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Showing 5 results for Natural Hazards

Abdolali Torabi, Sadroddin Motavlli, Gholamreza Janbaz Ghobadi,
Volume 0, Issue 0 (3-1921)
Abstract

Natural disasters, which are part of the process of human life and their number and diversity are increasing every day, are a major challenge to achieve sustainable development of human societies. Hence, the prevailing view of focusing solely on reducing vulnerability to increasing resilience to disasters has shifted. The purpose of this study is to explain the components of urban resilience against natural hazards with emphasis on floods in Behshahr. The research method in this research is descriptive-analytical and in addition to documents and library studies, a questionnaire was used to collect information. The statistical population of the present study includes two groups of citizens living in the neighborhoods around the four rivers of Behshahr. After collecting field information that was completed using a questionnaire tool, from SPSS, MINITAB and PLS software and using multi-criteria decision making (SAW) methods to investigate the situation and explain the components of urban resilience in Against natural hazards such as floods and GIS software was used to zoning areas based on flood resilience. The results show that among the dimensions of resilience, the economic dimension has the highest weight and is in the first place and the physical, infrastructure and environmental dimension has the lowest weight and is in the last place. Neighborhoods around the rivers of Behshahr city are ranked based on flood resistance status, which shows that Shahed neighborhood is in the first place and Borzoo neighborhood is in the last place.
 
Mahsa Asadi Aziz Abadi, Keramat Alah Ziari, Mohsen Vatan Khahi,
Volume 20, Issue 56 (3-2020)
Abstract

A city is a vibrant, dynamic, and evolving phenomenon that grows and spreads over time and space, and is exhausted and degraded.It also faces crises such as natural hazards and artifacts, resulting from human relationships and physical elements, on the one hand, and social, economic, cultural, geographical, political, and historical conditions on the other. The deteriorated urban fabric, which has physical, functional and operational deterioration, are resistant to the above-mentioned crises and has low vulnerability. Therefore, the need of intervening in these fabrics is crucial for balancing, coordinating the foundations of social life, and improving the urban structure. In this regard, in this research, priority is given to the dimension of resilient deteriorated urban fabric based on a disaster resilience of place model which is one of the models of urban resilience measurement. This research is a descriptive-analytical according to method and is developmental-applied research in terms of the purpose. Also, Expert Choice software and AHP model are used to analyze the collected data by using a questionnaire. The results of the research indicate that, in three macro areas of Karaj, Hesarak and Mehrshahr, the physical-environmental resilience dimension has the highest weight and organizational-institutional resilience has the least weight. Overall, regarding prioritization of resilience dimensions, criteria and indicators, an increasing per capita of vital use in study areas, changing the economic structure of residents, as well as increasing the skill and coherence of citizens to deal with hazards and crises are important.

Mr Mozaffar Mohamadkhani, Dr Zeynab Karke Abadi, Abbas Arghan,
Volume 20, Issue 59 (1-2021)
Abstract

The structure of urban resilience consists of four dimensions: social, economic, institutional and physical. In the desired situation, a resilient city has a strong local society with a dynamic and sustainable economy that is governed institutionally and institutionally in a participatory manner. As a result of these super-physical factors, the city is formed in a cohesive manner and no withering is observed at any point. The purpose of this study is to assess the resilience and stability of Semnan in the face of natural hazards (earthquake). The research method in this study is descriptive-analytical and its statistics and information have been obtained using a questionnaire. The statistical population of this study was citizens living in Semnan city. Using Cochranchr('39')s formula, a sample of 384 people was selected from them by random sampling method. To assess the validity (validity), using face validity, the opinions of related people were examined and its reliability was assessed using Cronbachchr('39')s test in the SPSS software environment equal to / 863. It was found to indicate high coordination and reliability of the data. In data analysis, descriptive and inferential statistical tests were used in Spss software. percentage; At the level of inferential statistics, Pearson correlation coefficient and sample titech test as well as neural network model were used to examine the relationship between variables. Findings showed that the socio-cultural dimension with an average rank of 2.59 and the physical dimension with an average rank of 3.05 and the economic dimension with an average rank of 2.17 and finally the institutional-organizational dimension with an average rank of 2.56 show the current situation of resilience in Semnan.
Parichehr Mesri Alamdari,
Volume 21, Issue 60 (3-2021)
Abstract

One major issue to be considered in today's cities is their resilience which plays an important role in reducing the damage and casualties caused by various natural hazards. These hazards often have devastating effects on human settlements, and resilient settlements in various managerial, physical, economic, and social aspects is a great way to enhance the effectiveness of cities in dealing with a variety of potential and unexpected crises. In this regard, addressing the resilience of cities in different aspects reveals the importance and necessity of research. The purpose of this study is to investigate the factors influencing the resilience of cities to natural disasters. The research method is applied in terms of purpose and descriptive-analytical in terms of methodology. The statistical population includes specialists and experts. FVIKOR model is used to analyze the components and characteristics, and EDAS method is used to show the condition of areas in terms of resilience. The results from Fuzzy VIKOR show the institutional component in the first place with the most score (zero) and the economic component in the last place with the score of 0.287. Also, the results from EDAS in different aspects of the studied areas show high resilience of districts 2 and 5 and low resilience of districts 4 and 8. Generally, more than 50% of Tabriz districts are less resilient.
 
Hossein Sharifi, Mehrdad Ramezanipour, Leila Ebrahimi,
Volume 24, Issue 75 (2-2025)
Abstract

Today, human settlements around the world are exposed to natural hazards for a variety of reasons. These risks, which bring with them a lot of human and financial losses, require preventive measures. The purpose of this study is to investigate the development of urban space in order to deal with environmental hazards in Noor city. The method of this research is also descriptive. Data collection is using library and documentary studies and questionnaires. In order to analyze the questionnaires using ANP method and fuzzy logic method, evaluate each of the criteria and determine their importance coefficients. Based on the results, spatial assessment was performed using ArcGis software and hazard zones were identified. According to the results of risk potential zoning, the northern and southern areas of the city have the highest risk potential. To predict the development of residential areas, the combined Markov chain model and cellular automation were used. The results showed that the continuous expansion of built areas in recent decades has caused rapid changes in land use and the built areas of the city has increased from 2.43% of the total area in 2010 to 3.68% in 2019. The results also showed that regardless of the natural hazards, the built-up areas will increase and as a result of urbanization, the built-up areas will be more prone to high-risk lands. However, if sustainable development policies are fully implemented, cities and built-up areas will be able to maintain their development spaces from high-risk areas for the benefit of the city and its residents.

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