Vulcanicity case studies

Question 0

Montserrat impacts?

Answer 0

1) pyroclastic flows killed 19 people.
2) 55,00 remaining after.
3) ageing population
4) crops were killed- however in the future this soil may be very fertile
5) destroyed airport ruined tourism

Question 1

Montserrat background?

Answer 1

1) volcano is called the soufriere hills volcano.
2) destructive plate boundary.
3) North American plate subducting under the Caribbean.
4) 10500 originally living there.
5) part of the “lesser Antilles arcs”.

Question 2

Responses for Montserrat?

Answer 2

1) evacuation
2) the uk’s aid wasn’t very helpful at all- for example they sent tents which were exposed to strong winds
3) aid was delayed
4) rebuilding the north
5) ageing population

Question 3

Nevada Del Ruiz background?

Answer 3

1) November 13th 1985
2) Nazca plate subducting under the SA plate
3) Overshadows Amero
4) Part of the Andean volcanic belt

Question 4

Nevada Del Ruiz impacts?

Answer 4

1) lahars travelled as far as 40 miles with speeds up to 50 mp/h
2) lahars killed up to 70% Amero
3) 3,400 hectares of land destroyed
4) cost for the economy was $7.7 billion

Question 5

Nevada del Ruiz solutions?

Answer 5

1) Colombian Red Cross and civil defence where the first to help
2) alert procedures
3) schools were educated on evacuations etc
4) evacuation routes identified

Question 6

Mount Ontake background?

Answer 6

1) triple subduction of the Eurasian plate below the pacific plate and phillipene plate
2) unexpected!
3) located on Japanese Island of Honschu
4) September 27th 2014

Question 7

Mount Ontake impacts?

Answer 7

1) 57 died
2) 6 still missing
3) harmful gasses

Question 8

Mount Ontake solutions?

Answer 8

1) police immediately raced to search for people
2) however search was called off due to fears of harmful gasses
3) last bodies were found on October the 11th

Question 9

Mount Etna background?

Answer 9

1) 23rd may 1992
2) African plate under the Eurasian plate
3) Europes biggest and most active volcano
4) overshadows the town of zafferana

Question 10

Mount Etna impacts?

Answer 10

1) no deaths
2) lava destroyed springs providing water for 8,000 people in zafferana
3) vineyards and chestnut fields destroyed

Question 11

Mount Etna solutions?

Answer 11

1) earthened dams were created to try and trap the lava in the Valle de Bove but they were overtopped.
2) the US marines were called in for ‘operation volcano buster.’ They flew in cargo helicopters and dropped big concrete blocks on the edges of the lava.
3) this allowed enough time (two weeks) for a diversion channel to be built