کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5780746 1635355 2017 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A single width-discharge regime relationship for individual threads of braided and meandering rivers from the Himalayan Foreland
ترجمه فارسی عنوان
یک رابطه رژیم رژیم یک ردیف برای رشته های فردی از رودخانه های بافته شده و پر از رودخانه های هیمالیا
کلمات کلیدی
دشت گانگا، رابطه رژیم، قانون لایسی، تئوری آستانه،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
We explore the existence of a single width-discharge regime relation for alluvial rivers of braided and meandering patterns. The study relies on the field measurement of a channel's cross section geometry (width, depth), discharge, and grain size of 98 individual threads of braided and meandering rivers from the Ganga-Brahmaputra plains of the Himalayan Foreland. Using this data set, we show that, irrespective of the diverse climatic and geologic setting along the strike, the braided and meandering threads share statistically indistinguishable regime relations and scale according to Lacey's law. To explain the observed trend in this empirical relationship, we use the threshold theory introduced by Glover and Florey (1951). Using this theory we detrend our data with respect to discharge to produce a statistically homogeneous ensemble of width measurements. The statistical distribution of the detrended width is similar for braided and meandering threads of the entire plains of the Foreland. This suggests that when we decompose a braided river into individual threads, each of these resemble single-thread meandering rivers. Based on this study, we conclude that the individual threads of braided and meandering rivers of the Himalayan Foreland are geometrically comparable and share a common width-discharge regime relation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 295, 15 October 2017, Pages 126-133
نویسندگان
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