EARTH121 Lecture Notes - Lecture 15: Suspended Load, Alluvium, Alluvial Fan
25 Aug 2016
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Document Summary
Moving water creates bedrock and alters its surface: moves sediment and transports it. Streamflow begins as water is added to the surface: snow, rain snow melts, temperature influences river flow rate, distributed across the land by living things, diverting streams. Q = wdv: water velocity (v) Influences size of channel (carves into land if flowing fast and widens it) wider channel = greater velocity: sediment load. High flow = large sediments (high load) Dissolved load, suspended load (skips, hits the bed and rebounds and continues that), bed load (bottom) Indicators: turbulence = larger sediment present, cloudy water (grains transported) Characterization of sediments: erode transport deposit, solution (dissolved load, suspension (suspended load, saltation (bed load, traction (bed load, alluvium ,alluvial fan and delta areas of major deposition. Delta ( running water hits suspended water) Velocity is slowed down causing sediment to drop. Fan ( running water spilling out onto a valley)
