کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5781075 1635369 2017 48 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linking rainfall-induced landslides with debris flows runout patterns towards catchment scale hazard assessment
ترجمه فارسی عنوان
ارتباط رانش های ناشی از بارندگی با الگوهای رفتاری جریان های باقی مانده به منظور ارزیابی خطر در سطح آبشاری
کلمات کلیدی
زلزله زدگی، جریان آوار، فاصله رانندگی، ارزیابی خطر،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Debris flows and landslides induced by heavy rainfall represent an ubiquitous and destructive natural hazard in steep mountainous regions. For debris flows initiated by shallow landslides, the prediction of the resulting pathways and associated hazard is often hindered by uncertainty in determining initiation locations, volumes and mechanical state of the mobilized debris (and by model parameterization). We propose a framework for linking a simplified physically-based debris flow runout model with a novel Landslide Hydro-mechanical Triggering (LHT) model to obtain a coupled landslide-debris flow susceptibility and hazard assessment. We first compared the simplified debris flow model of Perla (1980) with a state-of-the art continuum-based model (RAMMS) and with an empirical model of Rickenmann (1999) at the catchment scale. The results indicate that predicted runout distances by the Perla model are in reasonable agreement with inventory measurements and with the other models. Predictions of localized shallow landslides by LHT model provides information on water content of released mass. To incorporate effects of water content and flow viscosity as provided by LHT on debris flow runout, we adapted the Perla model. The proposed integral link between landslide triggering susceptibility quantified by LHT and subsequent debris flow runout hazard calculation using the adapted Perla model provides a spatially and temporally resolved framework for real-time hazard assessment at the catchment scale or along critical infrastructure (roads, railroad lines).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 280, 1 March 2017, Pages 1-15
نویسندگان
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