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

A study of the downstream changes in the Curly Burn River

Extracts from this document...

Introduction

A study of the downstream changes in the Curly Burn River Aims: The aim for this field work is to investigate the downstream changes in the Curly Burn River in Limavady. Several hypotheses I decided to investigate included the increase of both channel width and depth with increasing distance downstream, the increase in velocity and discharge with increasing distance downstream, the decrease in slope downstream and the decrease in the calibre of bedload particles with increasing distance downstream. Planning: The Curly Burn River was chosen for us to investigate due to the various aspects it had relevant to our AS study of fluvial environments. The primary data I collected in the field included measurements such as the width and depth of the river as well as the float velocity, discharge, slope and bedload shape and calibre. ...read more.

Middle

The leader of our group was a qualified expert, who at all times carried both a mobile phone and first aid kit with him in case of an emergency. The paths leading to the site locations on the river were uneven and many overhanging branches were present. The riverbed was very slippery and unstable due to the rocky nature and variable depths. The presence of strong river currents and Japanese giant hogweed also acted as incentives to stand in safe areas around the river when collecting and recording data. We were also equipped with hazardous apparatus, which we were taught how to use properly to avoid incident. We were warned to stay away from rats, make sure we washed our hands after being out in the field and to cover cuts with plasters to protect against Weils Disease. ...read more.

Conclusion

The equipment used to collect data on the river's discharge included a meter stick, measuring tape and flow meter. The river's channel width was measured using the measuring tape; this measurement was then divided into three equal sections. For each section, the depth of the river was measured with a meter stick and the velocity was measured using a flow meter. With the collection of this data the discharge could then be calculated. The equipment used to measure bedload particles included a stone ruler in which a stone would be placed along and measured to the nearest millimetre. Also used was a laminated version of Power's roundness index which assisted us in determining the characteristics of the particles retrieved and hence giving us the approximate Power's index value. To ensure an unbiased sample was used in the collection of bedload particles a random sampling method was carried out in the retrieval of ten stones at each site location. ...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)

    and, as water vapour, it is transferred by winds. When there is sufficient moisture in the air and it is cooled, the water vapour condenses, forming clouds and precipitation (rain, snow, sleet, etc). As the precipitation reaches the ground some will soak into the soil and flow through to the river (throughflow), some will percolate through to the rock

  2. Study the downstream changes of Loughton Brook.

    When two streams of the same stream order join the stream order will increase to two. Stream ordering shows us the different stages of the streams development. Fig. shows the stream ordering of Loughton Brook's drainage basin. Long Profile A river's cross profile comprises of three stages the upper, middle and lower stages.

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

    This means that the erosion doesn't concentrate on the rivers bed but erodes the rivers banks more creating a wider but shallower cross section. If this is true then it may be because the gradient has decreased. (See gradient graph)

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

    Dis from S by Gradient Graph The graph above shows the Gradient by Distance from source. As you can see from this line of best fit the Gradient decreases as we move downstream. It has a fairly strong negative correlation.

  1. Geography investigation - The River Skirfare located in the Littondale region in the Yorkshire ...

    Hence these can be taken away from this figure Right side of the bank that was not submerged; (5cm x 125cm) 625cm Left side of the bank that was not submerged; (4cm x 125cm) 500cm Total; 1025cm Wetted Perimeter; Total riverbank and bed length - Riverbank not submerged 3250cm - 1025cm= 2495cm Arncliffe Total line graph length= 58cm.

  2. How Do River Characteristics Vary Downstream?

    there is virtually no correlation between the two variables and a high likelihood that the coefficient has occurred by chance. On this basis, hypothesis one cannot be accepted. i.e. discharge does not increase further downstream. This is going against well-established geographical theory that discharge does increase further downstream due to the following reasons.

  1. Investigating the river Caerfanell

    This is because site 3 is near the mouth and therefore has the largest drainage basin and as a result receives the largest discharge of water. The meander as previously mentioned is caused by helicoidally flow. The Manning's `n' rating is lowest at 0.025 which represents a uniform bed profile.

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

    The force of the river erodes the soil on the sides and the tree roots could be seen. The velocity of the river increases because many small tributaries join the river and that causes the discharge of the river to increase.

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