Sundarban

Question 1

back ground?

Answer 1

largest Delta - 10000km
southern Bangladesh and India on the bay of Bengal
formed of the Ganges, Brahmaputra and meghna

Question 2

Coastal processes?

Answer 2

tidal action is the primary process that shapes the coastal landscape.

a dense ,well interconnecting river channels glow across clay and silt deposits.

larger channels flow north to south - 2km wide

Question 3

risks?

Answer 3

lack of fresh water for drinking and irrigation, diverted up stream.

population needs more fuel and land, cutting down the mangrove forest

dangerous animals such as tigers, sharks and crocodiles.

low lying land is at risk from rising sea levels

Question 4

Land? what does it provide?

Answer 4

flat, firtile land, growing rice
made firtile by alluvium.

provides - fish , crabs, honey, Nipa palm leaves

Question 5

what does the mangrove provide?

Answer 5

economic value of $12000
30 trees per 0.01 hectare reduce tsunami by 90%
provides timber for construction, firewood a d furniture.
protection against coastal erosion, roots bind to soil.

Question 6

form new islands?

Answer 6

non cohesive sediments like sand are washed out of the delta and deposited on banks or chars whare the river mouths.

strong south westerly monsoon winds blow them into large ranges of sand dunes.

with protection of the dunes, finer silts washed I to the bay are deposited, wave action adds further shape, creates new islands

Question 7

resilience

Answer 7

cope with challenge

public health engineering department is increasing access to clean water and sanitation to improve health

better roads and bridges are built to improve access for visitors, damages the forests

electricity is provided to more areas via solar panel subsidies. easier flood warnings and employment.

Question 8

mitigation?

Answer 8

reducing the severity of hazards

3500km of embankments built , 800km are vunrable to breach during storms and tsunami

coastal management aims to protect the mangrove forest and replant, difficult to prevent illegal logging, mangrove may not withstand sea level rise.

mitigate impacts of extreme events, government and NGOs provided funding for cyclone shelters and early warning systems to help people shelter and evacuate.

Question 9

adaptation ?

Answer 9

adjusting behaviour to fit environment.

salt resistance varieties of crops are being grown, help with flooding and sea level rise, reduce bio diversity and Increase disease risk.

houses built in stilts , roads cannot be as easily protected.

non intrusive farming and promoting eco tourism to ensure the fragile environment remains relatively undamaged and useable for future generations