کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1721670 1014533 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Note on sediment sorting in a sandy bed under standing water waves
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
پیش نمایش صفحه اول مقاله
Note on sediment sorting in a sandy bed under standing water waves
چکیده انگلیسی

We present new quantitative data on the sorting of sediments on a sandy seabed under standing waves. Starting from a flat bed composed of a homogeneous mixture of a coarse and a fine sand with mean diameters 0.11 and 0.21 mm, we observed simultaneous ripple and sand bar formation and sand sorting on the seabed. Over days of wave action, sand bars formed with crests beneath the surface wave nodes and flat plateaus flanked by mounds beneath the antinodes. Bar crests were composed of sand coarser on average than 0.21 mm, while the flat plateaus were covered by sand finer on average than 0.11 mm. Comparison with two experiments involving sand beds of more homogeneous size distributions shows that the mounds are characteristic of the motion of fine suspensions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Coastal Engineering - Volume 54, Issue 9, September 2007, Pages 694–699
نویسندگان
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