Fluvial Processes and Landforms

Fluvial Processes and Landforms -...

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Fluvial Processes and Landforms  OVERVIEW   This chapter focuses on running water as a land-forming agent. It examines the  processes by which running water moves sediments and shapes landforms at the  earth's surface. Landforms produced by running water dominate most of the earth's  terrestrial environments. Water is one of the four active agents of  denudation  (the others being wind,  waves and glacial ice) that erode, transport and deposit sediments at the earth's  surface to produce  erosional  and  depositional  landforms.  The term  fluvial  is applied to the processes and landforms associated with the  action of running water.  Fluvial processes can erode and transport soil particles from slopes and uplands  causing  soil erosion Rates of soil erosion and soil formation are in equilibrium on the slopes of most  natural landscapes. This is known as the  geologic norm . Disturbance of this  equilibrium by human activity or natural catastrophes can lead to  accelerated  erosion Some eroded soil particles are deposited immediately at the base of slopes to  form  colluvium , while others enter streams and are carried downstream before  being deposited as  alluvium  along valley floors.  A stream can erode material from its bed and banks. Soft materials can be  effectively eroded by  hydraulic action , while hard bedrock materials can only be 
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This note was uploaded on 11/10/2011 for the course GEA GEA2000 taught by Professor Wong,faith during the Fall '09 term at Broward College.

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Fluvial Processes and Landforms -...

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