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.
