• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Volcanic Case Studies

Extracts from this document...

Introduction

Volcanic Case Studies Introduction Globally the risk of death or injury due to volcanic hazards are very small. However volcanoes attract disproportionate interest and are the first hazard to be considered in detail for this module. Current population trends and economic necessity mean that an increasing number of people live close to volcanoes. The flanks of volcanically active mountains are often densely settled due to their fertile volcanic soil which is rich in potassium. This is particularly the case in the tropics where soil fertility declines quickly as intense rainfall causes leaching. For some nations, notably island states, volcanic soils are the only rich soils available. For example in Indonesia population densities are positively correlated with maps of volcanic activity. As with all hazards there are natural and human components to their occurrence and aftermath. It is the interaction between society, technology and natural processes that this course module seeks to explore. ...read more.

Middle

Pinatubo Resources Bishop p 81-83 and 30-35 Nagle p 27-28 World map of country locations * http://www.geo.mtu.edu/volcanoes/pinatubo/ Do you want to know what a lahar looks like? Or what the eruption was like - this is a Pinatubo gallery * http://wrgis.wr.usgs.gov/fact-sheet/fs113-97/ USGS report on 1991 eruption and continuing hazards * http://wrgis.wr.usgs.gov/fact-sheet/fs115-97/ USGS on effects of monitoring and warning systems * http://wrgis.wr.usgs.gov/fact-sheet/fs114-97/ USGS report on the lahars in the 1991 eruption, their cause, their effects and continuing hazards http://pubs.usgs.gov/pinatubo/contents.html This is an amazing site of a book contents, it is for students with further interests, see for example the information on people in the town of Luzon * Denotes important information June 12 1991 explosion of Pinatubo volcano. Source: http://www.geo.mtu.edu/volcanoes/pinatubo/volcano/ Questions ? Describe the natural processes and tectonic situation that led to the eruption of Mount Pinatubo. ? Describe the type of eruption and volcanic hazards associated with the eruption of Mount Pinatubo. ? Apart from pyroclastic surges lahars present the greatest threat to human life. How were lahars created in the Pinatubo eruption? ...read more.

Conclusion

Goma, on the shore of L. Kivu, is normally a town of 500,000 people. Why do so many people risk living in such a vulnerable area? Have there been any attempts to mitigate the effects of eruptions? ? Describe the ways in which scientists were able to monitor the mountain and the actions that were the results of this monitoring. Do you think that these were effective? ? Describe the long-term effects of the volcanic hazards resulting from the 2002 eruption and the continued vulnerability of the local populations. For both volcanoes: Lloyd Timberlake, who has written widely on environmental hazards asserts that, "Volcanic eruptions are not 'serious' disasters in terms of numbers of people killed or even affected." Write an essay discussing this statement with reference to the impacts of the Pinatubo eruption and the eruption of Nyiragongo. You may support your conclusion by reference to other volcanic eruptions that you know about. Later in the course you will be able to compare the impacts of other hazards. At this stage, your essay should concentrate on whether the eruptions were 'serious' for the communities and environments affected by these two volcanoes. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Hazardous Environments section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Hazardous Environments essays

  1. Marked by a teacher

    The number of fatalities that result from volcanic and seismic natural hazards is related ...

    4 star(s)

    Sichuan has a population of 80,418,200 and a population density of 180 /km2. Sichuan is a largely rural area, but has 5 main cities. This earthquake resulted in a death toll of 70000 by June 2008. The shaking of the ground in the area around the epicentre was intense and resulted in 1.5km of surface faulting near Quingchuan.

  2. A Report Of The Investigation into Health and Safety In The Workplace

    * Treat for the casualty for shock. Chemical burns are caused by acids, alkaline or other chemicals coming in contact with the skin. They are not usually caused by heat the burn is a result of the chemical destroying body tissues. You need to: * Thoroughly wash the area with large amounts of water, for example, under a running tap or shower.

  1. comparing shrewsbury an old town an telfrd a purpose build new town

    For Cleanliness of town both Dean Square and Sherwood Square scored a 5 and so an average of 5. For positioning of car parks Dean Square scored 3 and Sherwood Square scored 4 giving an average of 3.5. Overall for these factors Shrewsbury scored the highest for Accessibility and Telford

  2. Cold Environments

    higher than the annual precipitation figures of continental ET locations such as Ruskoye Ust'ye in Siberia. Data from Nuuk shows that annual precipitation is 598mm, which is a generally high recording for ET climate types. In continental locations of ET climate areas, the low precipitation feature is more prevalent.

  1. Assess The View That Hazardous Events Have More Short- Term Than Long-Term Impacts On ...

    This was a short term impact as the population decreased quickly. Over 200 homes were destroyed by mud flows, falling ash and debris, and smoke damage. Another short term effect of the Mount St. Helens eruption is that power supplies were cut off and that ash got into water supplies.

  2. What are the variations in the effects and responses to volcanic activity between LEDCs ...

    As a result of the eruption, the mountain's elevation was decreased from 2,950 m (9,677 ft) to 2,549 m (8,364 ft). Forest Interpreters often talk about the five main phases of the eruption. The earthquake triggered the first phase, which jarred loose the bulging north flank of the mountain.

  1. Tectonic Processes.

    Damage caused by surface waves varies. For example, the Mexico City quake of 1985. Its impact was increased four fold as the city is built on ancient lake sediments. Secondary hazards Soil liquefaction: Solid material changed into a liquid state.

  2. Volcanic and seismic events are major pieces of evidence towards proving that plate-tectonics theory ...

    What is the Curie point and why is it important? When magma cools, the magnetic iron-bearing minerals align themselves with Earth’s magnetic ï¬eld, recording both its direction and its strength. The temperature at which iron-bearing minerals gain their magnetization is called the Curie point.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work