case studies Flashcards
1
Q
UK FLOODS - physical
A
El Nino- warmer and wetter conditions promoting depressions
-sea temp already above average within sub-tropic Atlantic, 2016 hottest year
2
Q
UK FLOODS - human
A
- building new housing on floodplains, risk grown by 1.2% per yr
- europe as least wooded area
- urbanisation = impermeable surfaces, 82% live urban
- river mismanagement: straightening increases flood risk down stream
3
Q
BANGLADESH FLOODS - physical
A
- snow melt from the Himalayas
- thermal expansion of rivers.. great risk at 70% of land less than 1m above sea level
- country is a floodplain
- prone to tropical storms
4
Q
BANGALADESH FLOODS - human
A
- deforestation in the himalayas = rapid run off
- urbanisation of flood plain increases magnitude of flood
5
Q
PAKISTAN FLOODS - physical
A
- monsoon wind system
- ITCZ
- blocked by himalays leading to orographic rainfall
- climate change increase of 2 degrees Indian Ocean
6
Q
PAKISTAN FLOODS - human
A
deforestation and illegal logging on steep land= rapid overland flow
7
Q
Australia climate change (-)
A
- Permanent snow levels at record low, snowpack is crucial as provide 1/3 of water for cities and farms
- increased evaporation, decade long droughts, mega droughts lasting 30 years
8
Q
Sahel (+) climate change
A
- increase rainfall improve yields, decreasing famine, catalysing development
- several wet years providing opportunity for re-greening, low cost afforestifn
