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RBRH-Revista Brasileira de Recursos Hidricos最新文献

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Ocean surface change detection from remote sensing image based on stochastic similarity measure 基于随机相似测度的遥感影像海洋表面变化检测
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220093
Ian Henrique Teles Braga, Vinicius Pereira do Sacramento, Lígia Claudia Castro de Oliveira, F. N. S. Medeiros, F. A. Rodrigues
{"title":"Ocean surface change detection from remote sensing image based on stochastic similarity measure","authors":"Ian Henrique Teles Braga, Vinicius Pereira do Sacramento, Lígia Claudia Castro de Oliveira, F. N. S. Medeiros, F. A. Rodrigues","doi":"10.1590/2318-0331.272220220093","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220093","url":null,"abstract":"ABSTRACT Change detection based on remote sensing images, has attracted increasing attention from researchers throughout the world. The synthetic aperture radar (SAR) images have become key resources for detecting changes on the land surface. However, due to the presence of speckle noise and its stochastic nature, SAR data require methodologies that consider these peculiarities. This article presents a similarity measure that considers the randomness present in SAR data. To retrieve the random component in the SAR data, we used the stochastic distance. The similarity measure is carefully elaborated as a function of the stochastic distance such that its variation space is the interval [0, 1], facilitating its interpretation. Our proposal shows promising results in two applications: contrast evaluation, ocean surface change detection and binary change map. It is noteworthy that the possible limitations of our proposal are investigated through simulations guided by a Monte Carlo experiment.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"40 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79021760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Surface water resources of Santa Catarina state’s southern region - geochemical background of the coal mining territory 圣卡塔琳娜州南部地区地表水资源——煤炭开采地区的地球化学背景
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220084
Albert Teixeira Cardoso, F. Fan, Melissa Franzen, G. Simão, Guilherme Casarotto Troian
{"title":"Surface water resources of Santa Catarina state’s southern region - geochemical background of the coal mining territory","authors":"Albert Teixeira Cardoso, F. Fan, Melissa Franzen, G. Simão, Guilherme Casarotto Troian","doi":"10.1590/2318-0331.272220220084","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220084","url":null,"abstract":"ABSTRACT In the environmental reclaiming process, it is essential to distinguish between chemical elements concentrations that occur naturally in water resources (geochemical background), from those originated from anthropogenic activities. Despite the environmental efforts that have been carried out for more than two decades in the southern Brazilian region impacted by coal mining, its geochemical background is still not completely known. Filling this environmental knowledge gap was the objective of this work, which systematically analyzed the results of monitoring efforts carried out by the Geological Survey of Brazil (SGB/CPRM) across three years. Quality parameter distributions of rivers and streams unaffected by anthropogenic impact were analyzed. The database was used to perform principal component analysis (PCA) and cluster analysis, and to define the background values, which was done through the boxplot and ± 2 MAD (Median Absolute Deviation) methods. The results of multivariate statistical analyses clustered the monitoring sites into two groups, one related to the sedimentary rocks of the Paraná Basin and another to the crystalline basement rocks. The sedimentary group had a greater correlation with the parameters Eh, SO42-, Ca, Mg, EC, Mn, Acidity, Zn and Na; while, and the crystalline rocks group were better correlated with pH, Cu, Al, K, and Fe. The results of the geochemical background were similar for both methods, with values of pH, Fe, Al, and Mn being slightly different from those defined in Brazilian legislation (CONAMA 357/05 and MS 888/21).","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"60 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77353614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrological risk of dam failure under climate change 气候变化下大坝溃坝的水文风险
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220017
B. L. D. S. Carneiro, F. S. Souza Filho, T. M. N. Carvalho, J. B. S. Raulino
{"title":"Hydrological risk of dam failure under climate change","authors":"B. L. D. S. Carneiro, F. S. Souza Filho, T. M. N. Carvalho, J. B. S. Raulino","doi":"10.1590/2318-0331.272220220017","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220017","url":null,"abstract":"ABSTRACT Most water infrastructure was designed for climate conditions and demands that have been rapidly changing. In this study, we investigate flood magnitude and dam safety under climate change, using an ensemble of CMIP6 climate models, coupled to a hydrological model. We compare historical and future climate conditions of a watershed in Ceará, Northeast Brazil. Climate models revealed a wide range of risk levels of flood and hydrological failure. Half of the climate scenarios indicated a reduction in the flood return period. A flood associated with a 1000-year storm had an occurrence probability about 12 times higher when comparing the SSP5 8.5 scenario with historical conditions. In one more critical scenario, the water depth exceeded the height of the dam's crest. When considering a flood associated with a decamillennial storm, dam collapse risk was increased. Climate change might increase the risk of water infrastructure failure, which needs to be adapted to ensure the safety of the water system stakeholders.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75679359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Experimental and representative watersheds as a training site of qualified professionals in water resources: a case study of Onça Creek Watershed (SP, Brazil) 作为水资源合格专业人员培训地点的试验性和代表性流域:onrada Creek流域案例研究(SP，巴西)
