scholarly journals Surface runoff estimate in urbanized area from the Rangel Stream basin at São Sebastião do Paraíso/MG

2019 ◽  
Vol 23 ◽  
pp. 36
Author(s):  
Amanda Francieli de Almeida ◽  
Cristhiane Michiko Passos Okawa
Keyword(s):  
Urban Growth ◽  
Surface Runoff ◽  
Urban Areas ◽  
Google Earth ◽  
Runoff Coefficient ◽  
Residential Areas ◽  
Simple Method ◽  
Urbanized Area ◽  
Green Areas ◽  
The Impact

Urban growth generates impacts over land usage and may alter the hydrological systems of a microbasin. The unregularized occupation impermeabilizes the soil and increase the volume and velocity of superficial runoff. Thus, inundation, flood and overflow occur in urban areas.  In this context, this work’s objective was to quantify the impact of soil impermeabilization over the surface runoff coefficient in the microbasin of the Liso stream at São Sebastião do Paraíso county, Minas Gerais. Google Earth satellite images were used for the identification and determination of occupied urban areas, and ArcGis 10.4 software was utilized for letter elaboration, which determined the permeable areas. It was taken as hypothesis that the surface runoff coefficient is equal to one in impermeabilized areas. In addition, green areas and unoccupied allotments were considered as permeable areas. In order to determine the impermeabilized area, the permeable area was subtracted from the total area. The surface runoff coefficient was estimated as the relation between the impermeabilized area and the total urbanized area. The results have demonstrated that the urbanized area located in the microbasin grew 44,47% in ten years. Therefore, the estimate of surface runoff coefficient utilized in this paper can be a good alternative for city halls to analyze the urban growth and aid in the circumscription of residential areas or green areas, since it is a simple method which requires data easily generated through maps.

Use of permeable, reservoir pavement constructions for stormwater treatment and storage for re-use

1999 ◽  
Vol 39 (5) ◽  
pp. 145-151 ◽  
Author(s):  
C. J. Pratt
Keyword(s):  
Water Quality ◽  
Urban Areas ◽  
Water Environment ◽  
Cost Savings ◽  
Environmental Benefits ◽  
Stormwater Treatment ◽  
Residential Areas ◽  
Materials Used ◽  
The Uk ◽  
The Impact

Permeable surfaces for roads and footpaths have been used as a means of disposal of stormwater in developed urban areas. Such surfaces provide an alternative to impermeable concrete or tarmacadam surfaces which would otherwise produce rapid stormwater runoff, leading to possible flooding and degeneration of receiving water quality through the uncontrolled discharge of polluted urban waters. A further advantage may be obtained from such constructions by undersealing them so as to retain stormwater for re-use for non-potable uses. The potential for general introduction of this type of storage and re-use system in residential areas is discussed and possible alternative designs for the drainage infrastructure proposed. To have widespread impact such a strategy must deliver cost savings as well as reduce the impact on the water environment of anticipated water usage demands. The source of such cost savings and the general environmental benefits of such systems will be presented. The materials used in such a sealed construction and the beneficial changes to the stored water quality are outlined. Recent work has also shown that where the pavement is used for car parking any oils dropped on the surface and washed into the structure by the stormwater may also be degraded. Details will be given of a site in the UK where the above construction is to be used to provide stormwater storage for re-use in flushing toilets at a Youth Hostel.

scholarly journals Avaliação geoespacial da expansão do aglomerado urbano Crajubar utilizando inteligência geográfica

2020 ◽  
Vol 13 (1) ◽  
pp. 423
Author(s):  
Rudá Peixoto Teles ◽  
Maria Lucineide Gomes da Silva ◽  
Antonio Junior Alves Ribeiro
Keyword(s):  
Population Growth ◽  
Urban Growth ◽  
Urban Areas ◽  
Google Earth ◽  
Spatial Expansion ◽  
Northeast Region ◽  
Government Institutions ◽  
Economic Information ◽  
Infrastructure Health ◽  
Official Information

