Tonga case study

Question 1

what were the primary impacts of the erruption?#enviromental and social

Answer 1

-tephra
-pyroclastic flows
-covered capital city in a thick film of ash and volcanic dust

Question 2

what were the secondary impacts of the erruption?
#social

Answer 2

-3 reported deaths
-long lines of traffic prevented people from being able to reach areas of safety
-many reisdents slept in schools and churches
-people homeless- 56 houses destroyed

Question 3

what were the secondary impacts of the erruption?
#political, enviroemntal,economic

Answer 3

-1.2m tsunami wave
- undersea communications between tonga and the fijis disrupted
-56 houses detsroyed or damaged

Question 4

Where is tonga located

Answer 4

in the south pacific around 65km north of Tongas capital Nuku’alofa

Question 5

What was the size of the volcano before the erruption?

Answer 5

before the erruption it was 1.8km high and 20km wide. the volcano was only 114m above sea level at its heighest.

Question 6

When was the volcano declared dormant

Answer 6

11th jan 2022 after it was active in december 2021.

Question 7

When was the dates of the first erruption and those that follwed

Answer 7

13th jan 2022
14th jan 2022- plumes sent 20km into atmosphere
15th jan 2022- largest erruption yet

Question 8

Where could the explosion be heard from and how far away is this

Answer 8

New zealand-1481 miles

Question 9

What is the name of the arc of volcanic islands that tonga is part of called, making up the pacific ring of fire?

Answer 9

Tonga-keimadec islands

Question 10

What plates does tonga sit on and what is the type of plate boundary

Answer 10

destructive plate boundary,where the pacific plate meets the australasian plate.