60280
Description
Mind Map by Jodie Goodacre, updated more than 1 year ago
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Created by Jodie Goodacre
about 11 years ago
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Increasing risks
- The majority of the world's population lives in low-lying coastal areas
- A significant proportion of those densely populated
coastal areas are exposed to the tsunamis
generated by earthquakes
- The impact of storm surges is expected to worsen as a
result of the rise in sea levels
- The rise in sea level is global. Therefore, all coastal areas
may expect higher rates of coastal erosion and a higher risk
of flooding
- The continuing concentration of settlement and development in coastal areas
will make problems even more serious
- The 2004 Asian Tsunami
- 26th December 2004
- Epicentre was off the west coast of Sumatra, Indonesia
- Killed around 280,000 people and inundated coastal communities
- $7 billion in aid was donated
- Had an impact on the survivors mental health
- Estimated that 50% of all survivors had problems
and that 5-10% have serious mental problems
requiring treatment
- Estimated that 50% of all survivors had problems
and that 5-10% have serious mental problems
requiring treatment
- 40% incidence of PTSD in
children affected by the tsunami
- 26th December 2004
- Holderness on the Retreat
- Northeast coast of England
- Suffers fastest rate of coastal erosion in Europe
- The coastline is mainly cliffs
between 20 and 30m high
- Soft, easily eroded glacial
sands, gravels and boulder clay
- Soft, easily eroded glacial
sands, gravels and boulder clay
- Erosion at a rate of more than 1m per year
- Erosion up to 10m per year
- 4km of land has been lost since Roman times
- Suffered badly in the 1953 storm surge
- Exposed, particularly to waves from the North East
- Waves are destructive
- Longshore drift provides nourishment for Spurn Head
- Northeast coast of England
- Thames Estuary
- Has a long history of flooding
- Tide levels are steadily increasing
- Tide levels are rising in the Thames
estuary relative to the land by about
60cm per centuary
- When a trough of low pressure
moves across the Atlantic towards
the British Isles, the sea beneath it
rises above the normal level
- This creates a 'hump' of
water, which moves
eastwards with the depression
- This creates a 'hump' of
water, which moves
eastwards with the depression
- The Thames Barrage was completed in 1984
- Gateway reduces flood risk
- Has a long history of flooding
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