JEG100H1 Chapter Notes - Chapter 16: Cirque Glacier, Glacier Morphology, U-Shaped Valley
27 Nov 2016
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Document Summary
Remove products of weathering, mass movement, erosion by transporting downstream. Discharge is streamflow volume past a point in a period of time. Conversion from gravitational potential energy to kinetic energy. Discharge = channel width * channel depth * stream velocity. River is trunk/main stream of a network of tributaries forming a river system. Drainage basin: portion of landscape from which streams receive water. Sediment and runoff eventually concentrated in main stream. Rills: small-scale grooves in landscape from downslope movement of water. Interfluve is high ground that separates one valley from another, disrupts sheetflow. Continental divide: separate drainage basin that empty into different bodies of water surrounding a continent. Drainage density: total length of all stream channels divided by area of basin. Regional steepness, relief, rock resistance, climate, hydrology, structural controls of underlying rocks. Folded rock structure with varied resistance to erosion. Structural dome with concentric pattern of rock strata. Perennial: flows yearlong ephemeral: flows only after precipitation.
