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Publications (82)
Flooding is a prevalent and growing problem involving significant economic losses worldwide. Traditional flood mitigation measures are based on the use of levees, dams, dredging, and river channelization, which can distort the perception of risk, leading to a false sense of security that can induce an increase in the occupation of flood-prone areas...
Hydrological variables frequency analysis is crucial for designing and operating hydraulic infrastructure. The Gumbel distribution is commonly used to model extreme events like floods. This study investigates the Whale Optimization Algorithm (WOA) use, a metaheuristic inspired by humpback whale hunting, to estimate the parameters of the Gumbel dist...
The aim of this study was to investigate the existence and the magnitude of trend in different areas and durations of TCR. To achieve this objective, a mixed-method approach was employed using depth–area–duration and areal reduction factor (ARFs) curves that can be described as a logarithm equation to generate time series that allows the applicatio...
The guide curves are tools that specify rules for dam operation that allow reducing the chances of unwanted spill or deficit events. In this research, we analyzed the importance of using guide curves and penalizing the deviation of such curves by the occurrence of surplus volume, or deficit, using optimization tools on an objective function that ap...
This paper focuses on calculating the monthly anomaly of precipitation using a straightforward methodology based on average monthly values and drought categorization. The specific case study conducted in this study pertains to the Papalotla River subbasin, which is a part of the Texcoco Lake basin. The research findings reveal that anthropogenic ac...
Stochastic Dynamic Programming (SDP) has been used to solve reservoir management problems in different parts of the world; specifically in Mexico, it has been used to obtain operating policies that optimize a given objective function. By simulating the operation of the system with a comprehensive model, the behavior of such policies can be accurate...
A rainfall regionalization method based on variation coefficient was applied with a variant in the construction of flash flood hyetographs with several return periods using the flash flood shape of the historical event that occurred in September 2021 in the Tlalnepantla River basin, Mexico, that caused severe damage to population and its infrastruc...
Pumped-storage hydroelectric plants are an alternative to adapting the energy generation regimen to that of the demand, especially considering that the generation of intermittent clean energy provided by solar and wind power will cause greater differences between these two regimes. In this research, an optimal operation policy is determined through...
The objective of the present study was to develop a genetic algorithm capable of establishing optimal operating policies for monthly extractions from the three main reservoirs of the Cutzamala System, which supply drinking water to the Mexico City metropolitan area. In previous studies, annual water extraction defined with an annual Z curve in term...
Precipitation anomalies are defined as the difference between a certain value and the same value in its normal conditions (average). In climatology, normal conditions involve a period of at least 30 years of continuous observations. However, with satellite remote sensing data it is possible to estimate anomalies of any variable of interest, regardi...
Objectives
To evaluate the effectiveness of an evaporation reduction method in which the greater part of the water surface was covered with PET-type plastic bottles. The capacity of this method to diminish natural evaporation was compared to water aeration, water recirculation, and the control (without intervention). With evolutionary computation,...
En este estudio se obtuvieron políticas de operación del tipo curvas Z, usando dos métodos de optimización: el de gradiente reducido generalizado (GRG) no lineal y un algoritmo genético (AG) simple, y se aplicaron a un sistema de aprovechamiento hidráulico localizado en la cuenca del lago de Cuitzeo, que juega un papel importante en el abastecimien...
Multiple factors control the flow distribution in a river bifurcation. However, one factor that requires further analysis is the effect of upstream reservoirs. Such is the case of the bifurcation of the Mezcalapa River into the Samaria and Carrizal rivers located in the lowlands of the Grijalva River basin, Mexico. Four dams were commissioned in th...
This study aimed to apply the Markovian Model (MM) to obtain optimized operating rules for a hydropower reservoir to maximize its efficiency. In this study, a Markovian Control Model with continuous state space (MCM-CSS) is presented to analyze the climatological effects through stochastic integrals. The MCM-CSS compute the optimal policies of hydr...
