Remote sensing and Gis
hamed bahrehvar; akbar asgharizamani; bakhtiyar feizizadeh
Abstract
Earthquake is a natural phenomenon that seriously threatens urban communities, in the meantime, the city of Tabriz or its location in the country's earthquake-prone belt has attracted more attention from urban planners. This research examines the physical-environmental resilience of Tabriz city ...
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Earthquake is a natural phenomenon that seriously threatens urban communities, in the meantime, the city of Tabriz or its location in the country's earthquake-prone belt has attracted more attention from urban planners. This research examines the physical-environmental resilience of Tabriz city in the face of an earthquake using the FAHP method, so that by obtaining information, useful measures can be taken in the face of an earthquake and the effects of damage and possible casualties can be reduced with preventive measures. The components used in this research are the environmental and physical components, which are stratified in the GIS environment based on the results of the spatial analysis process and the combination of decision-making models with the integration of effective layers in resilience, as well as extracting The overall resilience map of the studied area has been studied, and based on the results of the analysis, it has been determined that 6832.18 hectares of the total areas of Tabriz have a high resilience level, 11546.88 hectares have a relatively high resilience level, 2473.53 hectares have a relatively low resilience level, and 1904.63 hectares have a relatively low resilience level. 1102.39 hectares have low resilience and 1102.39 hectares have very low resilience. The vulnerability and lack of resilience of the ten regions are as follows: the regions with low resilience are 4, 10, 3, 1 respectively. , 2, 5, 7, 8, 6, 9.
Keywords: resilience, earthquake, FAHP, GIS, Tabriz
Geography and Urban Planning
Hassan Mahmoudzadeh; Ali esmailzadeh laleh
Abstract
Dust at different levels in the city can be a good indicator of the presence of these heavy metals in the city, therefore the main goal of the present study is the spatial analysis of heavy metal contamination of surface dust in the northwestern area of Tabriz city. For analyzing, Moran's index, hot ...
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Dust at different levels in the city can be a good indicator of the presence of these heavy metals in the city, therefore the main goal of the present study is the spatial analysis of heavy metal contamination of surface dust in the northwestern area of Tabriz city. For analyzing, Moran's index, hot spot analysis and ANOVA test were used in Arc Gis10.8 and Spss20 software. The studied heavy metals included; lead, chromium, manganese, zinc, copper and iron. For this purpose, samples were taken from 12 stations in the area. After the initial preparation, the concentration of heavy metals in the samples was obtained using an atomic absorption spectrometer. Based on the findings of the Moran index, the research showed that the spatial distribution of heavy metal pollution follows a cluster pattern, . Moran's index analysis shows the highest z score of 204.24 and 140.12 respectively for zinc and copper metal, which shows the intense spatial concentration of these two polluting elements in the studied area.The results of the ANOVA test also showed that the level of heavy metal pollution changes with the type of use. In fact, it can be said that the spatial distribution of heavy metal pollution differs according to the type of urban use. The most observed pollutions were in commercial-service, administrative and law enforcement uses.
hamed bahrehvar; akbar asgharizamani; bakhtiyar feizizadeh
Abstract
Earthquake is a natural phenomenon that seriously threatens urban communities, in the meantime, the city of Tabriz or its location in the country's earthquake-prone belt has attracted more attention from urban planners. This research examines the physical-environmental resilience of Tabriz city in the ...
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Earthquake is a natural phenomenon that seriously threatens urban communities, in the meantime, the city of Tabriz or its location in the country's earthquake-prone belt has attracted more attention from urban planners. This research examines the physical-environmental resilience of Tabriz city in the face of an earthquake using the FAHP method, so that by obtaining information, useful measures can be taken in the face of an earthquake and the effects of damage and possible casualties can be reduced with preventive measures. The components used in this research are the environmental and physical components, which are stratified in the GIS environment based on the results of the spatial analysis process and the combination of decision-making models with the integration of effective layers in resilience, as well as extracting The overall resilience map of the studied area has been studied, and based on the results of the analysis, it has been determined that 6832.18 hectares of the total areas of Tabriz have a high resilience level, 11546.88 hectares have a relatively high resilience level, 2473.53 hectares have a relatively low resilience level, and 1904.63 hectares have a relatively low resilience level. 1102.39 hectares have low resilience and 1102.39 hectares have very low resilience. The vulnerability and lack of resilience of the ten regions are as follows: the regions with low resilience are 4, 10, 3, 1 respectively. , 2, 5, 7, 8, 6, 9.Keywords: resilience, earthquake, FAHP, GIS, Tabriz
Remote sensing and Gis
Samira Esmaeeli
Volume 2, Issue 3 , September 2022, , Pages 23-1
Abstract
With the development of urbanization and excessive interference of humans in the environment, large amounts of agricultural and forest areas have been replaced by houses, industrial areas, and other infrastructures. One of the negative effects of industrialization is the sharp increase in the temperature ...
