Criccieth Flashcards
What do NASA scientists say that the global temperatures have increased by since 1800, and what proportion of this warming has happened since 1975?
- tmerpature increase of 1 degree since 1800
- 2/3 of this warming has happened since 1975.
How high could temperatures be by 2100?
some predict as high as 4.1 to 4.8 degrees higher
how long is Criccieth bay, and how is it orientated?
2km long, orientated in a SW direction.
what is headland in the east made of and what is the headland in the west made of?
East - Microgabbro igneous rock (known locally as Black rock)
West - Rhyolite
what is the centre of the bay made out of?
Unconsolidated glacial till
without protection, at what rate would the centre of the bay erode?
1 metre every 10 years
what evidence of previous sea level rise can be found?
remains of a submerged forest in the centre of the bay
According to the IPCC, how much higher will the sea level be by 2100?
0.8 metres higher by 2100
According to the IPCC, what has the annual rate of sea level rise increased too?
It has increased from 3.6mm every year to 5mm every year
what will the managed retreat scheme in the east destroy?
farmland and a railway line
untill what year will the town in the West be protected, and what will happen when the managed retreat scheme starts?
The town will be protected until 2105, at which point a negative multiplier effect may occur.
what positive effects will the managed retreat scheme in the east have?
Will increase wetland habitats, which will increase the biodiversity of halophytic species of plant and the fauna that feeds upon them.
what is the population of Criccieth town?
1700
what hard engineering methods are in place?
groynes and 400m of sea wall
what evidence is there that Criccieth is already suseptible to the effects of climate change?
S torm Ciara in 2020 saw winds above 90 mph and a storm surge powerful enough to damage the sea wall.
