climate change and the coast Flashcards
lowest sea level was recorded ____ years ago
22,000
subsistence
coastal areas sinking, often this is due to excess groundwater extraction which makes the sea level higher
water volume change
changed due to either thermal expansion or addition of extra water from land stores (ice melt)
earths oceans are taking in ___% of the heat from global warming
90%
there’s estimated to be a 1-4ft increase in sea level over the next ___ years
1-4ft in 80 years
of all the ice in Antarctic melted there would be a ___m increase in sea level
65m
what coastal issues come from climate change?
- increased storms
- more storm surges
- increased erosion
- higher sea levels
isostatic change
local changes in sea level resulting fro the land rising and falling relative to the sea
ecstatic change
global change in sea level rise resulting from a fall or rise in the actual sea itself (e.g. ice melt will lead to a rise)
why is it worth protecting the UK coastline from climate change and increased sea levels?
- 40% manufacturing near the coast
- 16.9million people live within coastal zone
- only 9% of land in coast zone is not economically useful, the rest is used for living/working etc
isostatic rebound
adjustment of land following ice melt (the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period)