GEOCHAP17

GEOCHAP17 - GEO-Chapter 17 1. Fluvial processes o Surface...

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GEO-Chapter 17 1. Fluvial processes o Surface water and runoff: liquid water flow over the earth due to precipitation Factors: intensity, soil type, evaporation, and infiltration o Infiltration capacity: amount of water going in the ground Interception: slow down of water flow Sheet wash rills gullies Ephemeral flow: empty channels of water Perennial flow: all year flow o Make trunk streams (largest) Intermittent flow: some months have water Base flow: helps stream flow generate 2. Stream systems o Drainage basin: expanse of land due to runoff o Drainage density: depends on runoff and erodibility o Drainage pattern: bedrock structure and surface topography Ex. Dendritic, trellis, radial o Stream discharge: how much flow is being conveyed o Stream energy: use kinetic energy to move clast Stream gradient: how steep Competence: amount stream can support Capacity: amount stream is moving 3. Fluvial processes o Stream erosion: removal of rock by water flow
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This note was uploaded on 01/13/2012 for the course GEOG 101 taught by Professor Thebpanya during the Fall '07 term at Towson.

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GEOCHAP17 - GEO-Chapter 17 1. Fluvial processes o Surface...

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