Na região Nordeste do Brasil existe uma gama de aglomerações urbanas, dentre as quais se destaca a conurbação urbana, conhecida como Crajubar, localizada na Região Metropolitana do Cariri (RMC), no sul do Ceará, onde existe uma percepção de ausência de limites urbanos entre os três municípios: Crato, Juazeiro do Norte e Barbalha. Assim, este trabalho busca compreender a dinâmica da expansão do Crajubar, por meio de técnicas de Geoprocessamento. Para tanto, utilizou-se arquivos vetoriais da delimitação territorial com mancha urbana do ano de 2005 e imagens orbitais dos satélites GeoEye do ano de 2018. Para o processamento dos dados foi utilizado o software QGIS. O Google Earth foi usado para identificar estabelecimentos responsáveis por atraírem crescimento urbano para o seu entorno, ainda foram utilizadas informações oficiais de crescimento populacional e informações econômicas geradas pelos órgãos oficiais. Como resultados, geraram-se arquivos vetoriais com duas manchas urbanas da região, sendo uma de 2005 e outra de 2018, as quais apresentam a conurbação dos três municípios para as duas situações. A partir do mapa gerado, construiu-se o entendimento dos fatores que impulsionam a expansão espacial urbana do Crajubar, tais como serviços públicos nas áreas de infraestrutura, saúde e educação. Evaluation of expansion of Crajubar urban agglomerate using geomatics A B S T R A C TIn the Northeast region of Brazil there is a range of urban agglomerations, among which the urban conurbation known as Crajubar. It is located in the metropolitan area of Cariri (MAC), in the south of Ceará, where there is a perception of the absence of urban boundaries between the three towns: Crato, Juazeiro do Norte and Barbalha. This work tries to understand the dynamics of the expansion of Crajubar, using Geoprocessing techniques. It was used shapefiles of the territorial delimitation with urban area of the year of 2005 and GeoEye satellites images of the year of 2018. The QGIS software was used for data processing. The Google Earth was used to identify companies and institutions responsible for attracting urban growth for the around their area, official information on population growth and economic information generated by government institutions was also used. As a result, shapefiles were generated with two urban areas in the region, one of area in 2005 and another area in 2018, where each one presents the conurbation of the three towns for both situations. From the generated map, the understanding of the factors that have influenced the urban spatial expansion of Crajubar was constructed, such as public services of infrastructure, health and education.Keywords: Urbanization, Population Growth, Geoprocessing.

scholarly journals An automated classification system for urban areas matching the ‘city country fingers’ pattern: the cases of Kamakura (Japan) and Acireale (Italy) cities

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Roberto Spina ◽  
Emiliano Tramontana
Keyword(s):  
Urban Area ◽  
Urban Areas ◽  
Agricultural Land ◽  
Google Earth ◽  
Classification Model ◽  
Complete Analysis ◽  
City Development ◽  
Essential Condition ◽  
Green Areas ◽  
The City

Abstract The uncontrolled expansion of urban areas is one of the main factors that reduce the liveability of cities. In recent years, to contrast urban sprawl, several nations have promoted policies aimed at developing urban green spaces. The importance of green oases within cities had already been highlighted, in 1977, by the architect Christopher Alexander who had developed a series of patterns including ‘City Country Fingers’ claiming that city development should consider the prolongation of country land in to the urban area. In several cities, especially in Japan, it is possible to recognize the imprint of urban development based on country fingers. This term refers to extensive urban intersections of agricultural land or wooded hills which, from the peripheral areas, penetrate the city. Inside them, there are urban windows, called city fingers, whose development direction is opposite to those of the country fingers. To recognize and analyze, in an automated way, these particular structures, a Python-based application was created. Starting from the original high-resolution image of Google Earth, a complete analysis was performed, labeling and delimiting urban and vegetational areas and extrapolating the main geometric parameters of the country and city fingers. The finalization of the results obtained was carried out through a classification model whose criteria were based on Alexander’s pattern. Thanks to this classification scheme, the distinction between Active Green Areas (country fingers) and Passive Green Areas (gardens and public parks) have been revealed for the analyzed cities. The tests performed showed almost ideal conditions for the city of Kamakura and a limited match for the urban area of Acireale. The proposed method is suitable for fields of application that require a qualitative and quantitative determination of the vegetation cover present within the city, an essential condition for correct territorial planning.

scholarly journals Modeling Charging Infrastructure Requirements to Achieve a Holistic E-Mobility Integration in Regional Energy Systems

