کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4687096 1635567 2008 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Using dynamic modelling to simulate the distribution of rockglaciers
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Using dynamic modelling to simulate the distribution of rockglaciers
چکیده انگلیسی

Rockglaciers — permafrost creep features on mountain slopes — are common landforms in high mountain areas. The present contribution reports about the exploration of a dynamic modelling approach using cellular automata to assess their regional distribution patterns. The designed prototype model allows the numerical simulation of the spatial and temporal occurrence of talus-derived rockglaciers in the Upper Engadine (eastern Swiss Alps) during the Holocene. The dynamic model considers processes in the spatial and temporal domain and accounts for both external and internal processes, implemented by means of six modules (A to G). The external processes are: (A) rock-debris accumulation, (B) hydrology, (C) climate, (D) glacier extent. The internal processes are: (E) creep initiation, (F) advance rate, (G) creep termination. Comparison between field evidence and modelling results shows that the dynamic model enables the simulation of spatio-temporal creep processes on a regional scale, but that the model is highly dependent on the accurate modelling of the relevant (input) parameters. These deficiencies have been recognized and analyzed, and it is planned that future research activities will address these issues.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 93, Issues 1–2, 1 January 2008, Pages 130–143
نویسندگان
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