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PAPER 3: Geographical Applications
SECTION B: Fieldwork 1
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Suitable Questions for Geographical Enquiry
Enquiry 2: What is our hypothesis? Project title: Have flood defences been successful at alleviating the pressure of flooding in Shrewsbury? Hypothesis What are physical and human factors effecting flooding in Shrewsbury? How sustainable are the flood defences in Shrewsbury? Needs looking at. Photo Shrewsbury floods of 2000
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Suitable Questions for Geographical Enquiry
Enquiry 2: Geographical Theory Human Causes of flooding: Urbanisation/ Impermeable ground (concrete/ tarmac)/ Drains/ deforestation Physical Causes of flooding: snowmelt/ storms/ saturated ground Soft Engineering: (natural/nothing built) Plant more trees/ sand bags/ text message warnings/ flood plain zoning Hard engineering: (built up defence) Flood embankments/ diversion channels/ flood relief channels/ drains/ flood gates
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Identifying and reducing risks associated with fieldwork
Enquiry 2: Risk Assessment Project title: Have flood defences been successful at alleviating the pressure of flooding in Shrewsbury? Hazard Risk Control Abduction Groups of 3 Traffic Crossings Weather Clothing Strangers/ getting lost/ vehicles/ tripping/
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Locations of Fieldwork
Enquiry 2- Study Area- Local Scale Shrewsbury Shropshire West England (Border of Wales) Meander of the River Severn/ size/ accessible via ____ crossing river Severn or meander neck.
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Description and justification of data collection methods
Sampling Strategy Random So not biased
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Description and justification of data collection methods
Methods/ Limitations Storm Simulation Poured 2 litres 3 plots (vegetation/ concrete/ soil) See how flood risk changed depending on ground type Limitation: timing wrong/ some water fell off before could catch/ frozen soil plot Flood Risk Land Use Survey Used map of town centre Noted shop type and whether would be at risk Limitation: not know area/ got lost Interviews and Questionnaires: Locals and shop keepers about flood risk opinion Limitation: not all locals/ shop owners would answer/ some not local so didn’t know/ not ask enough people Flood Defence Walk: Looked and mapped out different defences used to stop flooding Limitation: didn’t know cost/ couldn’t see in action/ some not yet tested as new
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Flood Risk Land Use Survey (GIS Choropleth Map) Results
Selecting appropriate ways to present fieldwork data Flood Risk Land Use Survey (GIS Choropleth Map) Results Areas with more vegetation have a lower flood vulnerability (e.g. Dingle Gardens Quarry Park): permeable ground/ vegetation taking up water/ interception increasing lag time. Value of land = lower and so flood damage will be less. Areas that are more built up have a higher flood vulnerability (city Centre): more impermeable surfaces therefore there is increased surface run off and so shorter lag time.
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Shop Owner Interview (Proportional Symbols) Results
Selecting appropriate ways to present fieldwork data Shop Owner Interview (Proportional Symbols) Results General pattern: Businesses to the north of the river Severn in Frankwell, Shrewsbury have the perception that flood management in Shrewsbury is successful. South of the river Seven in Frankwell= not successful.
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Describe, Analyse and Explain fieldwork data
Storm Simulation Plots (Hydrographs) Results Storm Simulation hydrographs The site with the longest lag time is low intensity grassland (70 seconds), site with shortest lag time is high intensity urban land use (35 seconds). Vegetation intercepts some rainfall = longer lag time decreased flood risk/ takes up some water reduces peak discharge= reduced flood risk. The site with shortest lag time has higher flood risk as water is getting to the river quicker. This was the concrete plot. Impermeable surfaces increase surface run off, route of water to river quicker = shorter lag time/ steeper rising limb/ higher peak discharge= increased flood risk
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Describe, Analyse and Explain fieldwork data
Flood Defence Walk Results Removable Flood Gates at university car park Storm run off drains (underground storage) Flood embankments/ Flood Walls
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Reach conclusions and evaluate geographical Enquiry
Hypothesis What are physical and human factors effecting flooding in Shrewsbury? Evidence of: impermeable surfaces and not enough green space so increased flood risk. Proved by hydrographs of concrete storm plots and people in more urban areas being more worried about flooding. 2. How sustainable are the flood defences in Shrewsbury? Removeable gates/ extra storage and flood walls means Shrewsbury has been protected in the most recent floods. This means they are sustainable.
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Reach conclusions and evaluate geographical Enquiry
Evaluation Fieldwork Data Not know enough about how defences worked – could get someone in from the environment agency to interview. Not enough questionnaires or interviews – more needed to be done. This would make more valid.
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Primary Data Collection (Physical) Primary Data Collection (Human)
Limitation of Data collection methods: Storm Simulation Model Flood Risk Survey Interview & Questionnaire Limitation of Data: Selection of sites Scale of project Why is it appropriate for the enquiry? Other useful data: Where is it? Evaluation Answer initial research question Study Area Have flood defences been successful in alleviating the pressure of flooding in Shrewsbury? Geographical Theory Underpinning Enquiry How valid are your conclusions? Reliability of data Conclusions Potential Hazards Risk Assessment Data Analysis Primary Data Collection (Physical) Hydrographs Describe Data Reasons for data Link to theory Flood Risk Survey Describe Data Reasons for data Link to theory How to reduce risk Storm Simulation Description Justification Primary Data Collection (Human) Flood Defence Walk - Describe Data Reasons for data Link to theory Questionnaire Description Justification Flood Risk Survey Description Justification Flood Defence Walk Description Justification
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