scholarly journals Mapping of Flood Zones in Urban Areas through a Hydro-climatic Approach: the Case of the City of Abha

2021 ◽  
Vol 10 (2) ◽  
pp. 1
Author(s):  
Allaoua Ansar ◽  
Azaiez Naima
Keyword(s):  
Urban Areas ◽  
Urban Landscape ◽  
Hydrological Cycle ◽  
Flood Hazard ◽  
Statistical Processing ◽  
Natural Phenomenon ◽  
Human Intervention ◽  
Local Stakeholders ◽  
The City

Flooding is a natural phenomenon of the hydrological cycle, but it has become an urban concern in many cities around the world. Due to human intervention on the functioning of hydrosystems through infrastructure, the channelling of watercourses, the redirection of the flow and the inevitable extension of the urban landscape, floods have become a growing urban hazard. Several cities are currently facing very frequent flash floods. These floods are of various types and several factors are at the origin of their manifestation, which leaves its understanding and prevention for local stakeholders a long-term process that requires a colossal amount of work among several multidisciplinary researchers. Without denying the scientific consensus on the role of climate change, currently floods are largely caused by the senseless and irresponsible behaviour of humans. Among the cities in Saudi Arabia facing the risk of flooding is the city of Abha located in the southwest of the country, the focus of this research. It is subject to recurrent and devastating floods caused by several factors. Controversial topography, dissected orography, aggressive rainfall, accelerated and unregulated urban growth, and irresponsible human intervention are all factors that aggravate this problem. The resolution of this problem, or at least the minimization of its consequences, requires a rigorous and carefully studied approach. The appropriate knowledge by local stakeholders must be reinforced by a methodological and cartographic assessment of this phenomenon in order to mitigate its consequences. The main objective of this work is to make cartographic and methodological contributions to acquire additional knowledge on the flood hazard in the city of Abha through a statistical processing of rainfall data for the period 1978-2018, a mapping of the factors intervening on the runoff and its various behaviors and finally a synthetic analysis.

scholarly journals Intra-urban connectedness, policy mobilities and creative city-making: national conservatism vs. urban (neo)liberalism

2020 ◽  
Vol 27 (3) ◽  
pp. 246-258 ◽  
Author(s):  
Thomas Borén ◽  
Patrycja Grzyś ◽  
Craig Young
Keyword(s):  
European Union ◽  
Cultural Policy ◽  
Urban Policy ◽  
Creative Economy ◽  
Creative City ◽  
Local Stakeholders ◽  
Policy Mobilities ◽  
The City

This article aims to advance the literature on policy mobility by decentring the primacy of mobility itself and focusing on understanding what cities do in order to ‘arrive at’ localized versions of urban policy in relation to globally circulating ideas around creativity. The paper explores the performance of a particular local ‘creative economy’ in terms of institutional and strategic adjustments, key drivers and individuals and events, and the role of long-term local, national and international influences on ‘creative cityness’. It does this through an analysis of cultural and creativity policy and local stakeholders in the cultural policy scene in Gdańsk, Poland, focusing on the local performative aspects of mobile policies and arguing the need to understand the formation of a ‘common local project’ as a form of intra-urban connectedness alongside inter-urban connectedness. The paper extends the range of contexts in which the ‘creative city’ has been analysed to include post-socialist, post-European Union accession Central and Eastern Europe, thus making an original contribution by studying these issues in the context of the complex multi-scalar relations between the city, national government and the supranational European Union and the ideological conflict between national authoritarian neoliberalism and urban and supranational scale (neo-)liberalism.

