Coastal Flooding Case Studies Flashcards
What percentage of the Maldives would be lost from a 50cm sea level rise?
77%
If 77% of the Maldives was lost what proportion of the economic activity would be lost?
40% (tourism activity)
What income is the Maldives?
Middle income
Give some context data on the Maldives.
3400 people over 1200 islands with the highest point just 2.3 meters above sea level
What is an example of delta subsidence and give some data on it.
50 large islands in the Ganges Brahmaputra delta (Bangladesh) subsided 1.5 meters since 1960 due to all of studied reasons including flood defences stopping fresh sediment
What would a 40 cm sea level rise do to Bangladesh?
Submerge 11% creating 7-10 million refugees
How much does a 1km belt of mangroves do to a storm surge?
Reduces its height by 0.5 meters
What proportion of mangrove forests have been removed and why?
50% to make way for shrimp farms + tourist beaches
What proportion of Bangladesh’s sundarbans have been removed?
71%
What had the removal of Bangladesh’s mangroves led to?
Increased erosion rates to 200 meters per year
How big was the storm Xavier storm surge?
3meters
How many homes were flooded during storm Xavier?
1400
How many homes were protected by the Thames barrier during storm Xavier?
800000 homes
How big was the cyclone sidr storm surge?
6 meters
How many homes were destroyed during cyclone sidr?
1.6 million
How many deaths did cyclone sidr cause ?
15000
What future sea level rise is predicted for Australia? ( by the IPCC)
28-98cm by 2100
What social effects would a 1 meter sea level rise have in Australia?
Loss of 75 hospitals
44 water + sewage plants
258 emergency service stations
What economic effect would a 1 meter SLR have in australia?
£72 billion residential property
£67 billion road + rail infrastructure
What environmental effect would a 1m SLR have in Australia?
Estimated loss of 50% of Great Barrier Reef by 2050 due to coral bleaching
What sea level rise does the IPCC estimate for the Philippines?
60cm to 1 meter by 2100
What are the social effects of a 1 meter SLR on the Philippines?
2.3 million people affected with 62%of Manila
What would be the tourism effect of a 1 meter sea level rise in the Philippines?
123000m squared of san Fernandinho beach lost estimated loss in revenue of 95000 per year
What % of tacloban was destroyed by typhoon Haiyan and how many deaths did the storm cause?
90% and 6300 deaths+ 6 million didplaced
A 1m sea level rise in the Philippines would have what effect on fishing?
Coral bleaching reducing fish stocks, industry loss of £168000 per year, income cannot be replaced in formal sector
What has Chittagong Bangladesh done to reduce risk for coastal communities ( from storms + SLR)?
2012- coastal climate resilient infrastructure project
Upgrades to 25 cyclone shelters - can serve as schools
Improved water + sewage infrastructure
Embankments lined with halophytic vegetation - local people oversee projects
What is the Mangroves for the future initiative doing in Bangladesh and the Maldives?
400ha of mangroves reestablished at satkhira Bangladesh
Project focussed on ecosystem restoration and livelihood diversification for sudtainable coastal management
What has the IPCC predicted for sea level rise?
Predicted with a high degree of confidence sea levels will rise 18-59 cm by 2100
What has the IPCC predicted about tropical storms
Predicted with a low free of confidence that frequency will remain unchanged but tropical storms will increase in strength by 2-11% by 2100
