Studied by 2 people
Ocean ridges
Where plates move apart and magma rises
Subduction zones
Where an oceanic plate sub ducts under continental plate
Rift valleys
Where constructive plate margins occur in continental areas
Hot spots
Volcanically active areas not on plate margins
1500
Amount of active volcanoes
23mm
How far mid Atlantic ridge diverges per year
Nuees ardentes
Dense pyroclastic flows
Lahars
Fast flowing volcanic mudflows
3000
How many small earthquakes preceded Eyjafjallajökull
317,000
Iceland population
800
How many people needed to be evacuated at Eyjafjallajökull
£32,000
EU GDP per capita in 2010
20/3/2010
When Eyjafjallajökull erupted
107,000
How many flights were cancelled by Eyjafjallajökull in the first 24 hours
£130 million daily
How much money airlines were losing
20%
How much of the Kenyan economy is based on exports of green vegetables
7 million
How many passengers were stranded worldwide
20,000
How many evacuated at pinatubo
847
How many dead at pinatubo
10,000
How many homeless at pinatubo
19km
Height of pinatubo ash cloud
4
VEI of Eyjafjallajökull
6
VEI of pinatubo
Note 
Flashcard (86)