EECA - Artigos publicados em periódicos
URI Permanente para esta coleção
Navegar
Submissões Recentes
Item Analysis of the IMERG-GPM precipitation product analysis in brazilian midwestern basins considering different time and spatial scales(2022-08) Duarte, Luíza Virgínia; Formiga, Klebber Teodomiro Martins; Costa, Veber Afonso FigueiredoPrecipitation products derived from satellites have emerged as a promising approach for obtaining precipitation estimates, enabling accurate long-term observations and describing the water cycle dynamics from a global scale to a local scale. The quality of these products has improved significantly in the last decades, especially with the emergence of TRMM missions and its successor GPM. The objective of this study was to evaluate the daily, monthly and annual precipitation estimates provided by IMERG version 05 of the GPM, with the data observed by the rainfall stations of the Brazilian Agency of Water and Sanitation (ANA) in the basins of the Brazilian midwest. In order to compare the data, the spatialization of the data of the rainfall stations was performed by means of the ordinary kriging technique, interpolating the data for grids of 0.1◦ × 0.1◦ that correspond to the specialized grids of the GPM satellite. The data were evaluated quantitatively by means of statistical metrics. The GPM satellite precipitation product performed relatively well on a daily scale for regions with smooth topography, and was able to describe the rainfall regime on larger time scales, regardless of the terrain conditions. However, the satellite retrievals were unable to reproduce rainfall extremes in virtually all situations, which may limit their application in frequency analyses.Item Comparison of methods for filling daily and monthly rainfall missing data: statistical models or imputation of satellite retrievals?(2022) Duarte, Luíza Virgínia; Formiga, Klebber Teodomiro Martins; Costa, Veber Afonso FigueiredoAccurate estimation of precipitation patterns is essential for the modeling of hydrological systems and for the planning and management of water resources. However, rainfall time series, as obtained from traditional rain gauges, are frequently corrupted by missing values that might hinder frequency analysis, hydrological and environmental modeling, and meteorological drought monitoring. In this paper, we evaluated three techniques for filling missing values at daily and monthly time scales, namely, simple linear regression, multiple linear regression, and the direct imputation of satellite retrievals from the Global Precipitation Measurement (GPM) mission, in rainfall gauging stations located in the Brazilian midwestern region. Our results indicated that, despite the relatively low predictive skills of the models at the daily scale, the satellite retrievals provided moderately more accurate estimates, with better representations of the temporal dynamics of the dry and wet states and of the largest observed rainfall events in most testing sites in comparison to the statistical models. At the monthly scale, the performance of the three methods was similar, but the regression-based models were unable to reproduce the seasonal characteristics of the precipitation records, which, at least to some extent, were circumvented by the satellite products. As such, the satellite retrievals might comprise a useful alternative for dealing with missing values in rainfall time series, especially in those regions with complex spatial precipitation patterns.Item Evaluation of water level in flowing channels using ultrasonic sensors(2022-05) Pereira, Tatiane Souza Rodrigues; Carvalho, Thiago Pires de; Mendes, Thiago Augusto; Formiga, Klebber Teodomiro MartinsMonitoring flow in channels is difficult, expensive, and potentially dangerous; hence, alternatives minimizing these factors are sought and indirect methods to measure the flow based on water-level information, among others, are employed. Ultrasonic sensors along with Arduino are widely used to monitor levels in reservoirs; however, the accuracy of this method in turbulent flow regimes has not been evaluated. Therefore, in this study, we evaluated the level of open channel flows using a combination of Arduino and ultrasonic sensors whilst considering turbulence. Additionally, we statistically compared the simultaneous measurements of levels obtained using five ultrasonic sensors with those of five rulers filmed individually along an artificial channel, for four permanent and two transient regimes. The results showed that the errors in measurements increased with increasing turbulence. These errors were within the range of hydraulic measurements (<0.020 m), indicating that the procedure is valid for experienced conditions. Therefore, the combination of Arduino and ultrasonic sensors is a technically and economically viable alternative. However, calibrating and validating the sensors for distances greater than 0.400 m should be performed with care because the bench tests performed in static conditions were limitedly accurate in measuring distances greater than 0.200 m.Item Avaliação da demanda futura de água na bacia hidrográfica do rio Umbeluzi em Moçambique(2021) Notisso, Pedro Francisco; Formiga, Klebber Teodomiro MartinsThe management of water resources in the Umbeluzi River basin is an important issue due to the worsening of water scarcity in urban centres and in agriculture, which can jeopardize socio-cultural, ecological and economic values. Even more important is the fact