LEDC VOLCANO CASE STUDY A LEVEL

The eruption was violent, producing lava, ash, pyroclastic flows and minor earthquakes. View Chaiten Case study in a larger map. S Little infrastructure left untouched in the South to help provide emergency access for people. As the plate descends it causes earthquakes in the Benioff zone, and volcanoes occur here because of melting of the plate in the asthenosphere. It measures 16km long and 11 km wide. Thus, it can be argued that prediction, preparation and prevention of this hazard were poor. Montserrat a British Overseas territory is a small island in the Caribbean.

This volcano has a history of eruptions but in human terms it is infrequent. The ash cloud could be seen from space and the volcano increased in size greatly due to lava deposition. Airports in Chile, Argentina and Uruguay, up to 2, km from the volcano, were forced to close or cancel flights. In addition, volcanic ash from the eruption clouds caused ground transportation and health problems in Chile and Argentina. The nature of the hazard type, magnitude, frequency This volcano has a history of eruptions but in human terms it is infrequent. View Chaiten Case study in a larger map. EC S People flocked to the North, shelters became overcrowded.

Smaller communities to the southeast such as Chubut and Rio Negro also received heavy ash falls. The ash cloud could be seen from space and leveo volcano increased in size greatly due to lava deposition.

LEDC volcano case study – Revision Notes in A Level and IB Geography

By late May the lava eruptions had created a new dome of ,m 2 containing 55million m 3 of material. Both towns were coated in ash, as were local farms.

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In the volcano began to give off warning signs of an eruption small earthquakes and eruptions of dust and ash. Volcanic mud flows called lahars blocked roads making local people even more isolated than usual.

Volcanic eruptions and lahars have destroyed large areas of Montserrat. It’s split into 3 sections: Many homes and buildings have been destroyed, including the only hospital, the airport and many roads.

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A risk map was created and is continually updated. Production of associated hazards from volcanoes.

The dome collapsed resulting in 5 million cubic metres of ash and dust pyroclastic flows in several directions enveloping the surrounding area. People felt it wasn’t enough which caused riots International Red cross provided water, food and shelter. The graphic shows the progress of the eruption and its impact on the island.

LEDC Volcano Case Study: Montserrat

Following this Chances Peak remained active syudy five years. EC S D houses completely destroyed. It measures 16km long and 11 km wide. These are the causes of this volcano, which is explosive because the lava is Rhyolitic, has high gas pressure and high Silica content.

At this margin, clearly marked on the map and cross section opposite, there is oceanic to continental convergence. Volcanic activity has calmed down in recent leevel and people have begun to return to the studyy. Volcanic bombs were hurled. Source Click here for cleaner image. S 19 people died, primarily people who lived near the volcano. The capital, Plymouth, has been covered in layers of ash and mud. The impact of the event social, economic, environmentalin the short and longer term.

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Volcano Case Studies (MEDC AND LEDC)

This area of Chile has reasonably low population density, so limits the potential impacts on the local scale. Chile only has 20 volcanoes with completed geological studies, 7 which have had hazard assessments and 7 more that are monitored. The capital, Plymouth, has been covered in layers of ash and mud. In this southern part of the subduction zone the oceanic plate dips at a steep angle, while the northern end may be experiencing flat-slab subduction in which the oceanic slab slides beneath the continental plate at a very low angle.

However, Chile is vulnerable to earthquake and volcanic events because of its tectonic setting at a subduction zone. The Chilean Navy had managed to evacuate people initially and emergency measures included the following: The ash cloud was up to 17 kilometers high and was visible on satellite images for hundreds of kilometers over the Atlantic.

ledc volcano case study a level

It started with warning signs of small earthquakes and eruptions of dust and ash. Montserrat Background British colony in the Caribbean.

Chaiten Eruption- LEDC

Local An exclusion zone was set up around the volcano. Human factors affecting etudy and vulnerability – Volcanoes. The town of Futaleufu, with about 1, residents, was also evacuated.