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With the development of urbanization and excessive interference of humans in the environment, large amounts of agricultural and forest areas have been replaced by houses, industrial areas, and other infrastructures. One of the negative effects of industrialization is the sharp increase in the temperature of cities and the creation of temperature differences between urban areas and the surrounding areas, which is known as the heat island. The main goal of this research is to estimate the temperature of the earth''s surface and investigate the effects of urbanization on the temperature of the earth''s surface in the city of Tabriz. For this purpose, satellite data and remote sensing because of their wide coverage; are Used. In this method, the temperature of the earth''s surface has been calculated using the information of a thermal band (Landsat 8 satellite) and after conforming to the land use map, the temperature of different uses of Tabriz city has been estimated. The results of the research show that there is a direct relationship between the spatial-temporal changes in the cities (including the change in land use and the reduction of vegetation mass) in the city of Tabriz and the increase in the temperature of the earth''s surface, and satellite images (remote sensing) are a very suitable tool for evaluating heat and temperature. They are the surface of the earth.
Remote sensing and Gis
Abolfazl Ghanbary; Ahmad Nikdel
Volume 2, Issue 2 , June 2022, , Pages 71-53
Abstract
The method of collecting information is documentary and field. In this research, an intelligent system based on multi-criteria decision systems is provided to find and route suitable parking in the city of Tabriz. This system is designed in two levels of comprehensive parking management and internal ...
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The method of collecting information is documentary and field. In this research, an intelligent system based on multi-criteria decision systems is provided to find and route suitable parking in the city of Tabriz. This system is designed in two levels of comprehensive parking management and internal management of local parking under the web and the main part of parking performance based on Mobile- GIS. To collect and receive the data in this research used, a Web GIS system, OSM (Open Street Map), and Android studio software was used to process the data and design the proposed application. The purpose of this study is to create a suitable environment for searching and finding parking and reducing the problems caused by it. Users use this application to connect to the parking's database and by enter the weight of the criteria based on the importance of each to find the most suitable parking. It is also possible to search automatically with preset settings. Finally, the parking route is displayed on the map as audio and graphs for the user. Due to the historical and tourism situation of Tabriz and the increase of urban transportation traffic, especially in the city center, has been selected as the study area of this study. The results show that the proposed application reduces the problem of users in finding parking and also has a significant effect on reducing fuel consumption and thus air pollution.
Remote sensing and Gis
ahmad nikdel; Bakhtiar Feizizadeh
Volume 2, Issue 2 , June 2022, , Pages 106-89
Abstract
Nowadays, subsidence is a terrestrial hazard caused by human and natural activity around the world and needs careful consideration in many countries (e.g. USA, UK, Australia, China, Egypt, France, Germany, India, Iran, Italy, Japan, Mexico, Poland, Saudi Arabia, Sweden and the Netherlands). It should ...
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Nowadays, subsidence is a terrestrial hazard caused by human and natural activity around the world and needs careful consideration in many countries (e.g. USA, UK, Australia, China, Egypt, France, Germany, India, Iran, Italy, Japan, Mexico, Poland, Saudi Arabia, Sweden and the Netherlands). It should be noted that subsidence events have been observed in more than 150 countries and regions around the world. Today, subsidence-affected areas are a major concern from different perspectives on socio-economic, environmental and conservation issues. The present research is applied in terms of purpose and descriptive-analytical research method. In this research, documentary sources and library resources and satellite images have been used. In the present study, by combining GIS and multi-criteria decision making systems, the potential for the risk of subsidence risk in the city of Tabriz was zoned. After reviewing the research background and research, eleven factors affecting the occurrence of subsidence risk: rainfall, slope, evaporation, geology, land use, runoff height, distance from the fault, drainage network density, distance from the river, vegetation index and depth Groundwater was identified and weighed using the ANP process. After standardizing the layers in ArcGIS, all indicators were combined with the Weighted Overlay function. According to the results of the total settlements located within the study area, 20% of settlements have high subsidence potential, 36% have high risk potential, 18% have medium risk potential, 14% have low risk potential and 12% have potential range. Subsidence is very low.
