London Nature And Impact Of Physical Environment Flashcards
What percentage of London is on a flood plane?
15%
How many air pollution episodes occurred in London from 1948-1968?
8
When was the Great Smog in London?
5th and 9th December 1952
What did the smoke concentration reach during the Great Smog and how many deaths did it cause?
56 times the normal level
Caused 4000 deaths
When was the Clean Air Act introduced to London?
1956
What do nitrogen dioxide levels in London breach?
The EU limits
How many Londoners are dying early each year because of toxic air?
Over 9000
What did the 2014 Public Health England report on air pollution?
5.3% of deaths in people over 25 years old in London are linked to pollution
How much warmer is London’s urban heat island that the surrounding urban areas?
10 degrees
What does the increased heat of the city mean?
Consumption of more energy and water in summer months
What percentage of the river Thames’ samples revealed a presence of harmful bacteria?
92%
What is the cause of pollution in the river Thames?
Combined sewage system is unable to cope with population size and we want to prevent flooding after rainfall, so sometimes the mix is discharged into the river
How many water sources does the river Thames have?
5: tidal, fluvial, surface, sewers, groundwater