Recursos de colección

Archivo Digital UPM (122.777 recursos)

This is an institutional repository providing access to the research output of the institution. Primarily contains thesis.

Materia = Hidrología

Mostrando recursos 1 - 20 de 92

  1. Fully Stochastic Distributed Methodology for Multivariate Flood Frequency Analysis

    Flores Montoya, Isabel; Sordo Ward, Álvaro Francisco; Mediero Orduña, Luis Jesús; Garrote de Marcos, Luis
    An adequate estimation of the extreme behavior of basin response is essential both for designing river structures and for evaluating their risk. The aim of this paper is to develop a new methodology to generate extreme hydrograph series of thousands of years using an event-based model. To this end, a spatial-temporal synthetic rainfall generator (RainSimV3) is combined with a distributed physically-based rainfall?runoff event-based model (RIBS). The use of an event-based model allows simulating longer hydrograph series with less computational and data requirements but need to characterize the initial basis state, which depends on the initial basin moisture distribution. To overcome...

  2. Extension of Observed Flood Series by Combining a Distributed Hydro-Meteorological Model and a Copula-Based Model

    Requena Rodríguez, Ana Isabel; Flores Montoya, Isabel; Mediero Orduña, Luis Jesús; Garrote de Marcos, Luis
    Long flood series are required to accurately estimate flood quantiles associated with high return periods, in order to design and assess the risk in hydraulic structures such as dams. However, observed flood series are commonly short. Flood series can be extended through hydro-meteorological modelling, yet the computational effort can be very demanding in case of a distributed model with a short time step is considered to obtain an accurate flood hydrograph characterisation. Statistical models can also be used, where the copula approach is spreading for performing multivariate flood frequency analyses. Nevertheless, the selection of the copula to characterise the dependence...

  3. Plan de mitigación de inundaciones en Bajos de Haina (República Dominicana)

    Moraleda Mesa, José Antonio
    Este Trabajo Fin de Máster se basa en la mitigación de inundaciones en tres barrios de Bajos de Haina, un municipio cercano a Santo Domingo, capital de la República Dominicana. Antes de proponer soluciones, se ha llevado a cabo un análisis y diagnóstico exhaustivo de la zona de proyecto. Se han considerado todos los condicionantes posibles, desde el clima, los usos del suelo y la situación social y económica del área de estudio hasta un estudio hidrológico detallado con un modelo de inundación que nos indica las zonas más vulnerables. También se han tenido en cuenta las áreas protegidas y...

  4. Report on needs and priorities in the field of international cooperation agreements on water management in the target MACs

    Esteve Bengoechea, Paloma; Varela Ortega, Consuelo; Martinez Ríos, Marina; Gafrej, Raoudha; Jaouani, Atef; Abdel-Motaleb, Alaa A.; El-Din Abdin, Alaa; Abdel Monem, Mohamed; Karajeh, Fawzi
    This report aims to provide a revision of the water related goals within the international agreements joined by the three case study countries,Egypt, Morocco and Tunisia, while emphasizing the critical points that should be developed and reinforced in the near future through an integrated approach for water policies, initiatives and management.

  5. Review of the use of economic instruments in water management in Egypt, Morocco and Tunisia

    Suárez-Varela Maciá, Marta; Blanco Gutierrez, Irene; Varela Ortega, Consuelo; Esteve Bengoechea, Paloma
    The Mediterranean is a region comprising very diverse cultures, climatic conditions and socio-economic backgrounds. Regarding water resources, the combination of high temperatures and low precipitation have led to high pressure on water resources in most countries of the region. Within the Mediterranean, the MENA region is particularly vulnerable, being the most arid region in the world (FAO, 2016). In Egypt, Morocco and Tunisia, the situation is not very different. As shown in Table 17, with high levels of exploitation of their water resources and freshwater resources availability below 1000 m3 per capita and year, they are considered as water poor...

