1.9a - Heimaey / Hawaii

Question 1

Where is Heimaey and what was it affected by?

Answer 1

South coast of Iceland, affected by a volcanic eruption of eldfell.

Question 2

What is the difficulty with modifying tectonic events?

Answer 2

Forces are too powerful and almost impossible to predict the exact time of occurrence.

Question 3

Name 2 solutions for modifying the impact of a volcanic eruption on an area?

Answer 3

1) lava diversion barriers (mt. Etna)

2) spraying seawater to cool or solidify lava flow

Question 4

Name 3 solutions to modifying the impact of tsunamis?

Answer 4

1) offshore barriers
2) higher/stronger sea walls/ mangrove trees e.g. 7000 mangrove trees planted after 2004 Indian Ocean tsunami in Indonesia.
3) engineers and scientists developing more modern t chnology to perhaps regulate wave height/ energy.

Question 5

How can we reduce the risk of Lahars?

Answer 5

By draining crater lakes

Question 6

What are macro responses?

Answer 6

Short terms solutions such as avoiding the entire area of devastation

Question 7

What is the problem with macro responses?

Answer 7

They can be effective as an immediate response or a prevention method but it doesn’t take into account, the regeneration of a devastated area.

Question 8

Is it viable to continue saving areas which are regularly prone to natural devastation?

Answer 8

No, it creates more economical, social and environmental damage and there is no point in it being repaired each time.