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دانلود رایکان مقاله انگلیسی ISI با موضوع روش جایگذاری شبکه ای مبتنی بر GIS در برابر رویکرد مدلسازی

عنوان فارسی مقاله:

روش جایگذاری شبکه ای مبتنی بر GIS در برابر رویکرد مدلسازی – یک مطالعه قیاسی برای ناحیه بندی خطر زمین لغزه (LHZ) در منطقه متا رابی ناحیه شوآی غربی اتیوپی

عنوان انگلیسی مقاله:

GIS based Grid overlay method versus modeling approach – A comparative study for landslide hazard zonation (LHZ) in Meta Robi District of West Showa Zone in Ethiopia

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بخشی از مقاله انگلیسی :

4. Landslide inventory

The Landslide hazard estimation must begin with a clear understanding on what has happened in the past in the area. This is to know what type of landslides have occurred and with what mechanism these were triggered. There needs to be a clear understanding on the possible causative and triggering factors that might have possibly resulted into landslides. The condition that has led to the past landslides in an area provides useful information for possible locations for future landslides (Lan et al., 2004; Dai et al., 2002).
During the field investigation a thorough inventory was made for the past landslide activities. As a part of this, inventory data pertaining to the location, dimension, type of failure, material involved in the landslides were collected. The field investigations pertaining to landslide inventory data collection were post landslide activities. All existing landslides in the study area were identified through traverse mapping and necessary observations were made during the field investigations. As such no systematic historical records on these landslides are maintained by the local administration. However, through predefined questionnaires local respondents were interviewed for the landslide occurrence period, possible triggering factors and any instability manifestations prior to such events; such as tension cracks, distress in slope mass etc.