This was a sign that hot magma was pushing up against the surface, stretching and bulging the land above. Thousands of roofs collapsed under the weight of ash made wet by heavy rains. Global cooling caused by ash in the atmosphere of 0. Back to Main Page. What they actually did. It then resurfaces due to density changes between magma and rock and so it pushes out through small cracks and explod es out through the volcano.

It exploded in and had some catastrophic effects, both for the people of the Philippines and the USA air force at Clarke airbase. Resettlement camps were used to care for the people displaced. The United States Geological Service helped to predict the disaster. Although much equipment was successfully protected, structures on the two largest U. There was 10 cm of ash covering an area of square kilometers square miles. A blanket of volcanic ash sand- and silt-size grains of volcanic minerals and glass and larger pumice lapilli frothy pebbles blanketed the countryside.

All of these massive impacts caused the team to completely evacuate the Clark Air Base. Fast flowing volcanic mudflows lahars cause sever river bank erosion, undercut bridges etc.

The United States experienced its third coldest and third wettest summer in 77 years during Had the typhoon not been present, the death toll would have been lower. You are commenting using your Twitter account.

Mount Pinatubo – the impacts of

The impacts of the eruption continue to this day. It is located at the plate boundary between to the Eurasian and Philippine Plate.

It then resurfaces as the density of the molten magma becomes lower than that of the rock, and so it pushes it up through the small cracks and explodes out through a volcano.


Although much equipment was successfully protected, buildings on two U. Very few locals knew that Pinatubo was a volcano due to its dormancy for yearsbut thankfully, explosions were reported by the Philippine Institute of Volcanology and Seismology PHIVOLCS who conducted an aerial survey around the volcano which was partly inhabited by the indigenous Aeta People to find 3 explosion craters and columns of steam.

This sgudy as a huge amount of pressure on the scientists and volcanologists, who had to considerpeople living nearby the volcano.

mt pinatubo case study gcse

It is also the largest eruption to affect a densely populated area. Facts about the Philippines: View all posts by Geography Wizard. Mount Pinatubo had been dormant for around years. It is also nested in the central part of the Zambales Mountain Range, which lies approximately 55 miles North West of the capital city Manilla in a complex of lava domes. Volcanic ash is blown in all directions over hundreds of KMs, smothering fields and buildings.

mt pinatubo case study gcse

The extrusion of a lava dome on June 7 led to the issuance of a Level 5 alert on June 9, indicating an eruption in progress. This site uses cookies.

It then resurfaces due to density changes between magma and rock and so it pushes out through small cracks and explod es out through the volcano. This volcano has experienced major eruptions approximately, and years before present B. Fill in your details below or click an icon to log in: Resettlement camps were used to care for the people displaced.

Case Study 4 – Composite Volcano – Mount Pinatubo

After observation of the surrounding area, the team noticed heavily eroded ash and rock deposits that had extended from the volcano for miles on all sides, which was an indication that previous volcanic eruptions were large, which could mean a similar fate for the eruption brewing in Pinatubo.


This team contained Rick Hoblitt and Dave Harlow. Damage following the Mount Pinatubo eruption was usually caused by lahars — rain-induced torrents of volcanic debris that killed people and animals and buried homes in the months after pinatub eruption.

Watch the Sulphur Dioxide cloud disperse on this movie. Pinatubo is not expected to erupt again for hundreds of years, assuming it keeps to its usual schedule.

mt pinatubo case study gcse

Prior toPinatubo was a relatively unknown volcano, yet the Pinatubo eruption on June 15 th was the second largest volcanic eruption of the 20 th Century-second in size only to the Katmai eruption in Alaska. Research this excellent website. Click here for full screen version. Electricity went off, water was contaminated, road links were destroyed, and telephone links were cut.

Evacuation camps and Government shelters were built for those displaced. The aerosol cloud spread around the earth in two weeks and covered the planet within a year.

Blanket of ash at least a half-inch 1 centimeter thick coated 4, square miles 7, square km of the island of Luzon. An evacuation area 20 kilometers