Vulcanicity case studies Flashcards

You may prefer our related Brainscape-certified flashcards:
0
Q

Montserrat impacts?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Montserrat background?

A

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”.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Responses for Montserrat?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Nevada Del Ruiz background?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Nevada Del Ruiz impacts?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Nevada del Ruiz solutions?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Mount Ontake background?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Mount Ontake impacts?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Mount Ontake solutions?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Mount Etna background?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Mount Etna impacts?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Mount Etna solutions?

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly