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@InProceedings{StechAlcLorNovAss:2010:ImCoFr,
               author = "Stech, Jos{\'e} Luis and Alc{\^a}ntara, Enner Herenio de and 
                         Lorenzzetti, Jo{\~a}o Antonio and Novo, Evlyn M{\'a}rcia 
                         Le{\~a}o de Moraes and Assireu, Arcilan Trevenzoli",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "The impacts of the cold fronts on thermal stratification and water 
                         quality in a tropical reservoir (Brazil)",
            booktitle = "Proceedings...",
                 year = "2010",
                pages = "94--101",
         organization = "International Workshop on Physical Processes in Natural Waters.",
            publisher = "University of Iceland",
             keywords = "Thermal stratification, telemetric monitoring, Lake Number.",
             abstract = "Cold fronts arising from Antarctic and reaching the southeast 
                         Brazil region modify the wind field basic and have important 
                         impact over physical, chemistry and biological processes that act 
                         in the hydroelectric reservoirs. During the winter time these cold 
                         fronts can reach southeast Brazilian coast each six days and 
                         summer each fourteen days in average. Most part of them reaches 
                         interior of S{\~a}o Paulo, Minas Gerais and Goias States. Thus, 
                         the objective of this work is to analyze the influence of cold 
                         fronts passage in the thermal stratification and water quality of 
                         the Itumbiara (Goias, Brazil) hydroelectric reservoir. To reach 
                         this objective a collection o meteorological (wind direction and 
                         intensity, short-wave radiation, air temperature, relative 
                         humidity, atmospheric pressure), water quality (pH, dissolved 
                         oxygen, conductivity, turbidity) and water temperature in four 
                         depths (5, 12, 20 and 40 m) data were used. These data were 
                         collected using an Integrated System for Environmental Monitoring 
                         called SIMA, in high frequency, 10 minutes. SIMA, developed in 
                         partnership between the Vale do Paraiba University and the 
                         National Institute of Space Research INPE), is a set of hardware 
                         and software designed for data acquisition and quasi real time 
                         monitoring of hydrological systems. SIMA utilizes Brazilian 
                         satellites to transmit the data. The stratification was assessed 
                         by non-dimensional parameter analysis. The Lake Number an 
                         indicator of the degree of stability and mixing in the reservoir 
                         was used in this analysis. It was possible to observe the 
                         developing of upwelling and downwelling in different shores of the 
                         reservoir during the cold fronts passage. These phenomena can 
                         modify the chemistry and biological processes in the water body.",
  conference-location = "Reykjavik",
      conference-year = "June 28 - July 1, 2010",
                 isbn = "978-9979-9812-9-9",
                label = "lattes: 7939379291404418 2 StechAlcLorNovAss:2010:ImCoFr",
             language = "en",
           targetfile = "stech1.pdf",
        urlaccessdate = "17 jan. 2021"
}


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