2021 ◽  
Author(s):  
Dominik Husarek ◽  
Simon Paulus ◽  
Michael Metzger ◽  
Vjekoslav Salapic ◽  
Stefan Niessen
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Mobility Model ◽  
Residential Areas ◽  
Charging Infrastructure ◽  
Charging System ◽  
Charging Station ◽  
Grid Operators ◽  
Regional Energy Systems ◽  
The Impact

Since E-Mobility is on the rise worldwide, large Charging Infrastructure (CI) networks are required to satisfy the upcoming Charging Demand (CD). Understanding this CD with its spatial and temporal uncertainties is important for grid operators to quantify the grid impact of Electric Vehicle integration and for Charging Station (CS) operators to assess long-term CI investments. Hence, we introduce an Agent-based E-Mobility Model assessing regional CI systems with their multi-directional interactions between CSs and vehicles. A Global Sensitivity Analysis (GSA) is applied to quantify the impact of 11 technical levers on 17 relevant charging system outputs. The GSA evaluates the E-Mobility integration in terms of grid impact, economic viability of CSs and Service Quality of the deployed Charging Infrastructure (SQCI). Based on this impact assessment we derive general guidelines for E-Mobility integration into regional systems. We found, inter alia, that CI policies should aim at allocating CSs across different types of locations to utilize cross-locational effects such as CSs at public locations affecting the charging peak in residential areas by up to 18%. Additionally, while improving the highway charging network is an effective lever to increase the SQCI in urban areas, public charging is an even stronger lever in rural areas.

Cross sectoral and scale-up impacts of greywater recycling technologies on catchment hydrological flows

2008 ◽  
Vol 57 (5) ◽  
pp. 741-746 ◽  
Author(s):  
N Bertrand ◽  
B Jefferson ◽  
P Jeffrey
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Surface Runoff ◽  
Urban Areas ◽  
Scale Up ◽  
Catchment Scale ◽  
Flood Volume ◽  
Recycling Systems ◽  
Flooding Events ◽  
The Impact

With the growth of urban areas and climate change, decisions need to be taken to improve water management. This paper reports an assessment of the impact of greywater recycling systems on catchment scale hydrological flows. A simulation model developed in InfoWorks CS (Wallingford Software Ltd) was used to evaluate how river flows, sewer flows, surface runoff and flooding events may be influenced when grey water recycling systems of different number and scale are implemented in a representative catchment. The simulations show the effectiveness of greywater recycling systems in reducing total wastewater volume and flood volume. However, no hydraulic impacts due to implementation of greywater was identified by the model.

scholarly journals Analizy Space Syntax wobec zjawiska segregacji społecznej i izolacji przestrzennej obszarów mieszkaniowych

2020 ◽  
pp. 13-18
Author(s):  
Justyna Olesiak
Keyword(s):  
Public Space ◽  
Urban Design ◽  
Urban Areas ◽  
Space Syntax ◽  
Residential Areas ◽  
Syntax Analysis ◽  
The Face ◽  
Urban Analysis ◽  
The Impact ◽  
The City

W wielu obszarach miejskich widoczna jest skrajna segregacja przestrzeni publicznej oraz fakt, że wiele dzielnic mieszkaniowych jest przestrzennie odizolowanych od miasta jako całości. Ponieważ tradycyjne metody analiz urbanistycznych dają słabe wytyczne w tym kontekście, podjęta zostanie próba ujęcia problemu i odmiennego podejścia do segregacji w projektowaniu urbanistycznym. Niniejszy artykuł bada, w jaki sposób teorie i metody analizy Space Syntax mogą przyczynić się do stworzenia bardziej dopracowanych opisów relacji przestrzennych w różnych dzielnicach i całym mieście. Przyjęto metodę badawczą: analizę literatury fachowej (krajowej i zagranicznej) oraz dostępnych publikacji. Analiza urbanistyczna oparta na teorii Space Syntax umożliwia wykazanie zasadniczych różnic strukturalnych między dzielnicami i określenie wpływu form urbanistycznych na zalety przestrzenne różnych obszarów miasta. Otwiera to nowe możliwości rozwiązania problemu segregacji w zakresie projektowania urbanistycznego oraz sformułowanie bardziej skutecznych interwencji antysegregacyjnych. Space Syntax analysis in the Face of the Phenomenon of Social Segregation and Spatial Isolation of Residential Areas In many urban areas there is an observable extreme segregation of public space, in addition to the fact that many housing districts are spatially isolated from the city as a whole. As traditional methods of urban analysis provide poor guidelines in this context, an attempt to investigate this problem and present a different approach to segregation in urban design was made. This paper presents an investigation about how Space Syntax theories and methods can contribute to creating more detailed descriptions of spatial relationships in different districts and in the entire city. The research method employed was an analysis of the literature (both domestic and trade). Space-Syntax-based urban analysis enables demonstrating significant structural differences between districts and to determine the impact of urban forms on the spatial advantages of different areas of the city. It provides new opportunities to address segregation in urban design and formulate more effective anti-segregation interventions.

