VOLCANO CASE STUDY BBC BITESIZE

Ejecta – a supervolcano will eject at least 1,km3 of material compared to 1km3 of a normal volcano. If a supervolcano was to erupt there would be a global catastrophe. Covers a wide area. Impacts The towns of Chaiten and Futaleufu were evacuated. Many homes and buildings have been destroyed, including the only hospital, the airport and many roads. It is tectonically active with earthquakes and occasional volcanic eruptions.

Mauna Loa is a shield volcano. In March there were first signs that the volcano would erupt. The large volume of material from the last Yellowstone eruption caused the ground to collapse, creating a depression called a caldera. Once Chances Peak had woken up it then remained active for five years. The eruption was violent, producing lava, ash, pyroclastic flows and minor earthquakes.

Shield volcanoes have the volccano characteristics: Mauna Loa is a shield volcano. New people moved into the area bringing the disease with them. Most of these people are poor farmers who depend on the richness of the soil for their living. Why did cholera spread following the eruption of the Nyamuragira volcano? Impacts The towns of Chaiten and Futaleufu were evacuated.

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volcano case study bbc bitesize

The small population of the island 11, people was evacuated in to the north of Montserrat as well as to neighbouring islands and the UK. What are the characteristics of a shield volcano? The eruption was violent, producing bitesze, ash, pyroclastic flows and minor earthquakes. The next eruption is predicted to have catastrophic worldwide effects.

Powerful volcanic eruptions

Volcanic activity has calmed down in recent years and people have begun to return to the island. Both towns were coated in ash, as were local farms. Some of this will cause massive lahar flows. What are the characteristics of a composite volcano? European businesses lost trade.

This could include a 25 mile high ash cloud. As it rained more than usual. The capital, Plymouth, has been covered in layers of ash and mud.

In March there were first signs that the volcano would erupt. If a supervolcano was to erupt there would be a global catastrophe.

volcano case study bbc bitesize

The most intense eruptions occurred in Food supply – Crops and food supplies would suffer hugely and prices would increase dramatically. In Volcanl the volcano erupted after being dormant for 9, years. Composite volcanoes are found on destructive plate marginswhere the oceanic crust sinks beneath the continental crust. Ejecta – a supervolcano will eject at least 1,km3 of material compared to 1km3 biteize a normal volcano.

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It happened beneath an ice sheet.

Volcanoes – Eduqas – Revision 6 – GCSE Geography – BBC Bitesize

Lahars a destructive volcanic landslide or mudflow would devastate whole communities. Rivers channels became blocked too causing flooding. Old Faithful is one example of a geyser. Many homes and buildings have been destroyed, including the only hospital, the airport and many roads.

It happened underneath the sea. The supervolcano at Yellowstone is formed because of a volcanic hotspot. Layers of ash and lava. Ash cloud from Mount Merapi eruption.

volcano case study bbc bitesize

Crops would be destroyed due to ash fall and animals would die due to respiratory problems and starvation.