• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

River Landscapes and Processes

Extracts from this document...

Introduction

River Landscapes and Processes Some important words and definitions: 1. Fluvial Landscape - a landscape created by rivers and their tributaries. 2. Tributary - a small river or stream which joins to a larger one. 3. River or drainage basin - an area drained by a single river together with all of its tributaries. 4. Confluence - where 2 or more streams, rivers or tributaries join together. 5. Watershed - The boundary line between different river/drainage basins. (Sometimes these are referred to as Catchment areas) 6. Source - The starting point of a river or stream. (watercourse) - This maybe a spring or just an area of boggy/marshy land. ...read more.

Middle

There are 4 main processes by which a river can cause erosion (wearing away) and 4 processes by which a river can transport (move) material. * Processes of erosion 1. Attrition - breaking up of material into smaller and smaller particles. 2. Corrosion - fire material rubs (like sandpaper) and gradually wears away the channel sides. 3. Corrosion - dilute acids in water help break down and dissolve particles. 4. Hydraulic Action - the sheer force of flowing water "hitting" the banks causes them to be worn away and collapse. * Processes of transportation 1. Traction - the movement of large rocks and boulders along the channel - usually in times of flood. ...read more.

Conclusion

This is more usual in mountainous areas nearer to the source of the river. Here the river forms a series of characteristic landforms which include "V" - shaped valley with interlocking spurs as well as waterfalls and rapids. The Formation of a Cap Rock Waterfall How do meanders and oxbow lakes form? As rivers get nearer to their mouths they flow in increasingly wide gentle sided valleys (with a saucer shape cross-section.) The channel increases in width and depth and the natural physical process causes it to 2meander" (from the River Meander in N. America). As a river goes round a bend most of the water is pushed to the outside of the bend and erosion takes place. The opposite happens on the inside of the bend - where deposition takes place Cross Section of a river bend Diagrams showing the formation of meanders and ox-bow lakes ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Hydrology & Fluvial Geomorphology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Hydrology & Fluvial Geomorphology essays

  1. Hydrology and Fluvial geomorphology. (Q&A)

    Urbanisation, or the building of towns and cities, will affect the hydrological cycle as water cannot sink into concrete and other impermeable surfaces. Water is transferred, via drains, often directly into a nearby river, so decreasing the amount of time taken for the water to reach the river.

  2. The Afon Glaslyn, SnowdoniaCase Study of fluvial landforms and processes

    Middle Reaches 9-11km * Processes + Landforms same as 4-6.5km 11-14km * Processes In this section erosion and deposition are the most common processes because the river is either nearly at its equilibrium or just below it. * Landforms In this secrion meanders, floodplains and braiding are the landforms.

  1. The river Gwaun: Investigating how the course of the river changes from the source ...

    Results Site Number Discharge (m�) Site 1 138947.6 Site 2 249554 Site 3 265345.1 Site 4 526302.2 Graph Description The discharge increases from Site 1 to Site 4. This is because of all the forms of erosion that are actively involved in the increase of width/depth/speed of flow the further down the river you go (primarily corrasion and hydraulic power)

  2. River channel processes.

    The difference in colour of the beds is caused by the small amounts of minerals in the rocks. MEANDERS - these are the sweeping curves found in the river's natural course. They are mainly formed by the sweeping nature of the thalweg in the river.

  1. Geograpgy glendun river

    Meander- bends in a river Mouth- where river enters the sea or a lake Ox Bow Lake - semi circular lake formed by a meander being sealed off from the main course of the river Source- the beginning or start of a river Transport- the carrying of materials in the

  2. River cross sections

    Light so may be blown around by the wind. Results: In the following pages there is a collection of charts depicting results obtained from sampling at Avon Water and Mill Lawn Brook. Included are calibration charts to convert Counts-Per-Minute into Flow Velocity in Cm per Second, cross sections and flow graphs.

  1. Water on the Land - Channel processes and landforms.

    The river doesn't follow a straight path, beginning to swing from side to side, and it is this form of sideways erosion that causes meanders to occur. When the river emerges from its upland area, its starts to meander in order to use up surplus energy, and it's the erosion

  2. "Glaciated Uplands are landscapes of erosion: glaciated lowlands are landscapes of deposition" examine the ...

    Continued accumulation will lead to the formation of a corrie glacier. The rotational slip as the ice leaves the corrie causes plucking and abrasion which erodes the hollow to create steep side walls surrounding an armchair shaped depression. Another example of an upland erosional feature is a hanging valley, like Glen Eason in North Arran.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work