Post-Disaster Urban Recovery Monitoring in Pisco After the 2007 Peru Earthquake Using Satellite Image

2014 ◽  
Vol 9 (6) ◽  
pp. 1059-1068 ◽  
Author(s):  
Tomoyo Hoshi ◽  
◽  
Osamu Murao ◽  
Kunihiko Yoshino ◽  
Fumio Yamazaki ◽  
...  
Keyword(s):  
Satellite Imagery ◽  
Urban Areas ◽  
Satellite Image ◽  
Recovery Process ◽  
Visual Interpretation ◽  
Field Surveys ◽  
Recovery Processes ◽  
The City ◽  
Post Disaster

Pisco was the area most damaged by the 2007 Peru earthquake. The purpose of this research is to develop possibilities of using satellite imagery to monitor postdisaster urban recovery processes, focusing on the urban change in Pisco between 2007 and 2011. To this end, the authors carried out field surveys in the city in 2012 and 2013 and also examined previous surveys to determine that building reconstruction peaked between 2008 and 2009. After analyzing the five-year recovery process, the authors compared its reconstruction conditions by visual interpretation with those by image analysis using satellite image. An accuracy of 71.2% was achieved for the visual interpretation results in congested urban areas, and that for developed districts was about 60%. The result shows that satellite imagery can be a useful tool for monitoring and understanding post-disaster urban recovery processes in the areas in which conducting long-term field survey is difficult.

scholarly journals Microbiological Air Monitoring and Long-Term Evaluations of Selected Urban Areas in the City of Tirana

2021 ◽  
Vol 9 (1) ◽  
pp. 13
Author(s):  
Erjon Troja ◽  
Luljeta Pinguli ◽  
Rozana Troja ◽  
Eltion Dhamo ◽  
Elena Muça
Keyword(s):  
Urban Areas ◽  
Aspergillus Terreus ◽  
Viable Count ◽  
Indoor Environments ◽  
Total Viable Count ◽  
National Program ◽  
Scientific Evaluation ◽  
Year 2000 ◽  
The City

The described experimental study, performed over the years, includes the quantitative and qualitative monitoring of the presence of microorganisms of air in outdoor and indoor environments of the Albanian Capital, Tirana, during a time when large demographic movements, accompanied by important urban interventions and infrastructural changes, have been part of our lives. A project, part of the National Program in Biotechnology (R & D—the year 2000), was the first support to obtain a database on microbiological air pollution in selected urban areas in Tirana and isolate and identify specific air microbial pollutants. The results obtained were an incentive to continue further with additional scientific evaluation monitoring research, which included the years 2011 to 2015 and then those of 2016–2020. Over the years, there has been a significant reduction in pollutant microbial loads (for selected outdoor areas of the center of Tirana, the total discovered loads decreased from values of the order 105–106, to currently about 102, for the same areas). A fluctuation in indoor microbial loads was observed in many cases. Additionally, a prominent presence of typical environmental fungi pollutants such as Aspergillus niger, Aspergillus flavus, Aspergillus terreus, as well as bacterial pollutants, cocci, and bacilli (typical Bacillus megatherium) was identified during a Total Viable Count (TVC) and other microbiological tests of identification.

scholarly journals Integrasi Daya Tarik Wisata Kota Denpasar Bali

2017 ◽  
Vol 9 (1) ◽  
pp. 48-66
Author(s):  
I Gusti Bagus Rai Utama
Keyword(s):  
Urban Areas ◽  
Local Community ◽  
Shopping Malls ◽  
Traditional Markets ◽  
Multiple Components ◽  
City Tourism ◽  
Historical Monuments ◽  
Tourism Attractions ◽  
The City

The model of the development of an integrated city tourism urgently to be done for the short- term and long-term. Develop urban area is an attempt to increase revenue through taxes hotels, restaurants, and simultaneously increase the economic activity in urban areas. The good management of the city tourism will realize the satisfaction of all parties. Some of the cities in Indonesia deserves to be developed as a city tourism when viewed from multiple components as tourism attractions. These components are like: the town hall, roads that meaningful myth, historical monuments, culinary, college or university, shopping malls, traditional markets, squares, parks, museums, fairs, and other attractions. To be able to make it as a tourist product, the necessary integration related aspects comprising aspects of the attraction of the city, the transportation aspect, the aspect of main and supporting facilities, and institutional aspects such as the attributes of human resources, systems, and other related institutions. The city of Denpasar as as a business center of the activity in case the tourists both domestic and foreign tourists, require restructuring. Structuring urgent to do is structuring the local community business centers, the arrangement of lodges or hotels, and the area attractions management.

