کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9521566 | 1347795 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An alternative form for the statistical distribution of extreme avalanche runout distances
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An alternative form for the statistical distribution of extreme avalanche runout distances An alternative form for the statistical distribution of extreme avalanche runout distances](/preview/png/9521566.png)
چکیده انگلیسی
There are two main approaches in the avalanche literature for the statistical characterisation of extreme avalanche runout and these are known as the alpha-beta and runout ratio methods. Recent work suggests that the latter method is a more robust approach. This paper examines the statistical reasoning behind the selection of the Extreme Value Type I or Gumbel distribution used to characterise the runout distribution in the runout ratio method. On the basis that a threshold is often applied to the distribution of extreme avalanches used in analysis, it is proposed that the Generalised Pareto Distribution is an appropriate candidate distribution based on theoretical arguments. Such a proposal is tested against data on extreme avalanches in Iceland for both the largest events on specific paths and for all events exceeding a threshold. The latter is a peaks-over-threshold approach that potentially allows more robust distribution estimation due to the increase in data availability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cold Regions Science and Technology - Volume 42, Issue 3, November 2005, Pages 185-193
Journal: Cold Regions Science and Technology - Volume 42, Issue 3, November 2005, Pages 185-193
نویسندگان
C.J. Keylock,