GEOL 1001 : Test 4 Study Guide
Document Summary
Drainage basin- the total area drained by a stream and its tributaries. Part all of one single basin, the limit between basins is normally a continental divide. The elevation is very high in between, such as mountains, etc. , that separates them. River has the biggest drainage basin in the u. s. Fluvial transport: different rain sizes in transport, the heavier grains will move along the channel, very close to the streambed as a bed load (water can"t lift the grains). Suspended loads transport such things as sand, the finer and lighter sediments. Stream erosion- controlled by how fast water flows and how much is flowing down that channel. Discharge: volume of water passing a particular point in a stream over time. Stream velocity: controlled by stream gradient (slope, channel shape, and channel roughness. Maximum velocity near center of channel: outside part of curve, current is faster. Stream erosion- stream gradient is the downhill slope of the stream bed; usually decreases downstream.
