Case study: Deficits in the Hydological cycle and the human influences
- Created by: jazmoon_
- Created on: 09-04-18 10:08
View mindmap
- Drought: Human Influences
- Physical factors are most associated with drought
- But human factors can exacerbate the impacts
- Human factors do not cause drought
- POSITIVE FEEDBACK LOOP
- 1999 - 2000 Ethiopian/Eritrean drought and famine = 10 million people needing aid
- The impacts of the drought were increased by socio economic conditions
- Growing environmental degradation
- Overgrazing
- deforestation
- Rural Poverty
- The war that took place between these two countries lead to food shortages and aid blockages
- Growing environmental degradation
- The impacts of the drought were increased by socio economic conditions
- The Sahel is a very arid region and contains some of the poorest developing countries
- Burkina Faso, Sudan, Ethiopia
- High variability of rainfall
- Seasonally
- Drought sensitive = Transitional climate zone
- Normal conditions = mean annual rainfall is concentrated in the summer
- 100mm - Very Arid
- 800mm along southern margins
- Annually
- Year to year there is huge variability - Saharan Fringe
- Warm sea surface temperatures in tropical seas favour strong convectional uplift over the ocean
- Weaken the West African monsoon and contributes to Sahel Drought
- Decadal anomalies
- Relatively wet periods from 1900 to 1965
- 1970 to 2011 on average very arid, low rainfall
- Seasonally
- Physical factors are most associated with drought
Similar Geography resources:
Teacher recommended
Teacher recommended
Teacher recommended
Comments
No comments have yet been made