GEOG 3000 Study Guide - Final Guide: Dune, Salmonidae, Froude Number

• School: University of Guelph
• Department: Geography
• Course: GEOG 3000
• Professor: Paul Villard

Document Summary

Final exam textbook questions: explain how imbricated pebble clusters form. Form when particles in the course of transport are stopped by larger grains protruding from the bed, which creates an accumulation of bed material on the stoss-side of the obstacles. Smaller, finer sediments get trapped in the obstacle"s downstream separation zone and are exposed to much less flow: suspended sediment concentration in rivers may peak before or after the peak in discharge during a single storm. After: when upstream sediment sources continue to supply a significant portion of the load, even after the passage of the peak in the flood wave. Starting from a relatively flat surface made of fairly uniform sand, the bed will quickly develop into a series of relatively small-scale features described as ripples. As flow intensity further increases, larger dune features will develop which create undulations on the water surface, with the bed undulations (dunes) and water surface undulations usually being out of phase.