Analyzing the Level of Risk in Urban Areas for Crisis Management After Earthquake Using FAHP method in GIS (Case study: 1th district of Ahvaz)
Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Introduction

Natural hazards are a natural phenomenon that, in the immediate vicinity of human settlements, pose a threat to people, structures, or capital, and may lead to a crisis. (Ahanchi, 1997: 8). These natural disasters and natural disasters are usually considered to be the most catastrophic events that affect the basic structures of a particular system (Rosenthal & Charles, 1989 º Ponis & Ntalla, 2016:669). In the meantime, the most important issue that can create natural hazards in a country is the death toll that the mortality and severity of injuries, as well as financial losses, are due to the magnitude of the incidents (Borna et al., 2011: 82). Cities as a gathering place for the human population are not excluded from the occurrence of these natural hazards (Khakpour et al., 2011: 2) and In particular, metropolitan areas are more vulnerable to potential hazards due to their high density of buildings, their infrastructure and their human population (Hashemi & Alesheikh, 2011: 1607 ; Montoya & Masser, 2005). The purpose of this study is to use the GIS as one of the top sciences in decision-making, identification, assessment, analysis and presentation of correct approaches in the analysis of the urban land risk profile in order to manage the post-earthquake crisis using The FAHP method is.
Methods and

Methodology

This research is an applied and descriptive-analytical method. This is a logical and systematic sequence of related steps. These steps or phases are: 1) Data collection 2) Data evaluation 3) Data analysis 4) Prediction based on analysis . In the present study, firstly, according to library studies, the information was collected and according to their importance, the criteria and indicators needed for use in the next stages were classified. In Figure 4, the conceptual model of the entire research is shown.
Discussion and

Results

After the production of the required layers, the analysis of the data was done by fuzzy hierarchical analysis method. The vague data from triangular judgments turned into fuzzy numbers and, with operations on fuzzy sets, the priority of the elements was determined at each level of the hierarchy. After the formation of the pair comparison matrix and the calculation of each matrix row as well as the magnitude of each of them, the weight of the criteria and options in the paired matrix were also calculated. After normalizing the results, the final weight vector was obtained. In the final stage, the layers were normalized after standardization, based on the results of the paired comparison matrix using the FAHP method. Finally, the model has been modeled and the final map of Ahvaz area 1 has been obtained.
The outline map is divided into nine classes, highly unfavorable, very undesirable, undesirable, relatively unfavorable, moderate, relatively desirable, desirable, highly desirable and desirable and the coverage of 9 classes was taken from the total area of blocks and construction areas of the region. Based on the results obtained from this study, in the central and central part of the region, the classes were severely undesirable to the unfavorable.

Conclusion

Crisis management is one of the key issues in the country and it requires a special attitude of officials to address this issue. Among them, GIS can be used as one of the most advanced spatial analysis techniques and technologies for saving time (especially when incident) and cost, as well as proper management and optimal decision making. The main objective is to enable computers as much as possible to solve very complex scientific problems with the same ease and simplicity that the human mind is capable of understanding and making decisions quickly and appropriately. Therefore, the use of fuzzy concepts in decision making is very important. Therefore, in this paper, we have tried to provide a comprehensive approach in order to select the sensitive and sensitive points of the study area using fuzzy standardization methods as well as fuzzy multi-criteria decision making (FAHP). Therefore, after determining the risk map of Ahwaz area 1 in order to more accurately, better and more accurately show the hazardous areas, the final map is divided into nine classes. According to the results of this research in Ahvaz, one of the oldest and one of the metropolitan areas of the country, the core and central core of Ahwaz is in many ways highly risky at the time of the incident.

Language:
Persian
Published:
Geography and Development Iranian Journal, Volume:16 Issue: 50, 2018
Pages:
161 to 180
magiran.com/p1796090  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!