  6. Combining Continuous and Event Based Fully Distributed Hydrologic Models for Extreme Flood Estimation

    Gabriel Martín, Iván; Sordo Ward, Álvaro Francisco; Garrote de Marcos, Luis
    This study presents a methodology to estimate flood frequency curves for high return periods through stochastic rainfall simulation and rainfall-runoff modeling

  7. Comparison and Validation of Hydrological E-Flow Methods through Hydrodynamic Modelling

    Kuriqi, Alban; Rivaes, Rui; Sordo Ward, Álvaro Francisco; Pinheiro, Antonio N.; Garrote de Marcos, Luis
    Flow regime determines physical habitat conditions and local biotic configuration. The development of environmental flow guidelines to support the river integrity is becoming a major concern in water resources management. In this study, we analysed two sites located in southern part of Portugal, respectively at Odelouca and Ocreza Rivers, characterised by the Mediterranean climate. Both rivers are almost in pristine condition, not regulated by dams or other diversion construction. This study presents an analysis of the effect on fish habitat suitability by the implementation of different hydrological e-flow methods. To conduct this study we employed certain hydrological e-flow methods recommended by the European Small Hydropower Association...

  8. Metodología estocástica para la determinación de resguardos estacionales en presas

    Gabriel Martín, Iván; Sordo Ward, Álvaro Francisco; Garrote de Marcos, Luis
    El estudio presenta una metodología de carácter estocástico para la definición de Normas de Explotación optimizando tanto la explotación ordinaria como la gestión de avenidas. Además, la metodología permite la evaluación de la seguridad hidrológica de presas teniendo en cuenta la variabilidad del nivel inicial en el embalse en el momento de avenida. El caso de estudio es una presa bóveda clasificada como tipo A en función del riesgo potencial cuyo principal uso es el regadío. En el caso de estudio, se ha determinado un conjunto de resguardos maximizando la demanda máxima atendible para una garantía volumétrica del 90 %....

  9. Herramientas para la cuantificación del impacto hidrológico y ecológico de la producción hidroeléctrica

    Bejarano Carrión, María Dolores; García Palacios, Jaime; Sordo Ward, Álvaro Francisco; Alonso González, Carlos; Nilsson, Christer
    La energía hidroeléctrica está siendo fomentada a nivel mundial por ser renovable y limpia. Sin embargo, su producción conlleva impactos al ecosistema fluvial, destacando las consecuencias ecológicas de la alteración de los regímenes naturales de caudales. Concretamente, las centrales a pie de presa operan de forma intermitente de acuerdo a los precios y a la demanda de energía, que varían de forma instantánea, provocando el fenómeno del hydropeaking. El hydropeaking consiste en la variación frecuente y rápida del caudal en un breve período de tiempo, generalmente a lo largo del día (variaciones intra-día o instantáneas), y que resulta en alteraciones...

  10. Dilution versus pollution in watercourses affected by acid mine drainage: a graphic model for the iberian pyrite belt (sw spain)

    Grande, J.A.; Santiesteban, M.; Pérez-Ostalé, E.; Valente, T.; Torre, M.L. de la; Gomes, P.; Barrio Parra, Fernando
    The aim of this study was to chemically charac- terize the water quality impacts of the 88 acid mine drainage (AMD) generating mines in the Spanish sector of the Iberian Pyrite Belt (IPB). This was necessary because the Water Framework Directive of the European Union and the hydro- logical plans of the Tinto, Odiel, and Piedras river basins require that water quality be improved enough to allow at least some of the rivers in the IPB to sustain healthy fish populations by 2027. The results indicate a clear decrease in metals, arsenic, and sulfate concentrations and increased pH between the...

