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OCR A Level Geography > Mount Ontake > Flashcards

Flashcards in Mount Ontake Deck (17)
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1

when was the eruption

27th September 2014

2

Ontake sits between the border of which two plates

Eurasian and North American

3

what sub plates does Ontake sit between

Amurian and Okhotsk

4

how many eruptions has Japan experienced in the last 2000 years

1200

5

What is widespread in Japan

subduction

6

where is Ontake located

200km west of Tokyo on Honshu

7

up to what date was Ontake dormant to

october 1979

8

when were the phreatic eruptions

1991 and 2007

9

why were so many people on Ontake

it is a tourist destination popular with hikers and climbers

10

what time did it erupt

midday

11

was Ontake under any alerts or warnings when it erupted

no

12

why was the eruption not detected in advance

monitoring detects seismic activity, ground bulging, or magma. but this was a phreatic eruption

13

what caused the eruption

water superheated by magma

14

what were the main hazards

ash, pyroclastic flow, volcanic bombs, lahars

15

how many died

63

16

what shut for 3 months

the Ontake 2240 ski resort in Nagano Prefecture

17

30/32 what were damaged

Hakusai cabbage farms in Kiso