No. of bitstreams: 1 9305646.pdf: 5426325 bytes, checksum: d88f58dfb51975c438491973e74eb727 (MD5) Previous issue date: 1992
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Estimation of rain attenuation on earth-space millimeter wave communications links
… computes attenuation as a function of point rainfall intensity for a given frequency, path elevation angle, and earth station latitude and altitude. Estimates of the attenuation distribution can be made by coupling the model with a cumulative rainfall intensity distribution. In addition to …
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Flexible spatial interpolation and uncertainty quantification : with applications in radar rainfall estimation.
… resolution, but do not measure ground level rainfall intensity, which is the quantity of interest. To account for the error resulting from the use of a proxy variable, predictions are calibrated to ground level measurements of the rainfall intensity rate with spatial prediction methods. For …
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A study of storm losses using a laboratory catchment under computer-controlled simulated rainfall
… development of a laboratory catchment and rainfall simulator is described. The rainfall simulator enabled the reproduction of rainfall of any intensity between 0 and 120mm/hr, with properties similar to those of natural rainfall. The rainfall simulator was subsequently linked to a process …
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Pluviosidade crítica e aspectos agravantes de deslizamentos nas encostas da Cidade do Rio de Janeiro - período de 1998 a 2002
Analyzes the effects of rainfall in the landslides in the city of Rio de Janeiro for the years of 1998 to 2002 and the results compared to those from the years of 2010 to 2012. These results show that the rainfall events are the predominant cause of landslides; however, they are not the only …
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Transformation of Rainfall by Plant Canopy (Erosion)
… is influenced by plant cover over the soil. Rainfall characteristics which are transformed as a result of interception by plant canopy and which are important factors in models of splash detachment are drop size, drop velocity and rainfall intensity. The influence of plant canopy on drop size …
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Extreme rainfall intensities and long-term rainfall risk from tropical cyclones
… a methodology for the frequency of extreme rainfall intensities caused by tropical cyclones (TCs) in coastal areas. The mean rainfall field associated with a TC with maximum tangential wind speed Vmax, radius of maximum winds Rmax, and translation speed Vmax, is obtained using a …
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The Areal Reduction Factor (ARF) : a multifractal analysis
… D, 7) is the ratio between the area-average rainfall intensity over a duration D with return period T and the point rainfall intensity for the same D and T. Besides depending on A, D and possibly T, the ARF is affected by the shape of the basin and by a number of seasonal, climatic and …
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Patterns of water table dynamics and runoff generation in a watershed with preferential flow networks
… such as hillslope subsurface flow, rainfall intensity, water table level, hillslope length, and antecedent condition. The results showed that preferential flow made up a large percentage of the subsurface flow from the gauged hillslope. Flow velocities as measured by tracers were …
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Lie Analysis for Partial Differential Equations in Finance
… are priced considering weather variables such as rainfall, temperature, humidity and wind as the underlying asset. Some recent researches suggest to model the amount of rainfall by considering the mean reverting processes. As an example, the Ornstein Uhlenbeck process was proposed by Allen [3] to …
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The use of a distributed hydrologic model to predict dynamic landslide susceptibility for a humid basin in Puerto Rico
… precipitation data that included a synthesized rainfall event likely to result in a landslide based on rainfall intensity-duration thresholds. The basin's response was assessed mainly in terms of soil moisture and values of selected vegetation parameters, which served as the dynamic inputs into …
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Short-term rainfall prediction using a multifractal model
… to predict multifractal measure of temporal rainfall intensity by using Kalman filter, and gives some examples of prediction for generated rainfall. The model for the rainfall generation proposed here is established using a continuous-time, discrete-scale lognormal cascade (CLC) with AR(1) …
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Identification and simulation of extreme precipitation using a computationally inexpensive methodology
… which has complex topography where extreme rainfall is not well predicted. As this methodology is computationally relatively inexpensive, it has applicability to regions of the world where these resources are limited, more especially Africa where the state of climate science is poor. An …
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The coupled development of terrain and vegetation : the case of semiarid grasslands
… dynamics, seasonality of the solar forcing and rainfall, spatial variability of the incidence angle of solar radiation, and intrastorm variability of rainfall intensity.
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Contaminant removal from impervious pavements and its relationship with raindrop impact energy, cumulative kinetic energy of rainfall events, and rainwater pH
… impact energy, cumulative kinetic energy of rainfall events, and rainwater fit were evaluated. A commercial urban area was chosen to perform simulated rainfall experiments. The runoff from these experiments was collected and analyzed for total suspended solids, volatile suspended solids, …
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Applications of GIS in hydrologic modeling
… both spatial and temporal transformation of rainfall into stormflow. A good agreement between simulated and observed stormflow hydrographs was achieved when the model was tested using real data from Jamieson Creek, a well gaged and forested watershed in North Vancouver. Applications of this …
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Il ruolo della vegetazione sui processi idrologici di ecosistemi Mediterranei in condizioni idriche limitanti
… management. For this purpose a 4 m by 4 m rainfall simulator was designed, constructed, and tested as the first stage of this research. The rainfall simulator consisted of four independent lines of low-cost pressure washing nozzles operated at a pressure of 80 mbar, with the number of …
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Time characteristics of small watersheds in response to the probable maximum precipitation
… of Probable Maximum Precipitation (PMP) level rainfall events on the Loss Lake watershed in southcentral Missouri. Overland flow was simulated using kinematic wave routing and channel flow was simulated using dynamic wave routing.</p> <p>Lag time was defined as the time between the centroid of …
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Soil burn severity and climatic analysis of post-wildfire soil hydraulic properties from across the western continental United States
Rainfall infiltration into soil is a key factor in both landscape development and generation of rainfall-runoff hazards like flash flooding and debris flows in recently burned areas. However, infiltration capacity is spatially and temporally variable, which makes its prediction challenging, …
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