نتایج جستجو برای: landslide zonation

تعداد نتایج: 8421  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده جغرافیا 1392

رانش زمین نقش مهمی در تکامل لندفرم ها داشته و نشان دهنده یک خطر جدی در بسیاری از مناطق کوهستانی ایران است. فن آوری های سنجش از دور ابزاری ارزشمند برای شناسایی، پایش و تهیه نقشه ثبت زمین لغزش ها و متعاقباً شالوده اساسی برای ارزیابی خطر و ریسک زمین لغزش می باشند. دید همه جانبه تصاویر سنجش از دوری رادار آن را به ابزاری قدرتمند برای تهیه نقشه های پراکنش و ارزیابی خطر و ریسک زمین لغزش ها در فواصل زما...

One of the goals of geomorphologists in working with the models of different landforms is to obtain better relations in realizing the physical realities of environment. In this study, to evaluate the performance of geomorphometric parameters to increase accuracy of zoning landslide susceptibility map has been studied. As the first step by the application of nine initial conditioning factors inc...

2002
G. Iovine S. Di Gregorio V. Lupiano

On 15–16 December 1999, heavy rainfall severely stroke Campania region (southern Italy), triggering numerous debris flows on the slopes of the San Martino Valle Caudina-Cervinara area. Soil slips originated within the weathered volcaniclastic mantle of soil cover overlying the carbonate skeleton of the massif. Debris slides turned into fast flowing mixtures of matrix and large blocks, downslope...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2018

Journal: :Natural Hazards 2021

This study deals with landslide susceptibility mapping in the northern part of Lecco Province, Lombardy Region, Italy. In so doing, a valid inventory map and thirteen predisposing factors (including elevation, slope aspect, degree, plan curvature, profile distance to waterway, road, fault, soil type, land use, lithology, stream power index, topographic wetness index) form spatial database withi...

2013
B. M. Pradhan

landslide also referred to as mass movement, slope failures, slope instability, and terrain instability is the mass movement, usually sudden, of soil and debris down a steep slope (Cruden, 1991). They are caused by a variety of factors such as heavy rains, earthquake ground shaking or geological forces. Different types of landslides move down slope at a wide range of speeds (Varnes, 1978). Most...

Journal: :Geoscientific Model Development 2022

Abstract. In the past 50 years, a large variety of statistically based models and methods for landslide susceptibility mapping zonation have been proposed in literature. The methods, which are applicable to range spatial scales, use input thematic data, different model combinations, several approaches evaluate models' performance. Despite numerous applications available literature, standard app...

The Landslide is one of the natural hazards that causes a lot of mortal and financial losses in high-altitude and seismic mountainous areas annually. Considering the importance of roads as a pillar of sustainable forest management in this study, we have tried to estimate the sensitivity of landslide occurrence in 8 forestry series with using frequency ratio approach. Initially, the slip positio...

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