Evaluation of a GIS-Based Floodplain Height Difference Model for Flood Inundation Mapping, Case Study: Rudbar, Iran
محل انتشار: فصلنامه روشهای تصفیه محیط، دوره: 5، شماره: 3
سال انتشار: 1396
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 559
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شناسه ملی سند علمی:
JR_JETT-5-3_003
تاریخ نمایه سازی: 20 آبان 1397
چکیده مقاله:
Most of the human societies are experiencing increasing losses of flood hazard each year. Flood inundation mapping is useful for flood mitigation and risk reduction. To detect flood inundation areas, a novel GIS-based model has been developed in the present work. This model makes it possible to calculate the height difference of floodplain surfaces from riverbed by the use of terrain data and hydrometric statistics. The output of the model disregards the mountain topography and represents the local terrain of the floodplain. The output along with the peak discharge by Creager model has been applied for the inundation mapping. The estimated values of the model and observed values have a RMSE of 2.58. The results showed a significant difference, at 95% confidence interval, between the flooded and non-flooded villages in the height differences. It can be concluded that the rural settlements lower in height are more at risk of flooding.
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نویسندگان
Mohammad Ali Nezammahalleh
Physical Geography Department, Faculty of Geography, University of Tehran, P.O.Box: ۱۴۱۷۸۵۳۹۳۳, Enqlab Ave., Tehran, Iran
Mojtaba Yamani
Physical Geography Department, Faculty of Geography, University of Tehran, P.O.Box: ۱۴۱۷۸۵۳۹۳۳, Enqlab Ave., Tehran, Iran
Abolghassem Goorabi
Physical Geography Department, Faculty of Geography, University of Tehran, P.O.Box: ۱۴۱۷۸۵۳۹۳۳, Enqlab Ave., Tehran, Iran
Mehran Maghsoudi
Physical Geography Department, Faculty of Geography, University of Tehran, P.O.Box: ۱۴۱۷۸۵۳۹۳۳, Enqlab Ave., Tehran, Iran