57483
Descrição
Mapa Mental por Ruth Armitage, atualizado more than 1 year ago
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Criado por Ruth Armitage
mais de 11 anos atrás
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|
Flooding case studies
- Bangladesh
- Physical causes
- Low lying country - mostly
delta - The Ganges, The
Brahmaputra, The
Meghna
- Gently sloped flood
plain - water spreads
over large areas and
material in the flood
plain erodes the banks
- Sources of the rivers are in
the Himalayas, so monsoon
rainfall is intensified by the
height of the land
- Snowmelt from the
Himalayas adds to
discharge in Spring
- Low lying country - mostly
delta - The Ganges, The
Brahmaputra, The
Meghna
- Human causes
- Rapid urbanisation - Dhaka
at the confluence of The
Ganges and The Meghna
- Many people are poor and
poorly prepared for floods
- Population pressure
in Nepal and Tibet to
the North
- Deforestation in the foothills of
the Himalayas as trees are
cleared for fuel and grazing land
- Deforestation in the foothills of
the Himalayas as trees are
cleared for fuel and grazing land
- Use of irrigation channels to the north
- slows the flow of water
- more silt deposited
in land, less at the
edge of the delta
- more silt deposited
in land, less at the
edge of the delta
- slows the flow of water
- Rapid urbanisation - Dhaka
at the confluence of The
Ganges and The Meghna
- Social impacts
- 36 million made
homeless
- 800 deaths
- Lack of access to
clean drinking water
- Can result in gastro-intestinal
diseases e.g. Cholera
- Can result in gastro-intestinal
diseases e.g. Cholera
- Lack of access to
clean drinking water
- 36 million made
homeless
- Physical causes
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