Abstract
Abstract. Urban planning starts with the selection of suitable sites. The main factors and components for site selection are the geological-geotechnical parameters that directly affect the natural hazards, such as landslide and flood, construction costs and the location and distribution of existing infrastructure. The presence and accuracy of up-to-date maps in planning are very important. With the increase of high resolution Earth observation satellites, the required data can be obtained with high temporal frequency and spatial availability. From these data, the base parameters for planning can be extracted with semi- or fully-automatic methods. Among the Earth observation satellites, the Sentinel-2 mission of European Space Agency (ESA) provides high resolution optical images and the data are freely available also at different processing levels such as orthorectified images. In this study, the possibility of the landslide susceptibility map production which should be one of the base maps in urban planning by using Sentinel-2 satellite images was investigated in Mamak District of Ankara City, Turkey. The land cover and land use data were produced from Sentinel-2 images by using a supervised classification method in SNAP Tool provided by ESA. The lithological definitions were received from the General Directorate of Mineral Research and Explorations. The topographical parameters such as slope, aspect, topographic wetness index, etc. were extracted from a high resolution digital terrain model (DTM) of the area. Manually extracted landslide inventory data were employed in the logistic regression method and the produced landslide susceptibility map of the study area is presented here.
Highlights
IntroductionDue to the rapid growth of population and inadequate land use planning, harmful effects of natural disasters are increasing in rural and urban areas of developing countries
Natural disasters are events that cause loss of lives and properties
The main aim of this study is to investigate the usability of Sentinel-2 images for producing timely accurate landslide susceptibility map for a part of Mamak District in Ankara, Turkey together with high resolution digital terrain model (DTM) and lithology data obtained from national geodatabases
Summary
Due to the rapid growth of population and inadequate land use planning, harmful effects of natural disasters are increasing in rural and urban areas of developing countries. A combined approach for land use planning that take infrastructure, human effect, and natural hazard potential is needed and recent developments in geoformation tools and technologies for data collection and analysis can provide the required means for this purpose. Disasters caused by landslides damage buildings, infrastructure and other public facilities in the settlement areas. The determination of landslide prone areas plays an important role in urban planning and disaster mitigation actions organized by local governments. Thematic maps on landslide susceptibility, hazard and disaster risks can demonstrate their spatial characteristics and the potential environmental and societal effects
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