  11. Analysis of Current and Future SPEI Droughts in the La Plata Basin Based on Results from the Regional Eta Climate Model

    Sordo Ward, Álvaro Francisco; Bejarano Carrión, María Dolores; Iglesias Picazo, Ana Luisa; Asenjo Díaz, Víctor; Garrote de Marcos, Luis
    We identified and analysed droughts in the La Plata Basin (divided into seven sub-basins) for the current period (1961-2005) and estimated their expected evolution under future climate projections for the periods 2011-2040, 2041-2070, and 2071-2099. Future climate projections were analysed from results of the Eta Regional Climate Model (grid resolution of approximately 10 km) forced by the global climate model HadGEM2-ES over the La Plata basin, and considering a RCP4.5 emission scenario. Within each sub-basin, we particularly focused our drought analyses on croplands and grasslands, due to their economic relevance. The three-month Standardized Precipitation Evapotranspiration Index (SPEI3) was used for...

  12. The Environmental Costs of Water Flow Regulation: an Innovative Approach Based on the "Polluter Pays" Principle

    García de Jalón González del Tánago, Silvestre; Gonzalez del Tanago del Rio, Marta; Alonso González, Carlos; García de Jalón Lastra, Diego
    The EU Water Framework Directive (WFD) explicitly requires the full cost recovery of water services, including the environmental costs incurred from the damage that water uses inflict on the environment. Although flow regulation by river damming is one of the most prominent human impact on fresh water ecosystems its environmental costs are not properly included in water pricing. This paper presents a novel approach to assessing the environmental costs of flow regulation based on the polluter-pays principle. The methodology includes three steps: (i) assessing the admissible range of regulated flow variability, derived from the natural flow regime variability, (ii) estimating...

  13. Linking environmental flows to sediment dynamics

    Garcia de Jalón, Diego; Bussettini, Martina; Rinaldi, Massimo; Grant, Gordon; Friberg, Nikolai; Cowx, Ian G.; Magdaleno Mas, Fernando; Buijse, Tom
    This is a policy discussion paper aimed at addressing possible alternative approaches for environmental flows (e-Flows) assessment and identification within the context of best strategies for fluvial restoration. We focus on dammed rivers in Mediterranean regions. Fluvial species and their ecological integrity are the result of their evolutionary adaptation to river habitats. Flowing water is the main driver for development and maintenance of these habitats, which is why e-Flows are needed where societal demands are depleting water resources. Fluvial habitats are also shaped by the combined interaction of water, sediments, woody/organic material, and riparian vegetation. Water abstraction, flow regulation by...

  14. A graphical approach to characterize sub-daily flow regimes and evaluate its alterations due to hydropeaking

    Alonso González, Carlos; Román de Andrés, Alfonso; Bejarano Carrión, María Dolores; García de Jalón Lastra, Diego; Carolli, Mauro
    Most flow regime characterizations focus on long time scale flow patterns, which are not precise enough to capture key components of short-term flow fluctuations. Recent proposed methods describing sub-daily flow fluctuations are focused on limited components of the flow regime being unable to fully represent it, or on the identification of peaking events based on subjectively defined thresholds, being unsuitable for evaluations of short-term flow regime alterations through comparisons between regulated and free-flowing rivers. This study aims to launch an innovative approach based on the visual display of quantitative information to address the challenge of the short-term hydrologic characterization and...

  15. Evolución del bosque de ribera del río Guadalix en su tramo regulado

    Garcia De Jalon Lastra, Diego; Maroto De Mercado, Judit; Martinez Fernandez, Vanesa
    Este trabajo expone la dinámica de un bosque ripario afectado por la regulación de un gran embalse y cómo ha influido la implementación del caudal ecológico en la disposición espacial de las especies leñosas. El estudio de la evolución de las dimensiones del corredor ripario en el tiempo se ha realizado mediante el análisis diacrónico de las ortofotos disponibles (1956, 1975, 1991, 2009 y 2014). Dado que la presa empezó a funcionar en 1968, se dispone de las condiciones de referencia del corredor (antes del cierre de la presa) y en condiciones alteradas (después). Los resultados muestran que el corredor...

