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Hydrology Days

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https://hdl.handle.net/10217/199983
Each year the American Geophysical Union "Hydrology Days" meeting brings together water scientists, researchers, and students to discuss the current state of the science and latest water-related research findings. Digital copies of the meetings from 2000-2018 may be found here. Digital copies of the meetings from 2019- are published in issues of the Colorado Water Center newsletter.

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Browsing Hydrology Days by Author "Araújo, Juliana Alencar Firmo de, author"

Now showing 1 - 2 of 2
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    Application of the fuzzy theory in a reservoir operation model, to study the behavior of the regularized flow
    (Colorado State University. Libraries, 2013) Santos, Silvia Helena, author; Sales, Raquel Jucá de Moraes, author; Araújo, Juliana Alencar Firmo de, author; Souza, Raimundo Oliveira de, author; Colorado State University, publisher
    This work concerns with the application of Fuzzy Theory in the hydrologic system as a reservoir, to evaluate its forecast capacity, in the calculation of the risk of collapse of systems composed by this type of body of water. In the development of the research, a methodology, transforming the equations of the hydrologic balance, in fuzzy equations, was applied. The flow and the income net were calculated, for different sceneries, as membership functions, where those control variables, with larger pertinence degree, were analyzed. The results showed that the methodology fuzzy could come as an important alternative in the calculation of the risk of collapse of hydrologic systems, as well as, it can, equally, come as a good alternative in the determination of the sustainability of water, in areas with high vulnerability degree, as it happens in semi-arid regions.
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    The application of fuzzy set theory in the Saint Venant's equations to study the flood wave propagation in the Potengi River, Rio Grande do Norte - Brazil, through the calculation of the flow as membership functions
    (Colorado State University. Libraries, 2013) Sales, Raquel Jucá de Moraes, author; Araújo, Juliana Alencar Firmo de, author; Santos, Silvia Helena, author; Souza, Raimundo Oliveira de, author; Colorado State University, publisher
    A mathematical model based on the equations of hydrodynamics combined with the fuzzy set theory was formulated, for the flood wave propagation in natural rivers. The model is able to evaluate the behavior of the control variables as membership functions. For the solution of the model governing partial differential equations, the Finite Difference Method was used, and for the solution of the resulting system of nonlinear algebraic equations, the Newton-Raphson Iteration Method was used. The results show that the use of Fuzzy Set Theory in the Hydrodynamic model could be an available alternative to determination of the uncertainty and to the Fuzzy Risk Analysis in the flood wave propagation.