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

Desert Landforms

Extracts from this document...

Introduction

INTRODUCTION: We were taken to an area of the desert approximately 20 kilometers inland from Jeddah. On arrival, we were asked to carry out practical investigations of the landforms and landscape in the immediate area, in order to find evidence of river processes and resulting landform such as erosion, transportation, weathering and depostion . these investigations took place in a valley ("wadi"), which is an intermittent watercourse, during the dry season. To carry out our measurements, we devised the following equipment before hand: * A clinometer, to measure the gradient along the "wadi" and its cross profile (long profile). * A stone board, in order to measure the size of rocks * A chart to classify the chosen rocks * A quadrate to help choose rocks randomly Before leaving to the "Wadi", we prepared a list of hypotheses. ...read more.

Middle

interlocking spurs can be seen 13. there is evidence of deposition in the lower course and near the meander. 14. there is the most evidence of erosion on the stones in the lower course 15. there are sign of vegetation along the course of the river 16. the angle of the cross section will be smallest in the upper course and greatest in the lower course. 17. the load in the lower course will be small and rounded. 18. corrasion will occur more in the lower course. 19. hydraulic action will ovvur more in the upper course 20. A slip-off is seen at the meander. METHODS AND TECHNIQUES: It is very essential to be as accurate and as detailed as possible when collecting data and information. This can be done by preparing simple tables and charts earlier on, to air in the recording of the results. ...read more.

Conclusion

Seleting the stones: A quadrat was thrown randomly. The stones were chosen at randon from inside its "windows". Classifying the shape of the stones: The rock was handed over to a specific person, who moted down the calls of the stone by comparing it with a chart for assessing their shape. Measuring the size of the stones: The chosen stone was placed vertically on the stone board. Its long axis was measured and noted down. Measuring the gradients alond the "wadi" This is also known as the long profile. One person stood in a specific place. Another person stood ten metres away, facing the first person. The clinometer was held horizontally and an immediate reading of the angle of the slope was taken. Measuring the cross profile of the "wasi" Two people stood ten metres away from each other, this time, across the "Wadi". Again, the clinometer was used to measure the angle of slope. A second reading was taken, on the opposite side of the "Wadi". ...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)

    deposition occurs at the side of the channel and effectively blocks off the loop, leaving an ox-bow lake. This may retain water, particularly after a storm but it may also be dry after a period of time . For diagrams to show the formation of meanders look at the ROSS text book or any book.

  2. To what extent are fluvio-glacial deposits and landforms distinctive?

    glacier above the Great Langdale Valley, and sits over 120 metres above the main valley floor and is an excellent example of a truncated spur and hanging valley.

  1. Fluvioglacial Landforms

    gain enough energy to transport large pieces of debris over long distances. As the discharge of the river decreases so does its ability to carry its' load and so deposition begins to occur allowing numerous landforms to be shaped. Outwash (or Sandur)

  2. River cross sections

    Leaf - Advantage Disadvantage Bio-degradable. Could get mixed up with other leaves Hard to see as it is brown. Could get blown around on the surface. Ping-Pong Ball - Advantage Disadvantage Brightly Coloured. Floats well. Non bio-degradable. Light so may be blown around by the wind.

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

    In the upper course of the river, vertical erosion takes place due to the steep gradient and so the water cuts in a downward direction. As the river is keen to reach sea level as quickly as possible, it uses its energy on eroding vertically and so the river channel itself is quite shallow as well as being narrow.

  2. Do the Characteristics of a river change downstream?

    to work out an average which would provide us with accurate results. Diagram 3a Logic There were multiple reasons for deciding to make the race line twenty metres long. Firstly we felt that this distance was the optimal length to use which would provide good results and also not take too long to complete.

  1. Using Case Studies And Examples, Describe And Explain The Landforms Found In The Glacial ...

    In some cases, abrasion can polish the surface of some rock types smooth. This geomorphic feature is known as glacial polish. The abrasion also produces a fine clay-sized sediment that is often transported away from the glacier by meltwater. As a result of this process, glacial meltwater can have a light, cloudy appearance, and is called glacial milk.

  2. The changing landforms down a river's long profile

    * Discharge - this will increase as you go downstream as will the velocity because more water is being added to the channel. * Erosion - will increase with the discharge. Is more vertical upstream and lateral downstream. * Transportation - the rivers capacity goes up downstream.

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