that it is an international basin, whose demand for water has been increasing due to agricultural expansion, population growth and possible failures in the integrated management of water resources. The study evaluated the allocation of surface water to meet different needs using Water Evaluation AndPlanning (WEAP) model. WEAP model was validated in the period from 2005 to 2011 with NSE of 0.69 and Bias of 5.2% in the volume of the reservoir and 2005 with an NSE of 6.7 and Bias of 6.0% in the flow. Four scenarios were evaluated taking into account the domestic, agricultural and industrial sectors. The results show that the unmet demand is 33.6 hm3 and 57.3 hm3 in domestic supply and 3.5 hm3 and 7.4 hm3 in industry for the Reference and Highest Growth scenarios in 2040. In agriculture, unmet demand isestimated at 12.9 hm3 and 22 hm3 in 2040. These results emphasize the need to implement demand-side management strategies to minimize the impacts of water scarcity.Item Calibração de um modelo hidrodinâmico em um canal urbano utilizando algoritmos genéticos multiobjetivos(2016-12) Formiga, Klebber Teodomiro Martins; Oliveira, Fernanda Almeida de; Pereira, Tatiane Souza Rodrigues; Soares, Alexandre KeplerThis paper aims to perform calibration of a hydrodynamic model for open channels using evolutionary algorithms multi-objectives from water level measurements. The method was applied in an urban channel with gabion coating with bottom macro-roughness. An event was used to calibrate parameters and three events for validation. Two objective functions were used in the optimization, the Nash-Sutcliffe efficiency coefficient and the error of the peak quota. The NSGA-II optimization algorithm presented excellent results, obtaining Nash-Sutcliffe coefficients higher than 0.96, and errors of maximum dimension less than 0.40 cm for both calibration and validation of every event. The value of the roughness was found to be 0.0905 for the path with obstacles and 0.0277 for the part with gabion.Item Estudo hidromorfológico de bacia hidrográfica urbana em Goiânia/GO(2017-08) Romero, Vanessa; Formiga, Klebber Teodomiro Martins; Marcuzzo, Francisco Fernando NoronhaQuantifying the consequences of runoff and degree of infiltration in an urban basin allows the assessment of channel drainage patterns, the occurrence of floods and erosion. The objective of this study was to study the hydromorphology of the urban watershed of the Botafogo Stream, aiming to quantify the physical and morphological parameters that interfere in its hydrological behavior. The methodology used in the study was the use of numerical equations, in addition to the raster and vector data generated in the GIS program, favoring the investigation of the parameters of linearity, area, length and hypsometry of the basin, revealing the behavior of the physiography of the river basin and indicating the morphological indices that interfere in its hydrological activity. Floods in the Botafogo Stream have been frequent due to the altimetric gradient (143 m) of the water body that is born at quota 844 and flows at an altitude of 701 m in relation to the level of the sea, indicating a slight slope that contributes to the rapid concentration of rainwater in the Botafogo Stream and its tributaries. The Botafogo River Basin is poorly drained (0.58 km -1) suggesting, therefore, that the occurrence of floods is related to the relief.Item Monitoramento do lençol freático na bacia do Córrego Botafogo - Goiânia/GO(2018-12) Romero, Vanessa; Formiga, Klebber Teodomiro Martins; Romero, Diego de SousaGeostatistics represents a tool to systematize data, involving analysis and inference of spatial and / or temporal phenomena taking into account the geographic location and the spatial dependence of variables. In this study, the geostatistical technique of kriging was used to interpolate groundwater levels in non-sampled sites taking into account the hydrogeological, climatological and vegetation characteristics of the area. The altimetric dimensions were obtained in GIS program through SRTM project data. The data collection of the groundwater level of the monitoring network was carried out through the Water Tape level meter monthly and included periods of drought and rainfall between May 2016 and June 2017. The month of September 2016 represented the largest number of dry wells (9). While the water level of the PM - J lowered by an average of 0.63 m compared to the dry months of May and June of 2016 and the same two months of 2017. Comparing the results of the dry period contemplated in 2016 and 2017 by this study, we noticed a greater fluctuation of groundwater level in the Botafogo stream basin in May 2016 and May 2017.Item Interferências de espécies arbóreas na interceptação das águas pluviais urbanas(2018) Alves, Patrícia Layne; Formiga, Klebber Teodomiro Martins; Traldi, Marco Antônio BorgesThis study evaluates evaluated the interception and its impacts in urban watersheds. Data collection occurred in Uruaçu, Goiás, between 2013 and 2014, and used three individual trees. For events with median rainfall of 20.7 mm, the three species met the following median values for interception and stem flow, respectively: 5.7 and 0.1 mm for Mangifera indica; 4.5 and 0.2 mm for Licania tomentosa; and 3.8 and 0.3 mm for Tabebuia ochracea. The delay time of the surface runoff was on average 3 min for the three species. The study proves proved the interference and the positive impacts of treetops and trunks on the interception