volcanic - MOUNT ETNA Flashcards
where is it located
south west Italy, Sicily
what coastal city is it near
Catania
what type of plate boundary is it
destructive/convergent
what plates are involved
African subducts under eurasian
what is the lava type
basaltic
what are the features of the lava
mobile, runny, effusive
primary impacts of hazard include
people evacuated, airport closed, ash covered buildings
what is the name of the ski resort
Sapienza
secondary impacts
loss of tourism, airport re-opened, so2 plumes drift
which other countries have been affected by sulphur plumes
Libya and Egypt
what is the average magnitude
5
vei
volcanic
explosivity
index
what is the vei
2 or 3
what is the highest recorded vei
6
economy of sicily
generally wealthy but reliant on tourism and agriculture
response
reforestation and earth dam built to divert lava flow
what is the altitude of mount etna
3350m
know to be
europes most active volcano
how many people live on the slopes of mount etna
over 900,000
characteristics of the eruptions
mostly effusive
low viscosity lava flows
what did slow moving lava threaten
to destroy property
e.g. grand hotel and astrophysics observatory
what was used to redirect lava flows from inhabited areas
earth works
what areas was threatened by the largest volume of lava
zafferana
what was done to reduce the impact of these lava flows
earth dam built - temporarily hold the lava flow
rock and concrete blocks dropped to plug the lava channel
explosives used to divert the lava flow into new human-made channel