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220040
A. Reis, Rubens Takeji Aoki Araujo Martins, L. E. Bertotto, Érick Rúbens Oliveira Cobalchini, Y. Ishizawa, E. Wendland
{"title":"Experimental and representative watersheds as a training site of qualified professionals in water resources: a case study of Onça Creek Watershed (SP, Brazil)","authors":"A. Reis, Rubens Takeji Aoki Araujo Martins, L. E. Bertotto, Érick Rúbens Oliveira Cobalchini, Y. Ishizawa, E. Wendland","doi":"10.1590/2318-0331.272220220040","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220040","url":null,"abstract":"ABSTRACT This study aims to present how continuous and systematic monitoring in representative and experimental watersheds can help form high-level professionals and researchers in water resources, based on a case study of the Onça Creek Watershed (OCW). Through a historical survey of the monitoring network and the scientific studies carried out in the area, we identified people and map their geographical and professional location, to analyze the impact and importance of this area for the water resources community. We identified 90 scientific studies already developed at the OCW, which resulted in 22 masters and 4 Ph.D. students formed, involving another 33 external collaborators. We observed that 85% of the trained professionals continue to exercise functions related to water resources, in public and private institutions, throughout Brazil and abroad. We highlight the importance of financial support from research and development agencies, both for the monitoring network expansion and the training students' scholarships. We believe that the involvement of water resources graduate programs can be a way to increase the number of experimental and representative watersheds monitored in Brazil.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"8 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84248892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of nonstationarity on reservoir storage-yield-reliability relationships 非平稳性对水库库容-产量-可靠性关系的影响
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220043
Henrique Degraf, D. H. M. Detzel
{"title":"Influence of nonstationarity on reservoir storage-yield-reliability relationships","authors":"Henrique Degraf, D. H. M. Detzel","doi":"10.1590/2318-0331.272220220043","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220043","url":null,"abstract":"ABSTRACT The reservoir storage-yield-reliability (S-Y-R) curve defines the required volume to meet a specific yield. It is typically obtained through the historical streamflow time series; however, as an effect of nonstationarity, the statistical properties of a streamflow series may vary, which might lead to a change in the reservoir’s operational risk. In this study we explore this issue by analyzing two sets of annual data: (i) natural energy flows to aggregated reservoirs, and (ii) streamflow time series of four hydropower plants currently in operation in Brazil. The study is supported by Monte Carlo simulations to account for the reliability of the S-Y-R curves. Results suggest that the time series from the Southern and Northeast regions exhibit upward and downward trends, respectively. Consequently, the regularization capacity of the Southern reservoir decreased, however only in relative terms. On the other hand, the Northeastern reservoir had an actual loss of its regularization capacity as an effect of lower average streamflow.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"63 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84349553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Prediction of leakage flow rate from upward water jets bursting at the ground 地面上向水射流破裂泄漏流量预测
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220210139
Luísa Ciríaco Silva de Oliveira, I. L. Lima Neto
{"title":"Prediction of leakage flow rate from upward water jets bursting at the ground","authors":"Luísa Ciríaco Silva de Oliveira, I. L. Lima Neto","doi":"10.1590/2318-0331.272220210139","DOIUrl":"https://doi.org/10.1590/2318-0331.272220210139","url":null,"abstract":"Abstract This paper presents experimental studies to explore the behavior of upward water jets in granular beds. The test conditions included both the cavity and chimney regime. Combining our results with data available in the literature, it was possible to fit a linear relationship to describe the dimensionless upward water velocity at the bed surface (u/U) as a function of kFr, in which Fr is the Froude number and k is a fitting parameter that was linearly related with the medium particle diameter d. A threshold condition (kFr = 1) was also proposed to predict the onset of the chimney regime, which was consistent with published data. Finally, a simple equation based on d, D and H was derived to predict the real-scale leakage flow rate Q from upward water jets bursting at the ground. The results obtained will potentially help water utilities estimate the water loss from underground pipelines.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"177 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84407632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Reservoir operation in the context of inter-basin water transfer 跨流域调水背景下的水库运行
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220055
Maiara de Lemos Câmara, Joana Darc Freire de Medeiros, A. G. Maia
