Key Physical Case Study Facts Flashcards
High energy coastline - rate of erosion of Shale
0.8m/year
High energy coastline - rate of erosion - chalk
0.1m/year
High energy coastline - shale example
Robin hoods bay
High energy coastline - chalk example
Flamborough head
High energy coastline - fetch
1500km
Low energy coastline - historical sediment supply
120 million tonnes per year from Nile river
Low energy coastline - sediment supply now - why
None - building of Aswan dam
Low energy coastline - land forms
Spit, lagoon, sabkhas, onshore bars, sand dunes
Human intervention coastline - why chosen
Pakiri is 60km from Auckland - sand is key ingredient in cement
Human intervention coastline - ratio of inputs and outputs
5:1 outputs:inputs - leading to sand deficit
Human intervention coastline - consequences
35m breach of spit
Managed coastline - what management, and width of beach now
Groynes - 80m wide beach
Managed coastline - width of beach where no management
0m - no groynes - by golf course
Amazon - carbon per hectare
400 Tonnes/hectare
Amazon - NPP - amount and meaning
Amount of photosynthesis - 2500g per m2 per year
Amazon - rainfall
2500mm per year
Amazon - rate of surface runoff if deforestation occurs
27 times more SR
Amazon - carbon stored by grasslands
16 tonnes of carbon per hectare
Amazon - impacts of deforestation
Increase interception - rainfall 1/2s - because of fall in evapotranspiration
Tundra - carbon stored
4-29 tonnes per hectare
Tundra - NPP and meaning
Amount of photosynthesis- 200g per m2 per year
Tundra - annual rainfall
50-300mm per year
Tundra - total carbon stored in soil
1600 giga-tonnes
