@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 = "25 abr. 2024"
}