{"title":"Reservoir operation in the context of inter-basin water transfer","authors":"Maiara de Lemos Câmara, Joana Darc Freire de Medeiros, A. G. Maia","doi":"10.1590/2318-0331.272220220055","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220055","url":null,"abstract":"ABSTRACT Inter-basin water-transfer projects are used as a possible solution to increasing water scarcity in many regions, but these projects are often expensive and require large infrastructures, so their benefits need to be maximised and their costs reduced. In this context, this study’s objective was to define technical criteria to operate water reservoirs in the context of water transfer between river basins by using Brazil’s Armando Ribeiro Gonçalves (ARG) reservoir in the state of Rio Grande do Norte, one of the reservoirs receiving water from the São Francisco River Integration Project (PISF), as a case study. The results demonstrate that using hydrological conditions to define when and how much water to transfer is extremely important for water resource management, as it increases reservoir efficiency and reduces transferred volumes, thereby cutting costs.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"348 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86798325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use of self organizing map to identify precipitation patterns and assess their impact on hydrographic basins in Brazil 利用自组织地图识别降水模式并评估其对巴西水文盆地的影响
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220051
Yoshiaki Sakagami, Vinicius Nunes Folganes, C. A. Penz, Murilo Reolon Scuzziato, F.Y.K. Takigawa
{"title":"Use of self organizing map to identify precipitation patterns and assess their impact on hydrographic basins in Brazil","authors":"Yoshiaki Sakagami, Vinicius Nunes Folganes, C. A. Penz, Murilo Reolon Scuzziato, F.Y.K. Takigawa","doi":"10.1590/2318-0331.272220220051","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220051","url":null,"abstract":"ABSTRACT In this study, we used neural networks known as self-organizing maps (SOMs) to identify clusters of spatial synoptic precipitation patterns. These clusters were compared with the precipitation regime of the ten main hydrographic sub-basins in Brazil. Sixty years of daily precipitation data obtained from over 389 weather station in Brazil were used as input data for the SOMs, with a number of six clusters being prescribed as the optimal number according to the elbow and silhouette methods. The six precipitation patterns identified by the SOMs reflect the typical synoptic conditions associated mainly with the cold frontal systems (CF), South American Monsoon System (SAMS) and Inter-tropical Convergence Zone (ITCZ). In conclusion, SOMs perform well using interpolated precipitation data as the input data to identify synoptic precipitation patterns, which could be used to monitor the spatial distribution of precipitation, which affects the hydrographic basins in Brazil and hence hydropower plant performance.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"37 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81147565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reuse of a dam as sediment trap and water reserve 水坝作为沉积物收集器和水储备的再利用
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220220067
C. Chagas, R. M. Moreira, C. H. Augustin, J. V. Bandeira, C. A. C. Carvalho Filho
{"title":"Reuse of a dam as sediment trap and water reserve","authors":"C. Chagas, R. M. Moreira, C. H. Augustin, J. V. Bandeira, C. A. C. Carvalho Filho","doi":"10.1590/2318-0331.272220220067","DOIUrl":"https://doi.org/10.1590/2318-0331.272220220067","url":null,"abstract":"ABSTRACT One of the dilemmas that characterizes the end of active service of small hydroelectric plants (SHPs) is regarding the destination of the dams. This is the case of the Pandeiros SHP, located in the state of Minas Gerais, Brazil. Several alternatives are being considered to make its decommissioning feasible, such as opening the bottom discharge gate and removing the reservoir containment dike. However, in a review of recent research in the basin, more than 200 active gullies were found upstream of the dam, contributing to the silting up of the reservoir and of the Pantanal Mineiro, an extensive wetland downstream of the SHP that is vital to the biodiversity of the region. Following a worldwide movement to reuse such structures, periodic dredging of part of the sediment retained in the reservoir is proposed, converting it into a trap to reduce the silting of the wetland by the upstream sediment, in addition to the creation of a reserve volume of water needed for agriculture and human consumption.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"139 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77887159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of hydrological stress in a river basin in northeastern Brazil 巴西东北部河流流域水文应力的测定
IF 0.8
RBRH-Revista Brasileira de Recursos Hidricos Pub Date : 2022-01-01 DOI: 10.1590/2318-0331.272220210118
Alexson Caetano da Silva, Edinilson de Castro Ferreira, J. Cabral, J. G. Azevedo
{"title":"Determination of hydrological stress in a river basin in northeastern Brazil","authors":"Alexson Caetano da Silva, Edinilson de Castro Ferreira, J. Cabral, J. G. Azevedo","doi":"10.1590/2318-0331.272220210118","DOIUrl":"https://doi.org/10.1590/2318-0331.272220210118","url":null,"abstract":"ABSTRACT This study determines the degree of hydrological stress (HS) on the Goiana River basin in Pernambuco, a state in northeastern Brazil. The hydrological stress index is obtained by comparing the values of the surface permits with the limits granted by the managers. The results pointed to a situation of “High” hydrological stress (HS) in the Nazaré da Mata sub-basin, with approximately 94.76% of the grantable flow being used. In the Caricé sub-basin, the degree of hydrological stress was considered “Medium,” with about 31.77% of available flow being granted. The other sub-basins had results considered to be “Low” hydrological stress (between 0% and 25%). Given these results, this study emphasizes the importance of constantly monitoring data on the demand for water use in the region and improving the criteria management bodies follow when granting permits.","PeriodicalId":54151,"journal":{"name":"RBRH-Revista Brasileira de Recursos Hidricos","volume":"46 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90683557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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