scholarly journals Contribution of Greening and High-Albedo Coatings to Improvements in the Thermal Environment in Complex Urban Areas

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Bonggeun Song ◽  
Kyunghun Park
Keyword(s):  
Land Use ◽  
Urban Areas ◽  
Thermal Environment ◽  
Explanatory Power ◽  
Ground Cover ◽  
Residential Areas ◽  
Coating Materials ◽  
Land Use Types ◽  
Green Areas ◽  
Field Temperature

The aim was to identify microclimate characteristics in relation to ground cover in green areas and the reflectivity of building coating materials. Furthermore, microclimate modeling of temperatures was conducted using ENVI-met, to analyze the effects of improved thermal environments based on increased green areas and increased reflectivity of exterior coatings. The accuracy of ENVI-met was validated through comparisons with field temperature measurements. The RMSE deviation of the predicted and actual field temperature values was 3–6°C; however, the explanatory power was as high as 60%. ENVI-met was performed for commercial and single residential areas that have high densities of artificial cover materials, before and after changes related to development of green areas and to increase in the reflectivity of coating materials. The results indicated that both areas exhibited distinct temperature reductions due to the creation of green spaces. When the reflectivity of the coating material was increased, a temperature increase was observed in all land-use types. Therefore, in order to improve the thermal environment of complex urban areas, it is necessary to improve green-area development and to use high-reflectivity ground and building cover materials, while taking into account the spatial characteristics of land-use types and their surrounding areas.

scholarly journals Environmental noise levels and noise annoyance in Novi Sad, 2012-2016

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
E Zivadinovic ◽  
M Jevtic ◽  
N Dragic ◽  
S Bijelovic
Keyword(s):  
Public Health ◽  
Human Health ◽  
Noise Level ◽  
Urban Areas ◽  
Road Traffic ◽  
Public Health Problem ◽  
Road Traffic Noise ◽  
Residential Areas ◽  
Novi Sad ◽  
The Impact

Abstract Objective Increased noise level represents a significant public health problem in urban environments. The aim of this paper is to examine the annoyance of the population by road traffic noise in the City of Novi Sad. Methods The results of 161 24-hour noise measurements in Novi Sad were analyzed. Measurements were done by Public Health Institute of Vojvodina, according to accredited and standardized national methodology during 2012 - 2016. Results Total noise indicator (Lden) / night noise indicator (Lnight) ranged from 61,1 dB / 50,7 dB in residential, up to 66,3 dB / 58,1 dB in recreation / hospital areas, 68,0 dB / 60,3 dB in city traffic areas and 70,2 dB / 62,7 dB in business and residential areas. Taking into account the results and using methodology prescribed by national regulations, the percentage of highly annoyed population (% HA) was found to be in the range 11-25% during the day, and 6-13% during the night. Using ISO 1996-1:2016, prevalence of a population highly annoyed (PHA) was established to be in the range 9,2-33,9% in residential; 18,4-45,7% in recreation / hospital areas 22,9-50,6 in city traffic; 27,7-55,4% in business and residential areas. Conclusions The results confirm that urban noise seriously disturbs people. It was established that about a half of the population was highly annoyed which poses a serious challenge for public health. The results have social, health and economic importance for the population. Activities to reduce the noise level could also stimulate economic, health, social and community programs for sustainable development aiming to preserve and improve human health. Acknowledgment: Supported by the Ministry of Education and Science of the Republic of Serbia - Project “Biosensing Technologies and Global System for Continuous Research and Integrated Management”, No.43002 Key messages Continous noise monitoring is important for understanding the impact of noise on human health. About a half of the population was highly annoyed by noise, which poses a big challenge for public health in urban areas.