of rainwater in an urban environment. It indicates the possibility of annual runoff reduction in up to 27% and shows that urban afforestation can reduce stormwaterstorm water runoff and intensity of volume disposed, as well as increase the time of concentration and the time to the peak of hydrographs, especially of small watersheds.Item Análise da distribuição granulométrica ao longo da bacia hidrográfica do Rio Meia Ponte - Goiás(2019-12) Amaral, Ana Karolyna Nunes; Formiga, Klebber Teodomiro MartinsThe rivers are one of the main means of transportation of sediments, being these coming from erosive processes that occur in the surface, caused by the action of external dynamic agents like wind, gravity, ice and as also by anthropic activities. The Meia Ponte-Go River Basin has the main tributaries that supply the city of Goiânia and metropolitan region, being of great importance the knowledge of the hydro - sedimentological characteristics, mainly when it refers to the granulometry of suspended sediments, being this a variable that is not given the due importance in the management and planning processes. The objective of this study was to characterize the granulometry of suspended sediments in tributaries along the basin, as well as to compare two particle size calibration equipment using laser diffraction technology: LISST-SL and MASTERSIZER 2000. The samples were collected with the Van Dorn Bottle sampler, from the point method by integration. According to the results, it was observed that the granulometry of the suspended sediments decreased downstream from the main river (Meia Ponte), with a decrease in the mean diameter (D50) from the dry season to the rainy season. In relation to the comparison of the granulometers, a difference was obtained 17% for section 2, and 20% for section 3, in relation from one equipment to another.Item Efeitos da arborização urbana na redução do escoamento pluvial superficial e no atraso do pico de vazão(2019-04) Alves, Patrícia Layne; Formiga, Klebber Teodomiro MartinsSoil proofing and absence of tree cover produces more volume of surface runoff, enlarges the peak flow and reduces the delay time. The search for alternatives to reduce the volume of surface runoff in urban areas is important to get the hydrological answers to the problems caused by the urbanization process and, along with that, to reduce the risk of flooding. This article proposes to estimate the reduction of runoff and the delay in the peak flow caused by the presence of three species of trees (Mangifera indica, Tabebuia ochracea and Licania tomentosa) in urban areas. This allowed the quantification and the performance analysis of tree species in reducing urban runoff; the arboreal parameters correlated with the flow capacity reduction; and examined whether there is reduction and delay in the peak flows. The benefits from the interception of storm water for trees need to be pondered and guaranteed in afforestation master plans and urban drainage in order to reach the mitigation of damage caused by the neglect of urban water. For this, level sensors were used (limnigraphs) to quantify the surface runoff in areas with and without the presence of arboreal coverage, and in experimental structures set on waterproof, semipermeable and permeable soil. For events with an average value of gross precipitation of 17.1 mm, the presence of arboreal individuals caused an average time delay up to the peak flow of 3 minutes, an average reduction of peak flow of 0.8 mm/min and it contributed to an average reduction of surface runoff of 4.7 mm/min.Item Prospecção das Interdependências entre Água, Energia e Alimento no Brasil(2019-09) Batista, José Anderson do Nascimento; Wendland, Edson Cezar; Formiga, Klebber Teodomiro MartinsThe water resources management in Brazil consists an enormous challenge before domestic and global demands for food, energy matrix renewal and environmental conservation. Although Brazil has one of the world’s most complete legislation, its environmental management capacity has been tested, just like all the rest of the international community, for the water use conflict intensification. Such conflicts potentially intensify after the population grow, the market globalization which mostly reflects in the water resources throughout the virtual water traffic, and the global warming. The water resources management capacity, therefore, comes after the water use demands intelligence and management and its compatibilization to the watershed environmental conservation. The environmental conservation itself is mostly achieved after an appropriated water valuation, which is a key factor to the balance of the water budget all over the watersheds. Such achievement will affect not only the way water use conflicts are solved, but also the effectiveness of environmental conservation measures and the technological advances for the coming changes in water use in the country, since it has already begun in developed countries. In this sense, opportunities to the Brazilian water management system efficiency increase depend on mapping and facing rising problems from the food production, energy generation and water conservation in that country.Item Avaliação de alocação de água na bacia hidrográfica do rio Inhanombe, Moçambique(2020) Notisso, Pedro Francisco; Formiga, Klebber Teodomiro MartinsMeeting human and environmental water needs is a topic that has deserved attention in the area of water resources management and planning in the