2B.9AB Bangladesh - Located Place - Flooding Flashcards
What % of the population live in places less than 10 m above the sea bed
46%
Where does Bangladesh lie making it at more of a risk to flooding
On the floodplains of 3 major rivers which empty into the Bay of Bengal through a series of estuaries
What type of material make up the majority of the islands and where does it come form and what does this lead to
Unconsolidated material coming from the 3 main rivers as sediment deposits , which makes the islands highly unstable and susceptible to flooding
How much of Bangladesh’s land is estimated to disappear due to sea level rise
8000 km squared if the sea level rises 0.3 m from its current level
What’s the effect of fertile farmland being in short supply
Some farmers have to clear areas of mangrove forest on the delta and drain it to increase farmland
What’s the first human action that can increase susceptibility to flooding
Clearing and draining land for cultivation has caused some estuarine island to shrink and subside up to 1.5 m in the last 50 years
This in combination with its low elevation makes it more vulnerable from rising sea level
What’s the second human action can increase susceptibility to flooding , what statistic
Removing vegetation 70% of mangrove-forested coastline is retreating by up to 200 metres annually due to erosion , rising sea levels and removal of mangrove vegetation
Why is Bangladesh’s population vulnerable
Due to a combination id environmental,economic and social factors
High population density , poverty and reliance in agriculture makes communities susceptible to economic and food insecurity
Weak infrastructure , limited healthcare and political instability exacerbates vulnerability , reducing the capability to respond effectively to crises
When did cyclone side hit
November 2007
What did cyclone side bring
Storm surge up to 6 metres high , heavy rain and string winds up to 223km/h
What areas suffered the most fro cyclone sidr
Coastal districts and offshore islands