In this study, operation policies were obtained for a reservoir in Michoacán, Mexico, used for irrigation and domestic water supplies. The main purpose of these policies is to optimize the uses of the water, an increasingly scarce resource everywhere. Two optimization methodologies were used; stochastic dynamic programming, that provides release de...
p class="Resumen">El presente trabajo tiene como objetivo el planteamiento de ecuaciones estocásticas para la resolución de los niveles de embalse de un sistema hidroeléctrico que opera en cascada a través de 2 presas, en los meses posteriores a la época de lluvias, específicamente, los meses de noviembre y diciembre. A partir de los modelos de con...
To design and review the operation of spillways, it is necessary to estimate design hydrographs, considering their peak flow, shape and volume. A hybrid method is proposed that combines the shape of the design hydrograph obtained with the UNAM Institute of Engineering Method (UNAMIIM) with the peak flow and volume calculated from a bivariate method...
This paper presents a case study to apply the concepts of numerical integration which is a useful concept in the engineering basic sciences. The storage volume in a reservoir was obtained using Newton´s numerical integration schemes (Trapezoidal rule, Simpson 1/3 and Simpson 3/8) from data of flood routing by the dam “Las Cruces”, an hydroelectric...
Domínguez, R., Carrizosa, E., Fuentes, G. E., Arganis, M. L., Osnaya, J., & Galván-Torres, A. E. (enero-febrero, 2018). Análisis regional para estimar precipitaciones de diseño en la república mexicana. Tecnología y Ciencias del Agua, 9(1), 5-29. 10.24850/j-tyca-2018-01-01.
En este artículo se presenta un análisis regional de las lluvias diarias m...
A new procedure for maximum annual floods regionalization in hydrometrical stations belonging to 37 hydrologic regions of the Mexican Republic is introduced in this study. The selected stations measures runoff of basins free of reservoirs or regulation lakes upstream. The relative method's simplicity allows its application in case of ungauged basin...
A new procedure for maximum annual floods regionalization in hydrometrical stations belonging to 37 hydrologic regions of the Mexican Republic is introduced in this study. The selected stations measures runoff of basins free of reservoirs or regulation lakes upstream. The relative method's simplicity allows its application in case of ungauged basin...
En este estudio se obtuvieron coeficientes de escurrimiento para tormentas asociadas a distintos periodos de retorno a partir del análisis estadístico de la precipitación y del escurrimiento y a partir del método del número de curva. Para ello se analizaron cerca de 100 cuencas en distintos sitios de México que contaban con más de 20 años de regist...
El objetivo del trabajo es obtener políticas de operación para un embalse que tomen en cuenta los requerimientos de las dos agencias federales en México encargadas del manejo de los sistemas de almacenamiento de agua para generación de energía eléctrica, con objeto de garantizar por una parte, los mayores beneficios por generación y por otra los me...
Large dams require not only the definition of peak flow but also description of the shape of the hydrograph because both aspects are considered in the design and operation of the spills. There are several methods to do this, but these are subjective and questionable, and rely on the time-base definition of the design hydrograph, and on the historic...
The evolutionary computing algorithm of genetic programming (GP) was applied to obtain mathematical daily rainfall interpolation models in one climatologic station, using the measured data in nearby stations in Cutzamala River basin in Mexico. The obtained models take into account both the geographical coordinates of the climatologic station and al...
Tradicionalmente, para obtener los parámetros de una función de distribución con el método de máxima verosimilitud se acostumbra igualar a cero la derivada del logaritmo de la función de verosimilitud y resolver el sistema de ecuaciones no lineales que resulta. La popularidad del procedimiento se debe a su sencillez; sin embargo, cuando la función...
En este artículo se compararon registros sintéticos de longitud más larga que los registrados históricamente para el Índice de Oscilación del Atlántico Norte. Los registros sintéticos se obtuvieron utilizando el método de intercambio de años de Grinevich y el método de fragmentos de Svanidze, así como el método de Fiering. Los registros generados s...
A method based on daily rainfall disaggregation was applied to generate storm events with spatial and temporal distribution. Information recorded in 49 rain-gauges of a network located in the Basin of Mexico within the period from 1988 through 2006 was used. The proposed method has an easy implementation; it preserves properly the statistical chara...