scholarly journals Features of the formation of urban heat islands effects in tropical climates and their impact on the ecology of the city

2019 ◽  
Vol 91 ◽  
pp. 05005 ◽  
Author(s):  
Minh Tuan Le ◽  
Nguyen Anh Quan Tran
Keyword(s):  
Urban Areas ◽  
Building Materials ◽  
Urban Landscape ◽  
Urban Climate ◽  
Ecological Systems ◽  
Urban Heat Islands ◽  
Heat Islands ◽  
Urban Heat ◽  
Tropical Climates ◽  
The City

The cumulative heating in some urban areas due to the urban growth and its types of industry, energy and transport, is the effect of urban heat island (UHI). It is recognized as one of the characteristics of the urban climate. The temperature increase caused by the effect (UHI) affects the energy flow in urban ecological systems, creates an unusual urban climate. By studying the effects of climate factors, local building materials to optimize energy efficiency, urban landscape, UHI phenomenon could be significantly moderated.

scholarly journals Short-term temperature variability in a tropical Andean city Manizales, Colombia

2020 ◽  
Vol 17 (2) ◽  
pp. 129-139
Author(s):  
Jeannette Zambrano Nájera ◽  
Victor Delgado ◽  
Jorge Julian Vélez Upegui
Keyword(s):  
Urban Areas ◽  
Climatic Variability ◽  
Temporal Analysis ◽  
Temperature Structure ◽  
Tropical Andes ◽  
Temporal Complexity ◽  
Short And Long Term ◽  
Available Information ◽  
The City

The climatic variability in the Tropical Andes area is high, both spatially and temporally, and its analysis must be carried out both in the short and long term depending on the available information. This type of spatial-temporal analysis provides tools for planning and environmental management in urban areas, given its high complexity. This investigation focuses on a diagnosis of the diurnal cycle and the analysis of the monthly temperature structure in 13 stations located in the city of Manizales, Caldas (Colombia). This applied research aims to understand the behavior of the temperature in a tropical Andes city in Colombia, where the spatial-temporal complexity of this variable improve the urban and hydrological planning strategies. Results correspond to what has been previously defined by other authors for the Andean zone: city temperature shows very stable patrons, yet important variations in temperature range across the city are appreciated during the day.

scholarly journals Assessment of the Hydraulic Performance of the Urban Drainage System due to Climate Change using DHI MIKE URBAN

2021 ◽  
Vol 2 (4) ◽  
pp. 261-267
Author(s):  
M Maryam ◽  
R Kumar ◽  
N Thahaby
Keyword(s):  
Hydrodynamic Model ◽  
Urban Areas ◽  
Flood Hazard ◽  
Climatic Variability ◽  
Drainage System ◽  
Urban Drainage ◽  
Urban Flooding ◽  
Present Context ◽  
Flooding Events

Changes in climate, waterlogging hazards and regional floods are more prominent in present context. The paper reviews potential of flood hazard in dense urban areas, using GIS-based 1-D hydrodynamic model (MIKE URBAN). The major factor contributing to the urban waterlogging in recent decades is the climatic variability and thus the long-term variations of precipitation and drainage system of an urban area were evaluated. MIKE URBAN (1-D) hydrodynamic model can be used to comprehensively simulate inundation processes. The model simulates the processes of rainfall and runoff, urban drainage, and flooding. MIKE URBAN can be used to appraise the potential immersion dangers of any planned drainage system. This paper reviews the increasingly urban flooding events expected in the future for the different cities across the globe. Thus, the surface runoff processes of cities need to examine the regional drainage system.

scholarly journals Contributions to reduce the flood problems in critical points of the micro drainage system in the city of Carazinho

