Mt Etna

Question 1

When

Answer 1

1991-93

Question 2

Has one of the longest documented records of..

Answer 2

Eruptions, dating back to 1500 bc

Question 3

Most prominent feature

Answer 3

Valle de Bove- 5-10km horseshoe shaped Caldera

Question 4

How many prominent summit craters

Answer 4

3

Question 5

Lava flows have reached…

Answer 5

The sea over a broad area on the south east flank of Mt Etna

Question 6

Dangerous?

Answer 6

Although it can be destructive, the volcano is not regarded as particularly dangerous

Question 7

Humans?

Answer 7

Thousands of people love on its slopes and in the surrounding areas, working the fertile volcanic soils

Question 8

Protective measures installed

Answer 8

• large Earth barrier- 400 m (slow lava)
• smaller barriers
• dropping concrete blocks into the upper lava tube
• engineers blasted openings in the lava tube

Question 9

When did they add protective measures

Answer 9

When lava was about rob pour into the settlement of Zafferana

Question 10

The success of the production schemes was based upon the following favourable factors:

Answer 10

• low effusion rates
• high elevation if the eruptive vents
• possibility of diverting the lava flow into uninhabited areas (at least 7km from the nearest village)

Question 11

2002

Answer 11

More serious eruption and lava flows completely destroyed the ski station, two restaurants, ski hire firms, souvenir shops and ski school. Clouds of ash harming Catania.