Optimal operating policies for hydropower generation in a system of dams were obtained by means of a modified algorithm of stochastic dynamic programming that incorporates the guiding curve concept and other operating requirements defined by the Mexican agency in charge of electricity generation. These operating policies were used to simulate the l...
This document summarizes the results of a research whose objective was to express some considerations about the formation in values at the mid-superior level. Some proposals about the topic such as Jean Piaget's and Kohlberg's are included extrapolating them in their application to the current times. The design of the investigation was based on a d...
In the last twenty five years, digital tools has been with no doubt a support in teaching civil Engineering topics; in this work some of them are remarked, related with hydrology concepts and we emphasize the importance of having a balance given such topics based on the traditional education style so that the student achieves a deep learning of the...
Hydrological risk analyses require a dense pluviometer network and a
long period of records with an adequate time resolution; usually
pluviometer networks have short periods of simultaneous records, so it
is required to extend the number of records by means of synthetically
generated rainfall events. This paper describes the development and
impleme...
This investigation evaluates the effects of hydrological uncertainty in the results of flood extent estimates during the incidence of a tropical storm. For this, the methodology is comprised of field measurements, elevation data, a distributed hydrological model and a standard 2D numerical model. Uncertainty is considered in the distributed hydrolo...
This paper deals with the calculation of a set of inflow and volume values for several return periods for the hydrometric station Huites, Sinaloa, Mexico, by means of the numerical closed and open methods to find the roots for an equation; in this case the bisection algorithm and the Secant method, respectively. The bivariate distribution function...
Numerical analysis data in engineering needs the use or development of software that allows creating the graphical representation of functions, among other calculations. In this article a step by step use of Visual Basic 6® and the control PictureBox® are presented as helping tools to draw one or more series in the same graphic, with the same or di...
Numerical analysis data in engineering needs the use or development of software that allows creating the graphical representation of functions, among other calculations. In this article a step by step use of Visual Basic 6® and the control PictureBox® are presented as helping tools to draw one or more series in the same graphic, with the same or di...
A first procedure to generate synthetic storms, which preserves the statistical characteristics of the historical daily precipitation events registered in 49 stations located within the basin of Mexico City is presented. This procedure (a variation of the Svanidze method) implicitly supposes that the correlation between the maximum rainfall and its...
This paper deals with the calculation of a set of inflow and volume values for several return periods for the hydrometric station Huites, Sinaloa, Mexico, by means of the numerical closed and open methods to find the roots for an equation; in this case the bisection algorithm and the Secant method, respectively. The bivariate distribution function...
Recorded solar radiation at minute ti has its influence on water temperature at instant ti+160 [1] and such a gap needs to be taken into account for all considered data. For example, the first data point of the dependent variable, ten minute average water temperature at instant ti+160, was coupled with the first data point of the independent variab...
Interest in sustainable development for the natural, socio-economic and cultural resources of
coastal zones is growing worldwide. On the other hand, the range of threats to coastal zones
increasingly posed by hydro-meteorological natural phenomena has led to a trend in the
analysis and assessment of risks to these areas. The available literature de...
Dynamic Programming (DP) is an optimization procedure developed in the 1950s by Richard Bellman (Bellman, 1957). It is a mathematical tool that has been applied in several fields, including engineering, artificial intelligence and economics, among others (Dormido et al., 2002). The area of water resources planning is no exception and applications w...
Dynamic Programming (DP) is an optimization procedure developed in the 1950s by Richard Bellman (Bellman, 1957). It is a mathematical tool that has been applied in several fields, including engineering, artificial intelligence and economics, among others (Dormido et al., 2002). The area of water resources planning is no exception and applications w...
In this article a procedure is presented to obtain a square order-three matrix A given its characteristic equation, by means of Krylov's method, that traditionally performs the opposite problem. Finally, the elements of matrix A are found by solving a nonlinear equation system.
The estimation and review of discharge flow rates in hydraulic works is a fundamental problem in water management. In the case of dams with large regulating capacity, in order to estimate return periods of discharge flow rates from the spillways, it becomes necessary to consider both peak flow and volume of the incoming floods. In this paper, the r...
