Landslides are among the great destructive factors which cause lots of fatalities and financial losses all over the world every year. The aim of the research was landslide susceptibility mapping by remote sensing data processing and GIS spatial analysis. The area study in research is
central Zab basin in west Azerbaijan province, Iran. In this research, through geological maps and field studies, we primarily prepared a map for landslide distributions in Zab basin. Then, applying other information sources such as the existing thematic maps, we studied and defined the 8 factors such as, lithology, slope, slope aspect, annual rainfall, land use, distance to waterway, distance to the fault , and distance to road. That affect occurrence of the landslides. To get more precision, speed and facility in our analysis all descriptive and spatial information was entered into GIS system. After preparation of the…
The aims of this project were to identify and map landslide occurences in the Bréifne area in norwth-west Ireland; to proue a landslide susceptibility map using GIS; and to test a first approach for a methodology for systematic landslide mapping for the whole of Ireland. The methodology used to derive the final susceibility maps was compiled from several literature examples (Santacana et a l. 2003, Tangestani 2003, Morton et al. 2003). Due to the large extent of the study area (2129.7 km2) and the short length of time available for fieldwork (les than one month), mapping was mainly based on remote sensing techniques such as satellite imagery, aerial photography and orthophotograhy analysis. All these datasets were combined with igital elevation models (DEMs) to facilitate identifiation and classification of landslide events.
read moreKyrgyzstan is landlocked mountainous nation of around five million people, which borders China, Kazakhstan, Tajikistan and Uzbekistan. The total area of high mountainous terrain, alpine meadows and pastures exceeds 70% of the Republic’s territory, whereas the greater part of the Kyrgyz Republic is occupied by the Tien-Shan mountains. Kyrgyzstan is a highly active seismic region and has been shaken by numerous significant earthquakes as a consequence of the ongoing collision between the Indian and Eurasian tectonic plates. In the result, the mountainous country is faced with a large variety of natural hazards (mainly earthquakes, large landslides and floods) which frequently lead to the occurrence of natural disaster (e.g., 1994: about 1,000 landslides failed and 115 human fatalities; 2008: Nura earthquake M=6.6, 74 human fatalities and 150 injured, 90 glacial lakes endangered for regularly occurring outburst floods). Under these conditions, there is high demand for efficient…
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