world. Uncertainties about the possibilities of meeting future water needs in the Inhanombe river basin motivated this work. This article aims to evaluate the ability to meet water needs through the application of WEAP. Three scenarios were simulated: the reference scenario that corresponds to the current exploitation of water resources; two impact scenarios: Medium and High growth corresponding to the expansion of irrigated area and population growth between 2019 and 2040. The results show the system's inability to meet future needs in medium and high growth scenarios with low monthly guarantee levels and many supply failures.Item Avaliação de contribuição do reservatório de Movene na bacia hidrográfica do rio Umbeluzi em Moçambique(2021) Notisso, Pedro Francisco; Formiga, Klebber Teodomiro MartinsThe management of water resources in the Umbeluzi River basin is an important issue due to the worsening of water scarcity in urban centres and in agriculture, which can jeopardize socio-cultural, ecological and economic values. Even more important is the fact that it is an international basin, whose demand for water has been increasing due to agricultural expansion andpopulation growth. The study evaluated the contribution of the new Movene reservoir and new rules of priority in the allocation of surface water to meet different needs usingWater Evaluation And Planning (WEAP) model. WEAP modelwas validated from 2005 to 2011 with NSE of 0.69 and Bias of 5.2% in the volume of the reservoir and 2005 with an NSE of 6.7 and Bias of 6.0% in the flow. The results demonstrate a lower contribution of the Movene reservoir, the unmet demand in domestic supply went from 33.6hm3to 10.1 hm3in the Reference scenario and from 57.3 hm3to 19.9 hm3in the Reference scenario Higher Growth scenario in 2040. Considering the same year, unmet demand in agriculture fell from 12.9 hm3to 4.1 hm3and from 22 hm3to 10.3 hm3in the Reference and Higher Growth scenarios. In the industrial sector, only the Highest Growth scenario has unmet demand, having gone from 7.4 hm3to 0.3 hm3in 2040. These results emphasize the need to implement demand-side management strategies to minimize the impacts of water scarcity.Item Uso do modelo HEC-RAS com base em informações de LiDAR para avaliação de inundações urbanas(2022-02) Mendes, Thiago Augusto; Sousa, Marlon Barbosa de; Pereira, Sávio Aparecido dos Santos; Santos, Kamila Almeida dos; Formiga, Klebber Teodomiro MartinsThe disordered growth of cities and the excessive waterproofing are problematic of the large urban centers, having as a main consequence the occurrence of floods and overflows. Within this context, hydrodynamic modeling can be an important tool for the determination of floodable areas, allowing the estimation of flood quotas for different scenarios of return periods (TR) and project rainfall, thus allowing to more accurately represent reality and minimize errors arising from hydraulic designs. Working with Geographic Information System (GIS), where the channel geometry is extracted using the high precision Digital Terrain Model (DTM) generated by LiDAR (Light Detection and Ranging) survey and hydrodynamic modeling software (HEC-RAS), it was possible to evaluate different flood scenarios in the channeled concrete section, in the Botafogo Stream in Goiânia, Goiás. With the results of hydrodynamic modeling, it was possible to evaluate the propagation behavior of the generated flows, finding that for precipitation with TR 50 years or older, the plumbing limits do not support the generated and transported volumes, causing flooding in six critical stretches. The data obtained by HEC-RAS could be validated from photographic records released by the press and topographic survey of flooded sites, so that the integration between GIS and hydrodynamic modeling proved to be efficient for the study of floodable areas.Item Análise cienciométrica de estudos sobre ilhas de calorurbanas com uso de sensoriamento remoto de 2000 a 2020(2022) Lopes, Estéfane da Silva; Hora, Karla Emmanuela Ribeiro; Campos, Marcus André SiqueiraIn the recent period, increase in global temperature verified by the period of climate change is one of the main environmental changes. When it comes to the increase in urban temperature between areas and rural areas, on a local or regional scale, studies tend to assess the heat island phenomenon. Understanding the urban importance of heat, its main industries and research can contribute to the analysis of the phenomenon in countries with late urbanization. For, a scientometric was developed on the studies that focused on this thematic analysis in the period from 2000 to 2020, whose research resulted in 169 articles. The entire production went to this universe; including country, year, authors, institutions, keywords, journal (impact factor), climate, population and geographic area. The methodology used allows us to state that the urban number of publications related to urban heat islands has increased constantly in 2000. The country that stood out the most was China, responsible for about 40% of the total number of articles on heat islands. Chinese Academy of Sciences, Nanjing University, were the two universities in China that published the most articles on urban heat islands. Modeling remains the main method, and the use of remote sensing tools is increasingly highlighted.Item Habitação e habitabilidade rurais(2022) Leite, Liziana de Sousa; Scalize, Paulo Sérgio; Hora, Karla Emmanuela RibeiroHousing instigates a reflection