A wall break simulation of a cooling tank in a thermoelectric plant was performed using two methods: The CARPA software (finite volume) in GiD environment and a 2D program (finite differences). The software CARPA applied with the GiD pre and post processor showed to be a powerful tool in animating the flood plans, with purposes related to interpret...
This paper presents the application of genetic programming to the generation of models to assess the total runoff of a basin starting from the total rainfall in it and using data recorded in a sub-basin at the valley of Mexico (the Mixcoac sub-basin to the west of Mexico City). The modelling process is developed contrasting two types of models with...
En este documento se presenta la simulación de la ruptura de la presa del proyecto hidroeléctrico La Parota, Guerrero, México, usando el programa CARPA, que se basa en un modelo de flujo bidimensional de alta resolución del tipo WAF-TDV (flujo ponderado y variación total
decreciente), en volúmenes finitos. Con los resultados obtenidos es posible el...
Traditional methods, autoregressive moving average models ARMA(p,q), Fiering, Svanidze, among others, have been successfully used in estimating hydrological time series such as flows, inflow volumes to reservoirs, series with a winter component, precipitation; nevertheless, their application to mean average sea surface temperatures (SST) in three r...
El contenido de material en suspensión en los cauces está estrechamente relacionado con los caudales y los aportes de sedimentos arrastrados por los escurrimientos superficiales de las laderas de las cuencas generados durante los períodos de tormentas. En este trabajo y como una línea de investigación, se utilizaron datos anuales y mensuales de las...
In this paper ouflow hydrographs of a dam breach were obtained by means of a reservoir numerical flood routing algorithm which takes into count the variations in the width of the breach and the height of the dam; the obtained outflow hydrographs were considered for three different situations; finally these hydrographs were used as input data in a w...
In this paper synthetic monthly series of net basin inflows in four dams were generated; there are correlations and crossed correlations in historic series; Svanidze's modified method was applied, adding a different way in the random selection of years including the fact that the net basin inflows distribution was influenced by winter events. Stati...
In this paper synthetic monthly series of net basin inflows in four dams were generated; there are correlations and crossed correlations in historic series; Svanidze's modified method was applied, adding a different way in the random selection of years including the fact that the net basin inflows distribution was influenced by winter events. Stati...
This document presents a dam wall break simulation of the La Parota hydropower project in Guerrero, Mexico, by means of the CARPA system, which is based in a 2D WAF-TVD (Weight Averaged Flux-Total Variation Diminishing) high resolution finite volume numerical scheme. With the results, it is possible to produce maps containing water depth, flow velo...
Recommended by Bryan W. Karney An application of Genetic Programming (an evolutionary computational tool) without and with standardization data is presented with the aim of modeling the behavior of the water temperature in a river in terms of meteorological variables that are easily measured, to explore their explanatory power and to emphasize the...
This paper deals with the operating rules of the Grijalva River hydropower serial system obtained by means of stochastic dynamic programming and its subsequent simulation using historicalrecords and synthetic series. Penalties in spills and deficit were considered in optimum policies. During simulation several restrictions were added to the origina...
A modification of Svanidze's fragments method was applied to generate synthetic samples of monthly inflows to the La Angostura and Malpaso dams, located on the Grijalva River, in the state of Chiapas, Mexico. This modification allows generation of the monthly runoff of several dams in a series and preservation of their cross-correlations. Comparing...
The program Forecast of Runoff Model (MPE) was developed with the intention of
foretelling the runoffs of a river basin by means of a distributed parameters model. The
method used for the production of runoff is based on the method of the Soil Conservation
Service (SCS) with a modification that allows considering the drying of the ground after
a ra...
Se presentan los resultados obtenidos al simular la operación de un sistema de presas de generación hidroeléctrica ubicadas en el río Grijalva, con distintas políticas de operación. Con objeto de comparar el efecto de distintas políticas en situaciones de escurrimientos extremos, se generaron registros sintéticos de escurrimientos mensuales para un...
