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The internal wave field in Sau reservoir : Observation and modeling of a third vertical mode

Water withdrawal from Mediterranean reservoirs in summer is usually very high. Because of this, stratification is often continuous and far from the typical two-layered structure, favoring the excitation of higher vertical modes. The analysis of wind, temperature, and current data from Sau reservoir (Spain) shows that the third vertical mode of the internal seiche (baroclinic mode) dominated the internal wave field at the beginning of September 2003. We used a continuous stratification two-dimensional model to calculate the period and velocity distribution of the various modes of the internal seiche, and we calculated that the period of the third vertical mode is ;24 h, which coincides with the period of the dominating winds. As a result of the resonance between the third mode and the wind, the other oscillation modes were not excited during this period

Association for the Sciences of Limnology and Oceanography (ASLO)

Autor: Vidal Hurtado, Javier
Casamitjana, Xavier
Colomer, Jordi
Serra Putellas, Teresa
Resum: Water withdrawal from Mediterranean reservoirs in summer is usually very high. Because of this, stratification is often continuous and far from the typical two-layered structure, favoring the excitation of higher vertical modes. The analysis of wind, temperature, and current data from Sau reservoir (Spain) shows that the third vertical mode of the internal seiche (baroclinic mode) dominated the internal wave field at the beginning of September 2003. We used a continuous stratification two-dimensional model to calculate the period and velocity distribution of the various modes of the internal seiche, and we calculated that the period of the third vertical mode is ;24 h, which coincides with the period of the dominating winds. As a result of the resonance between the third mode and the wind, the other oscillation modes were not excited during this period
Accés al document: http://hdl.handle.net/2072/242788
Llenguatge: eng
Editor: Association for the Sciences of Limnology and Oceanography (ASLO)
Drets: Tots els drets reservats
Matèria: Ones -- Models matemàtics -- Sau, Pantà de (Catalunya)
Hidrodinàmica -- Sau, Pantà de (Catalunya)
Waves -- Mathematical models -- Sau, Pantà de (Catalonia)
Hydrodynamics -- Sau, Pantà de (Catalonia)
Títol: The internal wave field in Sau reservoir : Observation and modeling of a third vertical mode
Tipus: info:eu-repo/semantics/article
Repositori: Recercat

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