EQ3 - indicative mock content Flashcards
What are the physical threats to eroding coastlines?
1) soft geology
2) Cliffs that are vulnerable to mass movement
3) Long-wave fetch
4) Cliffs with structural weakness
5) Strong Long shore drift
What are the human factors that increase erosional threat?
1) Offshore dredging - Hallsands
2) Dams - Aswan Dam causing 25m erosion annually at Rosetta
The Holdernes cost - What are the temporal variations that cause varying erosion?
- Winter storms = more erosion
- summer storms = less erosion
The Holderness coast - What are the spatial variations that cause varying erosion?
- ords = focused spatial erosion
- sea defences cause sediment starvation in places such as Mappleton
The Holderness coast = What are the socio-economic impacts of this erosion?
social = Stress and anxiety caused by eroding land.
economic - £25,000 - £40,000 per demolition.
24 homes may be destroyed.
What are local physical factors increasing flood risk?
low-lying land - Maldives
Funnelling coastline - Bangladesh
What are the regional factors increasing flood risk?
- cylones
- storm surges
What human factors increase Bangladesh’s flood vulnerability?
Subsidence from offshore dredging
Deforestation of mangroves
What are the physical threats increasing the flood vulnerability of Bangladesh?
- 700 rivers
- funnelling coastline
- 85% of land is <10 m sea level
What are the local human factors that influence flood risk?
Degree of subsidence (Human / Physical)
Vegetation removal (Human)
Population growth (Human)
What are the global factors that increase flood risk?
Global warming
What are mitigation strategies against flooding caused by global warming?
Renewables
Recyclables
Radical technology
Reduced consumption
What are the adaptation strategies against flooding caused by global warming?
- flood barriers
- sea walls
- GM plants resistant to floods