  16. Longitudinal connectivity loss in a riverine network: accounting for the likelihood of upstream and downstream movement across dams

    Rincón Sanz, Gonzalo; Solana Gutierrez, Joaquin; Alonso González, Carlos; Saura Martínez de Toda, Santiago Fulgencio; García de Jalón Lastra, Diego
    Disruption of longitudinal connectivity is a major concern in most of the world¿s rivers. Approaches based on graph theory have proven to be a suitable tool for analysing functional connectivity. However, previous applications of graph-based connectivity methods to river systems have been oversimplified in that they have treated potential barriers as binary features and rivers as symmetric networks. We here apply a network analytical approach in which (a) upstream and downstream connectivity are considered so that fish passability values across dams are asymmetrical, and (b) it is possible to consider a continuous range of passability values for every dam. We...

  17. Dismantling artificial levees and channel revetments promotes channel widening and regeneration of riparian vegetation over long river segments

    Martinez Fernandez, Vanesa; Gonzalez Lopez, Eduardo; López Almansa, Juan Carlos; González, Sofía Maura; Garcia De Jalon Lastra, Diego
    Longitudinal structures manipulation can re-activate channel migration and thus restore flood-dependent riparian plant communities in human-constrained floodplains. However, it has been rarely implemented over long restored river segments and has been infrequently assessed while taking into account river conditions prior to restoration. This study describes the morphological and vegetation response to this type of restoration in a project completed in 2012 along a 21.6 km river segment in the Órbigo River (NW Spain). Land cover changes and channel planform evolution in the restored segment were compared with a downstream non-restored (control) segment and to an upstream unregulated (reference) segment before...

  18. How climate change will affect sessile stages of brown trout (Salmo trutta) in mountain streams of the Iberian Peninsula

    Santiago Saez, Jose Maria; Alonso González, Carlos; Garcia De Jalon Lastra, Diego; Solana Gutierrez, Joaquin
    This study is aimed at quantitatively predicting thermal and physical habitat loss for the sessile stages of brown trout life cycle due to clime change, in mountain streams at the rear edge of the species natural distribution using high-resolution spatial-temporal simulations of the thermal and physical habitat. Status: Accepted presentation

  19. Functional analysis in long-term operation of high power UV-LEDs in continuous fluoro-sensing systems for hydrocarbon pollution

    Arqués Orobón, Francisco José; Núñez Mendoza, Neftalí; Vázquez López, Manuel; González Posadas, Vicente
    This work analyzes the long-term functionality of HP (High-power) UV-LEDs (Ultraviolet Light Emitting Diodes) as the exciting light source in non-contact, continuous 24/7 real-time fluoro-sensing pollutant identification in inland water. Fluorescence is an effective alternative in the detection and identification of hydrocarbons. The HP UV-LEDs are more advantageous than classical light sources (xenon and mercury lamps) and helps in the development of a low cost, non-contact, and compact system for continuous real-time fieldwork. This work analyzes the wavelength, output optical power, and the effects of viscosity, temperature of the water pollutants, and the functional consistency for long-term HP UV-LED working...

  20. Estrategia para la mejor gestión de los Mecanismos de Retribución por Servicios Ecosistémicos Hídricos en Lima (Perú) a través del análisis de actores

    Galende Sánchez, Ester
    Perú es uno de los países del mundo más ricos en recursos hídricos. Sin embargo, su capital, la ciudad de Lima, afronta una grave situación de estrés hídrico. Los Mecanismos de Retribución por Servicios Ecosistémicos Hídricos pueden constituir una herramienta eficaz para enfrentar este problema a través de la conservación, recuperación y uso sostenible de los ecosistemas situados en partes altas de las cuencas que abastecen a la metrópoli. La presente investigación tiene dos resultados principales obtenidos mediante una serie de entrevistas semiestructuradas junto a una encuesta online, así como la asistencia a varias reuniones y viajes de campo. En primer lugar, se ha...

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