1.6B Global Stand Still Flashcards Preview

9GE01 Tectonics > 1.6B Global Stand Still > Flashcards

Flashcards in 1.6B Global Stand Still Deck (10):
1

What are Lava Flows?

Lava flows are streams of molten rock that pour or ooze from an erupting vent. Lava is erupted during either nonexplosive activity or explosive lava fountains.

2

What is Pyroclastic material?

Pyroclastic material is another name for a cloud of ash, lava fragments carried through the air, and vapour. Such a flow is usually *very* hot, and moves *rapidly* due to buoyancy provided by the vapours. Pyroclastic flows can extend miles from the volcano, and devastate life and property within their paths.

3

What are Pyroclastic flows?

A dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed.

4

What are Lahar's?

Lahar's is an Indonesian term that describes a hot or cold mixture of water and rock fragments that flows down the slopes of a volcano and typically enters a river valley. Small seasonal events are sometimes referred to as "debris flows", especially in the Cascades.

5

When did the Eyjafjallajokull volcanic eruption occur?

In 2010, 14th April

6

How many people died in this so called 'megaevent'?

There were surprisingly 0 casulties

7

What was the rating on the VEI of this volcanic eruption?

It was rated 4 on the VEI.

8

Further information on EYJAFALLAJOKULL?

- Rapidly vapourising water increased the VEI.
- Rapid lava cooling created a cloud of highly abrasive glass-rich ash.
- It also coincided with an unusual stable jet stream position.

9

What were the economic impacts of the EYJAFALLAJOKULL volcano?

The European economy lost $5bn
The African economy lost as much as $65m
The loss for airlines totalled $1.1bn
Many knock on effect e.g. Moto GP.

10

Why would globalisation increased impacts?

Global financial systems are interlinked so therefore major disasters affect insurance companies in several countries. With people in emerging countries such as Chile even having insurance.