Banca de DEFESA: Gilliard Nunes Silva

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : Gilliard Nunes Silva
DATE: 27/10/2022
TIME: 14:00
LOCAL: SALA DE AULA PPGTARH/UNB
TITLE:

STUDY OF INTERVENING VARIABLES IN THE QUALI-QUANTITATIVE BALANCE OF A BASIN-LAKE SYSTEM: THE CASE OF PARANOÁ LAKE- DF

KEY WORDS:

Mathematical modeling, flow balance, water quality, SWAT, thermal patterns, lake Paranoá.

PAGES: 230
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

Using the Paranoá Lake Basin (BLP) as a case study, the hydrological aspects and the production of nutrient loads (Total Phosphorus and Total Nitrogen) were investigated with a focus on modeling basins using the SWAT model. In Lake Paranoá, in turn, hydrodynamic and water quality aspects were observed through monitoring and modeling with CE-QUAL-W2. In the study of the watershed, a database was improved, having as a starting point the one prepared by Nunes (2016). Contributions were estimated in terms of flow and loads of nitrogen and total phosphorus for Lake Paranoá, such estimates allowed the spatialization and identification of critical contribution areas for load production. As for the modeling of Lake Paranoá, a database was built from 2000 to 2017. Then, the conceptual model, and initial and boundary conditions for the execution of CE-QUAL-W2 were defined. To improve the calibration process, a pa rameter optimization routine was developed in the R language to obtain better adjustments to the model, a strategy that proved to be effective in the calibration process, obtaining solutions applicable to the description of the thermal patterns of the Lake. To improve the existing database, a monitoring network was implemented containing a meteorological station and three anemometers, in addition to two temperature profiles was installed in lake Paranoá at Ponte das Garças and Ponte Juscelino Kubitschek, the monitoring temperatures from the surface to the sediment, collecting hourly data in the years 2019 and 2020. The CE-QUAL-W2 model was also applied in these years, once again obtaining satisfactory results in the description of the thermal patterns of the Lake. After calibrating the temperature model, an exploratory analysis was carried out regarding the modeling of water quality in lake Paranoá, however, there was a need for greater effort to generate better results. Finally, the models were integrated to propose scenarios considering the integration of basin and shape lake studies. The scenario elaborated sought to simulate the stress conditions of lake Paranoá observed between the years 1985 and 1995. Overestimated results were obtained concerning what was observed at the time.

BANKING MEMBERS:
Externo à Instituição - JOSÉ RODOLFO SCARATI MARTINS - USP
Interno - 2764698 - CARLOS HENRIQUE RIBEIRO LIMA
Presidente - 2189333 - RICARDO TEZINI MINOTI
Externo à Instituição - TALITA FERNANDA DAS GRACAS SILVA - UFMG