Dawlish Warren Coastal management and conflicting views at

Dawlish Warren Coastal management and conflicting views at Dawlish Warren?

Data presentation and analysis This involves: • presentation of data collected in an appropriate range of forms. This could include maps, graphs, photographs, drawings or a combination; • a description of the key findings shown by the data; • an explanation of the key findings. Coastal management and conflicting views at Dawlish Warren?

1 Use a range of data representative techniques. Try to combine maps, photographs and graphs to gain more marks- use A 3 if necessary Process the data that you collected at Dawlish Warren 2 DATA PRESENTATION AND DESCRIPTION OF RESULTS 3 All graphs, maps, tables, charts, sketches, photographs and diagrams must be accurate, clearly titled, labelled and referred to in your writing. 4 Describe what your maps, graphs, sketches, photos, tables and diagrams show. Try to have the description next to the relevant graph Try to state the obvious, say what the result shows and quote figures. Then explain how your results help to explain how there may be conflicting views regarding the coastal defences at Dawlish Warren? Coastal management and conflicting views at Dawlish Warren?

Data presentation You need to look at your chosen outcomes for your study. Decide which data helps you to demonstrate your understanding. Produce the relevant maps, graphs, field sketches and annotated photos. You may use or draw your graphs by hand. Certain graphs, such as the height of the beach (groyne measurements) are best drawn by hand. Coastal management and conflicting views at Dawlish Warren?

Data presentation and analysis You need to take each of you outcomes in turn and produce your graphs and maps which best help you analyse that outcome. For example: If you were looking at how successful groynes were at preventing longshore drift, you would use the groyne measurements. You then need to comment on who would like the groynes to be repaired and who would not like that money spent on them – identify stakeholders! Coastal management and conflicting views at Dawlish Warren?

Data presentation Groyne No Pylon No 1 5 10 15 2 5 10 15 3 5 10 15 4 5 10 15 5 5 10 15 6 5 10 15 20 7 5 10 15 8 5 10 15 9 5 10 15 Up drift (cm) 57 101 230 223 270 268 185 245 ? 135 220 260 145 270 254 112 206 200 168 195 270 272 217 265 268 135 225 240 Down Drift (cm) Difference (cm) 153 96 245 44 285 55 226 3 285 15 290 22 181 4 281 36 ? 204 69 259 39 284 24 163 18 312 42 258 42 162 50 233 27 228 28 208 40 216 21 282 12 310 38 223 6 275 10 286 18 191 56 257 32 209 31 Avge difference (cm) Beach width -updift (m) 64. 00 47 Beach width - downdrift (m) 37 13. 30 35. 7 29 20. 00 ? 44. 00 39 31 21. 30 46. 4 43. 6 36. 50 51 44. 3 23. 60 51. 3 44 11. 30 39. 9 37. 8 39. 60 63. 8 59. 7 ? Use your data to produce a series of graphs. Remember for groyne measurements and beach height, we measured air space NOT sediment depth. Coastal management and conflicting views at Dawlish Warren?

Data presentation Measurements of sediment on updrift and downdrift sides of the groynes. REMEMBER updrift towards the shops and proximal end of the spit. Downdrift is towards Exmouth and the distal end of the spit. You measured the ‘airspace’ from the top of the pylon to the beach! Coastal management and conflicting views at Dawlish Warren?

Data presentation Shade in the updrift and downdrift measurements Remember that you measured the air space above the sand. So you measure ‘ 0’ the top of the pylon. What do you notice about the sediment height between the updrift and downdrift side? Why is the case? Coastal management and conflicting views at Dawlish Warren?

Data presentation 2 1 Groyne number 5 4 3 2 1 0 10 20 30 Width of beach 40 50 Coastal management and conflicting views at Dawlish Warren?

Data presentation 5 Groyne number 4 3 2 1 0 5 10 15 Updrift Downdrift 20 25 30 Width of beach 35 40 45 50 What do you notice about the beach width between the updrift and downdrift side? Why is the case? How is this related to the prevailing wind? Were the groynes working? Use photos! Coastal management and conflicting views at Dawlish Warren?

Data presentation Wave frequency Include data to show what type of waves were operating along the coast. REMEMBER that conditions change – we went on one day only! Coastal management and conflicting views at Dawlish Warren?

Data presentation Visitors centre Question Answer How are the geomorphic processes affecting this coastline? Why does the area need protection? What is its value? (Think about social, economic & environmental reasons) Are these methods sustainable as it is impossible to halt the geomorphic processes? Do people agree with the protection methods being used? How successful are the coastal defences at Dawlish Warren?

Data presentation Identify the land uses in the tourist zone and along the spit. Then identify which defences are being used. Which stakeholders would use which part of the spit? Coastal management and conflicting views at Dawlish Warren?

Data presentation Colour code your map to show the land use. Coastal management and conflicting views at Dawlish Warren?

Data presentation A. Rock-armour (rip rap) Cost: £ 3, 500 per metre Built 1977, many repairs since. Rebuilt 1992. Large interlocked boulders. B. Sea wall Cost: £ 6000 per metre Reflects waves & withstands waves breaking on it C. Concrete Revetment Cost: £ 2000 per metre Sloping concrete walll absorbs wave energy Direction of longshore drift F. Sea wall & rip rap Cost: £ 9500 per metre See comments above – much stronger combined D. Gabions (stones in wire baskets with cover by sand & marram grass) Cost: £ 100 per metre E. Groynes (18 built 1972 -73 to replace older rotten structures). Cost: £ 10, 000 per groyne Helps trap sand to keep it on the beach. Identify the location of ALL the sea defences and consider how successful they are at Dawlish Warren. Who would be happy with the defences used? Which stakeholders would not be happy? HINT! This information could be good to use within your assessment Coastal management and conflicting views at Dawlish Warren?

Data presentation What are the defences protecting? Why has this type of defence been built in this location? Sea Wall How it works Who would think this defence is a good idea? B: Sea Wall What are the defences protecting? Why has this type of defence been built in this location? How successful is this defence in limiting the effects of erosion, transportation or deposition. Rip Rap How it works How successful is this defence in limiting the effects of erosion, transportation or deposition. Who would think this defence is a good idea? Coastal management and conflicting views at Dawlish Warren?

Data presentation Complete your sea defence bi-polar analysis of the coastal defences: B: Sea Wall Bi-Polar Chart -3 -2 -1 0 1 2 3 Expensive Cheap Short Lived Long lasting Ugly Attractive Ineffective Effective High Safety risk to general public No obvious safety risk to the general public Poor access to the beach Good access to the beach Questions to think about … Are there any relationships between: a. cost and effectiveness? b. Attractiveness and effectiveness? c. Effectiveness and access to the beach? Etc etc. Coastal management and conflicting views at Dawlish Warren?

Data presentation Complete your questionnaire summaries: Do you recognise the sea defence? Yes/No Tick What is its purpose? To maintain the beach. To stop coastal flooding. To protect the buildings and people. To protect the golf course. To protect the railway Do you think the sea defence is effective? Yes/No Questions to think about … What are peoples’ perceptions of the defences at Dawlish Warren? coastal How reliable are their views? Are there any patterns between the views of the person and their reason for visiting Dawlish Warren? Are their any conflicts (disagreements) with peoples’ (stakeholders) opinions? Coastal management and conflicting views at Dawlish Warren?

To what extent is geology the main influence on the distinctive coastal landforms at Dawlish Warren? “They have presented their data in an appropriate range of maps, graphs and diagrams. ” “They have used their knowledge and understanding to thoroughly describe and explain their evidence. ” (ANNOTATIONS) Coastal management and conflicting views at Dawlish Warren?