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

Geography Field Trip to a River

Extracts from this document...

Introduction

Geography Field Trip to a River The aim of the field trip was to study the changing characteristics of a river as it travels downstream, and to obtain "primary data" to answer hypothesis questions (see page ). We collected primary data by visiting Lower Debden Brook, Upper Debden Brook Upper and the River Roding, which form the River Roding drainage basin. Measurements were taken and carefully recorded at each study site. To investigate the aim, it was broken down into eight hypothesis that were tested (see page) The trip to Epping Forest was worthwhile because I gained geographical knowledge on the topic of "Rivers" and discovered why river characteristics change as you travel downstream. ...read more.

Middle

For example the wetted perimeter (see page ) is the amount of riverbed that is submerged by water. This measurement depends on the width of the channel and this changes due to vertical and lateral erosion. Another example is stream velocity (see page ) Water flows faster through smaller spaces, therefore, because vertical erosion narrows the channel and lateral erosion widens the channel the water flows at different speeds. Although the field trip was fairly successful there were many limitations. These included: * the study sites were all within the same drainage basin * the different sites were only visited once, on one day, and in one season * the equipment used to take the measurements was very basic and did not enable us to gain precise results. ...read more.

Conclusion

Under normal investigation conditions the odd result would be discarded but because we were restricted to the amount of time we could spend at each site we were unable to repeat the experiment and the inaccurate result used to calculate an average time. To improve the work further I would repeat the measurements taken using the following changes: * Allow more time to undertake the investigation * Visit more than one drainage basin * Because river characteristics change at different times of the year, the sites would need to be visited during different weather conditions. * Use more modern equipment * The methods used at each site would ideally be repeated at least 50 times and if possible 100 times in order to gain the most accurate results. * * * * ...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. Study the downstream changes of Loughton Brook.

    A cork, timekeeping device and 1m ruler are required. Gradient The gradient is important because it tells how much vertical corrasion has taken place. Therefore the gradient shows us how the land slopes (usually steep during higher stages and gentle during lower stages).

  2. 'To what extent does the River Lyn conform to the Bradshaw model of River ...

    I only had one anomalous result in all of my readings; this was the velocity reading for the third site. It is higher than it should be. If the anomalous result wasn't plotted on the graph, then there would be a good positive correlation, with all points nearly on the line of best fit.

  1. I am going to study the characteristics of rivers and how they change as ...

    Therefore, due to abrasion, lateral erosion or hydraulic action the right side of the bank has eroded. The river tends to be slightly deeper on the right side (32cm) and shallower on the left side (21cm). Since there is more depth and high riverbanks, the channel width is also big.

  2. Geography Coursework: Epping Forest

    at the source after rainfall because Loughton Brook is a flashy river so the water seeps quickly into the river channel and flows away downstream. During the months of April - September, when there is less rain, there is hardly any water in this part of the river unless it rains.

  1. River channel processes.

    This allows a lot more plants to survive. Here the climax species are shrubs and trees. Psammosere - the vegetation succession that occurs mostly on sand dunes. They are hostile environments with strong winds blowing slat around, sea spray so sand is quite saline.

  2. How does Loughton Brook change as it moves downstream?

    To measure the bank full and low flow measurements we use a 3 meter tape measurer which I used to measure the real width and depth. This as a result of no rain for the previous week was unusually low so we to 'bank full5 measurements.

  1. An investigation into changes in channel parameters down the river Horner

    You find the hydraulic radius by dividing the CSA by the wetted perimeter. The bigger the hydraulic radius the more efficient the river is. If the CSA of the two streams is equal then which is more efficient? The one that has the bigger efficiency is the one with more water touching on a smaller area (wetted perimeter).

  2. Edexcel Geography B Unit 3 Coursework

    At each spot, we time how long it takes for the blades to reach the end of the rod. The timings are all added together and then divided by three to find an average velocity. The impeller is a small object with a tri-fin blade screwed onto a bolt (therefore acting as a nut).

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