scholarly journals Carbonaceous aerosols in Norwegian urban areas

2009 ◽  
Vol 9 (6) ◽  
pp. 2007-2020 ◽  
Author(s):  
K. E. Yttri ◽  
C. Dye ◽  
O.-A. Braathen ◽  
D. Simpson ◽  
E. Steinnes
Keyword(s):  
Organic Carbon ◽  
Urban Areas ◽  
Water Soluble ◽  
Carbonaceous Aerosols ◽  
Residential Areas ◽  
Urban Background ◽  
Wood Burning ◽  
Pm10 And Pm2.5 ◽  
The Impact ◽  
Suburban Site

Abstract. Little is known regarding levels and source strength of carbonaceous aerosols in Scandinavia. In the present study, ambient aerosol (PM10 and PM2.5) concentrations of elemental carbon (EC), organic carbon (OC), water-insoluble organic carbon (WINSOC), and water-soluble organic carbon (WSOC) are reported for a curbside site, an urban background site, and a suburban site in Norway in order to investigate their spatial and seasonal variations. Aerosol filter samples were collected using tandem filter sampling to correct for the positive sampling artefact introduced by volatile and semivolatile OC. Analyses were performed using the thermal optical transmission (TOT) instrument from Sunset Lab Inc., which corrects for charring during analysis. Finally, we estimated the relative contribution of OC from wood burning based on the samples content of levoglucosan. Levels of EC varied by more than one order of magnitude between sites, likely due to the higher impact of vehicular traffic at the curbside and the urban background sites. In winter, the level of particulate organic carbon (OCp) at the suburban site was equal to (for PM10) or even higher (for PM2.5) than the levels observed at the curbside and the urban background sites. This finding was attributed to the impact of residential wood burning at the suburban site in winter, which was confirmed by a high mean concentration of levoglucosan (407 ng m−3). This finding indicates that exposure to primary combustion derived OCp could be equally high in residential areas as in a city center. It is demonstrated that OCp from wood burning (OCwood) accounted for almost all OCp at the suburban site in winter, allowing a new estimate of the ratio TCp/levoglucosan for both PM10 and PM2.5. Particulate carbonaceous material (PCM=Organic matter+Elemental matter) accounted for 46–83% of PM10 at the sites studied, thus being the major fraction.

scholarly journals Modeling Charging Infrastructure Requirements to Achieve a Holistic E-Mobility Integration in Regional Energy Systems

2021 ◽  
Author(s):  
Dominik Husarek ◽  
Simon Paulus ◽  
Michael Metzger ◽  
Vjekoslav Salapic ◽  
Stefan Niessen
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Mobility Model ◽  
Residential Areas ◽  
Charging Infrastructure ◽  
Charging System ◽  
Charging Station ◽  
Grid Operators ◽  
Regional Energy Systems ◽  
The Impact

Since E-Mobility is on the rise worldwide, large Charging Infrastructure (CI) networks are required to satisfy the upcoming Charging Demand (CD). Understanding this CD with its spatial and temporal uncertainties is important for grid operators to quantify the grid impact of Electric Vehicle integration and for Charging Station (CS) operators to assess long-term CI investments. Hence, we introduce an Agent-based E-Mobility Model assessing regional CI systems with their multi-directional interactions between CSs and vehicles. A Global Sensitivity Analysis (GSA) is applied to quantify the impact of 11 technical levers on 17 relevant charging system outputs. The GSA evaluates the E-Mobility integration in terms of grid impact, economic viability of CSs and Service Quality of the deployed Charging Infrastructure (SQCI). Based on this impact assessment we derive general guidelines for E-Mobility integration into regional systems. We found, inter alia, that CI policies should aim at allocating CSs across different types of locations to utilize cross-locational effects such as CSs at public locations affecting the charging peak in residential areas by up to 18%. Additionally, while improving the highway charging network is an effective lever to increase the SQCI in urban areas, public charging is an even stronger lever in rural areas.

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