2019 ◽  
Vol 23 ◽  
pp. 6
Author(s):  
Carolina Pasquetti Koppe ◽  
Vinícius Scortegagna ◽  
Virgínia Meneguzzi ◽  
Anelise Sertoli Lopes Gil ◽  
Matheus De Conto Ferreira ◽  
...  
Keyword(s):  
Urban Environment ◽  
Flow Rate ◽  
Surface Runoff ◽  
Urban Areas ◽  
Hydrological Cycle ◽  
Drainage System ◽  
Control Measures ◽  
Control Devices ◽  
And Control ◽  
The City

With the emergence of excessive flooding in the urban environment, the need for unconventional drainage control measures within the limitations of conventional solutions becomes evident. In the present study, infiltration trenches and reservoirs that collect and reserve rainwater were designed as control devices, attenuating the socio-environmental impacts caused by waterproofing of urban areas in the hydrological cycle and in the behavior of the hydrographic basins in question. The measurements were made for two flooding points found in the city of Carazinho – RS, located on Marquês do Pombal Street and São Bento Avenue, due to the obstruction of gutters and street inlets, paving and waterproofing of the ground due to urbanization, lack of maintenance and cleaning of the micro drainage system along with the inability of the system to collect all the volume of water from the runoff. The reductions in flow rate in these areas through the use of trenches were 16% and 15% for the first and second flooding point, respectively, while the use of the delay reservoirs together with the infiltration trenches resulted in a 29% reduction in the first flooding point and 27.5% in the second flooding point. Therefore, it is evident that the use of unconventional control measures is vital to the reduction of the peaks of the flow rate and control of the surface runoff.

scholarly journals Urban Commerce and Protected Cultural Landscape

2018 ◽  
Author(s):  
María Griñán Montealegre ◽  
Mónica López Sánchez
Keyword(s):  
Urban Areas ◽  
Scientific Community ◽  
Cultural Landscape ◽  
Essential Role ◽  
Urban Landscape ◽  
Commercial Activity ◽  
Historical Landscape ◽  
The Impact ◽  
The City

From the analysis of the urban landscape, the investigation focuses on the role of commerce in historical urban areas and their relations at present with the landscape, in relation to the preservation of heritage values. Trade plays an essential role in historical urban areas, both in its past and in its present, since it is part of the urban landscape, creating it and modifying it but also preserving it. The historical protected urban areas contain diverse elements that reflect the impact of the commercial activity existing in the city throughout history. At present, the urban landscape of commercial activity is made up of a multiplicity of typologies and formats. Trade interacts with the historical landscape in which it is developed and the heritage values of that landscape, using them to strengthen its strategies of attraction, differentiation and sales. The shop owners contribute to the preservation of historic urban areas by maintaining the commercial function in them. Therefore, we affirm that the role of commercial activity in the preservation of urban protected areas is essential. However, further research is needed because the scientific community specializing in the management of cultural heritage has not deepened in this aspect.

Ephesus in the Late Roman and Early Byzantine Period: Changes in its Urban Character from the Third to the Seventh Century ad

2007 ◽  
Author(s):  
S. LADSTÄTTER ◽  
A. PÜLZ
Keyword(s):  
Urban Landscape ◽  
Conclusive Evidence ◽  
Seventh Century ◽  
The Third ◽  
Public Areas ◽  
History Of ◽  
Byzantine Period ◽  
Urban Character ◽  
The City

The third century marked a profound change in the urban landscape of Ephesus and proved to exert a profound influence on the city's later development. There is conclusive evidence for catastrophic disasters when the city was afflicted by a series of earthquakes which led to a temporary downturn in its economic circumstances. These destructive earthquakes not only had long-term consequences for the city's appearance, but also affected the very foundations of urbanism. This chapter traces the history of Metropolis Asiae after the earthquakes of the third and fourth centuries. The archaeological evidence proves that rebuilding took place and within public areas, such as agorae or buildings along the roads and included fountains and baths. The work was not limited only to the reconstruction of buildings but efforts were made to restore the splendid appearance of the city, reflecting the restoration of its high urban status and commercial importance. This chapter also describes the city's numerous churches that graphically attest to the growing importance of Christianity as the state religion.

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