on its concept, which can be interpreted only as the action of inhabiting, as well as a physical structure characterized by habitability. In order to discuss and define housing and habitability concepts to be used in Brazilian rural communities, a systematic literature review was developed, based on the CAPES Periodicals Portal, and eligibility criteria were applied, resulting in 37 articles for analysis and discussion. The articles analyzed presented sociological, environmental and sanitary points of view for the concept of housing, denoting the need for a differentiated look from the ways of life of its residents. This gave the definition of rural housing as a multifunctional physical structure, with internal and external spaces for housing and work support. Within this context, the concept of rural habitability attributes to rural housing characteristics appropriate to the realities of the countryside and the needs of its residents, ensuring a comfortable, healthy, safe architecture with access to quality public equipment and services. The concepts defined in this research of rural housing and habitability complement each other and imply the quality of life of rural residents. Then, it can be used in further studies in the fields of home sanitation and environmental health.Item The barometer of sustainability as a monitoring tool of the sustainable development process in Ribeirão Preto, Brazil(2017) Batalhão, André Cavalcante da Silva; Teixeira, Denilson; Godoi, Emiliano Lôbo deThe aim is to present and discuss the level of sustainability of Ribeirão Preto, Brazil based on Sustainability Indicators using the Barometer of Sustainability. The Barometer of Sustainability is a method of two-dimensional analysis which assesses the wellbeing in human and ecological dimensions of an equitable and systematic system, not leaving the data overlap, not masking the results and finding in a Wellbeing Index. The results showed that Ribeirão Preto is on intermediate level in relation to sustainable development with better performance in human dimensions. The themes of Soil and Biodiversity were considered unsustainable in the analysis of findings. This reveals that the city presents a greater concern with the socio-economic issues at the expense of environmental issues.Item Exploring the local sustainability approach using indicators(2018-11) Batalhão, André Cavalcante da Silva; Teixeira, Denilson; Godoi, Emiliano Lobo de; Prates, Glaucia AparecidaThe purpose of this research was to analyze the application of the Barometer of Sustainability (BS) as a tool for monitoring the sustainability process, using the case of the municipality of Ribeirão Preto, Brazil. The method adopted was based on the important seven stages for the BS application. The methods used were exploratory, descriptive, analytical and field research approaches, combining primary and secondary data. BS as an evaluation tool has proved useful in contributing to the understanding of social and natural phenomena, providing the monitoring of sustainability on a local scale. The findings indicated that the municipality had a greater concern with socioeconomic issues in relation to environmental issues. Based on BS, Ribeirão Preto was classified as intermediate level in relation to Sustainable Development, presenting better performance in the Human Subsystem. To solve the main methodological difficulties related with sustainability indicators to measure the sustainability dimensions on local level, and transpose these challenges is a continuous and emergency process. The integration of information from institutional bodies and sharing of data are paramount for public management at the municipal level to help develop and consolidate national databases. In this paper the authors demonstrated that is necessary to develop efficient methods of sustainability evaluation for local practice to develop policies and actions and add value in the decision-making process of local governments.Item Measuring the health and population dimensions based on sustainability approach(2018-02) Batalhão, André Cavalcante da Silva; Teixeira, Denilson; Godoi, Emiliano Lôbo de; Prates, Glaucia AparecidaIndicators related to Health and Population represents the progress or regresses toward a goal, and they are considered as resource of perception, phenomenon and trend. Indicators can be used to guide public planning and management. The performance of indicators has an important role in determining the applicability and efficacy on municipality management, in public sphere. Indicators set contribute to the strategic monitoring and should be based on a accurate analysis and meaning at every stage of development indicators. However, the proper use of indicators in the Brazilian public management is still a methodological and political challenge with rather vague guidelines in many municipalities. Furthermore, the indicators are important assessment tools to identify social needs and contribute to public planning and management. The aim of this research was to evaluate the sustainability level of Health and Population dimensions in Ribeirão Preto, Brazil. The analysis was based on secondary data of specialized governmental agencies. The main results demonstrated good levels of sustainability for the analyzed indicators.Item Types of environmental licensing: an analysis of the temporal evolution in Brazil(2018-01) Batalhão, André Cavalcante da Silva; Chacon, Alessandra; Godoi, Emiliano Lôbo de; Teixeira, Denilson