| River Study - theory and fieldwork techniques | ||
| | Back | | ||
| Textbook theory read Waugh III p68-74 | ||
| Downstream velocity changes | ||
| Hjulstrom's curve | ||
| Afon Glaslyn map | ||
| Afon Glaslyn long profile | ||
| Random Project theme generator - work in pairs (or 3s) | ||
| For each pair spin the fruit machine and see which topic is randomly chosen for them to work on... | ||
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| Take your randomly generated 'theme' and develop these ... | ||
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Hypothesis Location/limits of field area Sub-questions Data to be collected (what, when and where?); Recording Sheet Equipment needed Sampling How to present data How to analyse data What we might find |
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| Be prepared to feedback your ideas to the class. | ||
| Fieldwork techniques: | ||
| http://geographyfieldwork.com/River%20Discharge%20Methodology.htm | ||
| Bedload Trap | ||
| Making a bedload trap for a small stream: | ||
| Dig a trench about 25cms deep across the stream (landowner's permission) | ||
| insert a wooden box into the trench. Ensure that the top of the box does not stick up above the river bed. | ||
| After a given interval (an hour or a day, depending on the volume of bedload being transported) remove the box from the river and weigh the material.) | ||
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| Pebble Shapes - see http://www.geographyteachingtoday.org.uk/fieldwork/resource/fieldwork-techniques/rivers/sediment-analysis1/ | ||
| Pebble Size - measure the middle axis! | ||
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| Suspended sediment | ||
| Discuss with teacher | ||
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| Solution Load: | ||
| Discuss with teacher. | ||