The thermal structure of Sau Reservoir (NE: Spain): a simulation approach

Han, Bo; Armengol, Joan; García, Juan Carlos; Comerma, Marta; Roura, Montse; Dolz, Josep; Straškraba, Milan

doi:10.1016/s0304-3800(99)00176-3

Cited by 94 publications

(62 citation statements)

References 16 publications

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“…It was observed that when smaller value of n is used the solar radiation penetrated further in the water column. A value of 0.5 was used as the extinction coefficient for Tahtali Reservoir model (Gal et al 2003;Han et al 2000) and solar radiation was allowed to penetrate until the thermocline. The time series of temperature values were measured at 30 min intervals at 11 m depth below the water surface corresponding to the thermocline.…”

Section: Comparison Of Numerical Modeling Results With Field Measuremmentioning

confidence: 99%

“…EFDC is a general-purpose modeling package for simulating three-dimensional (3-D) flow, transport, and biogeochemical processes in surface water systems (Hamrick 1996) such as rivers, lakes, reservoirs, estuaries, wetlands and coastal regions. The EFDC model was originally developed at Virginia Institute of Marine Science for estuarine and coastal applications.…”

Section: Numerical Modelmentioning

confidence: 99%

“…The model also can simulate wetting and drying conditions of the grid cells. For the details of model capabilities, the reader is referred to the user's manual (Hamrick 1996). The Tahtali hydrodynamic model grid contains 6,084 cells, 2,041 of which were active horizontal curvilinear grid cells with seven vertical layers.…”

Section: Numerical Modelmentioning

confidence: 99%

“…In this paper, a numerical hydrodynamic model is applied to Tahtali Reservoir to simulate temperature profiles due to atmospheric forcing and inflows/outflows, and results are compared to measured temperature data. A 3-D hydrodynamic model; Environmental Fluid Dynamics Code (EFDC) developed by Hamrick (1996) has been selected to model the hydrodynamics of Tahtali Reservoir.…”

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confidence: 99%

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Effects of Selective Withdrawal on Hydrodynamics of a Stratified Reservoir

Çalışkan

Elçi

2008

Water Resour Manage

104

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In water supply reservoirs, selective withdrawal is commonly implemented to control released water temperature for quality purposes. This study investigated the effects of selective withdrawal on hydrodynamics of a stratified reservoir through numerical modeling and analytical analysis. A 3-D hydrodynamic model was applied where observations of water temperature time series recorded every 30 min at the thermocline and measured temperature profiles along the water column were used to validate the numerical model. The effect of selective withdrawal from four outlets located along the water intake structure of Tahtali Reservoir in Turkey on water temperatures was investigated and the effects on thermal stratification structure were discussed. Withdrawal of the water at the bottom outlet was found to be the most effective choice encouraging the mixing of the water column and thus reducing anoxia. The results of this study can be used to guide the further investigations in stratified lakes for better management practices.

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Section: Comparison Of Numerical Modeling Results With Field Measuremmentioning

confidence: 99%

Section: Numerical Modelmentioning

confidence: 99%

Section: Numerical Modelmentioning

confidence: 99%

mentioning

confidence: 99%

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Effects of Selective Withdrawal on Hydrodynamics of a Stratified Reservoir

Çalışkan

Elçi

2008

Water Resour Manage

104

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“…La estructura térmica del embalse y el calor almacenado en él dependen de la profundidad de la que se toma el agua (Han et al, 2000;Moreno-Ostos et al, 2008). Los sistemas de captación múltiple pueden ofrecer una solución para evitar las bajas temperaturas en primavera y verano, permitiendo la descarga de agua con una temperatura adecuada (Sherman et al, 2007).…”

Section: Local: Gestión Hidráulica Del Embalseunclassified

Contributions from limnology to reservoir management

et al. 2014

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ResumenEl presente trabajo describe algunas aportaciones de la limnología a la gestión de embalses a partir de la revisión de la bibliografía y de la experiencia de los autores. Después de explicar los principales retos a los que se enfrentan los gestores de embalses, se dan ejemplos de medidas a aplicar, destacando la importancia de tener en cuenta las diferentes escalas de gestión tanto temporales (escala plurianual, anual, diaria) como espaciales (cuenca, tramo fluvial, embalse o cadena de embalses). También se revisan los métodos disponibles para el estudio del estado ecológico de los embalses. Palabras clave | InTRODuCCIÓnTradicionalmente, la gestión de los embalses se ha centrado en la satisfacción de los usos consuntivos y no consuntivos, y no se ha prestado la atención necesaria a los procesos que influyen en su estado ecológico y químico y a la influencia sobre la calidad aguas abajo. Si bien los embalses son sistemas creados por el ser humano, para gestionarlos de forma adecuada hay que ir más allá del concepto de un volumen de agua retenido por una presa. Son sistemas naturalizados, colonizados por microorganismos, animales y plantas. Sus aguas están expuestas a procesos físicos, químicos y biológicos que afectan a su calidad y que son muy semejantes a los que ocurren en los lagos naturales, si bien no son exactamente iguales. Es por eso que la limnología, que se puede definir como la parte de la ecología que se ocupa del estudio de las masas de agua continentales, aporta unos conocimientos de gran interés para la gestión de los embalses.

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Effects of rainfall on thermal stratification and dissolved oxygen in a deep drinking water reservoir

Liu

Zhang

Shi

et al. 2020

Hydrological Processes

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Thermal stratification is crucial for water quality and ecological processes in deep lakes and reservoirs and can be substantially affected by meteorological and hydrological processes in the catchment. However, how thermal stratification responds to rainfalls of different intensities and changing hydrological processes has not been documented very well. Here, high frequency water column profiles at three stations in a large subtropical deep reservoir (Lake Qiandaohu, China) in 2017 were used to elucidate the impacts of rainfall on lake physical process and chemical environment. The impact of rainfalls on the thermal stratification and dissolved oxygen in riverine zone was more impressive than that in transitional and lacustrine zones. The effect on thermal stratification by rainfall was largely affected by the magnitude of rainfall. Moderate and heavy rainfall events could reduce the thermal stability of water column, deepen the mixing layer depth, and shape the thermocline, resulting from decrease of surface water temperature and increased inflows. While rainstorms could totally break up thermoclines in the riverine zone by high volume inflow flushing. In addition, we found that the hypoxia and anoxia initial depths increased during rainfall events in this reservoir, which were well related to the changes of mixing layer depths. This research highlights that quantifying the effects of rainfalls on thermal stratification and dissolved oxygen will be beneficial for optimizing reservoir management.

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The thermal structure of Sau Reservoir (NE: Spain): a simulation approach

Cited by 94 publications

References 16 publications

Effects of Selective Withdrawal on Hydrodynamics of a Stratified Reservoir

Effects of Selective Withdrawal on Hydrodynamics of a Stratified Reservoir

Contributions from limnology to reservoir management

Effects of rainfall on thermal stratification and dissolved oxygen in a deep drinking water reservoir

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