GSC 103 Study Guide - Final Guide: Ekman Transport, John Tuzo Wilson, Magnetic Dip
2 May 2016
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Document Summary
Runoff=the amount of rainfall that flows over the land, rather than sinking into the soil or evaporating. Overland flow=sheets of water with no channel (channel=the passageway); type of runoff. Streamflow=streams of water in channels; type of runoff. Advantages of living near streams=valley floors are flat and east to build on, soil tends to be deep and fertile, and water is available. Disadvantages of living near streams=threatened by floods, as cities grow human and industrial wastes pollute the water. Meandering=form in areas of low relief (gentle gradients) and fine-grained sediments; oxbow lake forms when two curves moving towards each other meet, they cut off the meander. Braided channels=channels repeatedly splitting and rejoining; formed by periodically variable streams in areas of easily erodible material; sites of erosion and deposition change; exhibited by glacial rivers; produced by floods. Floodplains=where sediment is carried when a river floods; as the floodwaters recede, they deposit that material.
