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

To what extent is the impact of an earthquake related to its strength. (30) (OCR A2)

Extracts from this document...

Introduction

Transfer-Encoding: chunked ´╗┐To what extent is the impact of an earthquake related to its strength. An earthquake is a sudden release of tension between two plate margins, which had a built-up seismic pressure. When two crusts are deformed/displaced due to plate crustal movement in a result of convection currents, tremor can be caused. Earthquakes occur at all plate margins as well as intra-plate locations such as old relic fault lines. The most destructive earthquakes are related to destructive or strike-slip fault. The magnitude/strength can be measured by the Richter scale, which is a numerical scale which is calculated using a seismograph, this scale is logarithmic. The impact caused by an earthquake can be related to physical or human factors. The location of the epicentre is a physical variable which could be considered. If the location of the epicentre is closer to the Earth?s surface the tremor will be more concentrated; therefore, a greater amount of vibration may cause more destruction. A comparison which supports this variable is between Haiti and Chile. Chile?s earthquake was 8.8 in magnitude however the epicentre was 35 km deep. ...read more.

Middle

If the country is and MEDC/NIC the country will have a greater amount of GDP or windfall profit which can be used on these three factors. An example of a NIC is Chile the GDP per capita is $15,000. Chile is also well known for the world?s largest copper producer. As their more developed country and Chile is a quake-prone area preparedness was high, this is because they have the income to spend on close monitoring and aseismic buildings. As Chile has a well-structured government they have strict planning policies, building codes require shake resistant construction and rapid emergency response systems, therefore, reducing the risk of destruction, due to intense vibrations. After the earthquake and the twit on 27th February, the country was able to use the $16 billion windfall profits of the copper industry, which is nationalised, to recover and provide immediate response to the locations in distress. This also means the money was used to rebuild roads, bridges, ports and the 1.5 million homes affected; this meant economic loss was minimised. So, this shows that MEDCs have the ability to minimalize impact which could be related to physical factors including strength. ...read more.

Conclusion

All these factors play a balanced role on the effects of an earthquake. However, an earthquake with a magnitude less than 5.5 could be considered non-detrimental therefore discarding other factors. And in contrast that, an earthquake with an extreme magnitude could be considered detrimental and be the most significant factor to the impact. Secondly, the impact is also related human factors and how well we can manage the environment to prepare for such events. As shown above, the Park model can show the level of the economy and how the time and economy can recover. The dashed line shows and MEDC?s/NIC such as Chile and the filled line show an LEDC such as Haiti. We can see that it takes a longer time for the economy to recover in LEDC due to the factors I?ve identified in the previous paragraphs. If the country is not in the situation to prepare itself, physical factors can be amplified therefore creating a greater impact. The location of the epicentre concerning urban and rural areas is also factors that can supplement physical factors increasing the impact of an earthquake, if in an urban area. However, strength is still the primary factor that at a certain magnitude other human and physical factors come into play. ...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. Suggest why droughts have severe impacts on people and the environment.

    Drought also affects the health and well being of the people in the affected area. The main issue on wellbeing is the overall health of the people, as they are receiving even less than the small amounts of nutrients they would normally, also due to contamination of food, mainly meat, and sewage disposal.

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

    Overall Accessibility is better in Shrewsbury. Position of main shops, Cleanliness of town and Variety of leisure facilities are better in Telford. Historic building is better Shrewsbury. The positioning of car parks, Appearance of shopping area and Variety of shops are better in Telford and Quality of open space and amount of open space are better in Shrewsbury.

  1. The focus of this paper will be the Queen Charlotte Islands earthquake of 1949.

    in a region to estimate when and where future earthquakes may occur. Secondly, seismologists use a geophysical method of study where they use observations and interpretations of changes in geometrical, metrical, thermal and chemical aspects of the earth's behaviour to indicate an approaching earthquake in an area (Tatsch).

  2. Discuss the physical and human factors which effect the location and the impact of ...

    The city of San Francisco located above the San Andreas Fault is one of the most earthquake prone cities in the world and receives small earthquakes everyday. The location of the focus is also very decisive when considering the impact that the earthquake might yield, if the focus is located

  1. Earthquakes - the diverse variety of physical (geological and geographic) and human (economic, political ...

    Distribution of population can significantly vary the impact of an earthquake - rapid urbanisation in 'ring of fire' regions due to industrial development / scientific advancement is making the potential problems worse, with Tokyo, one of the largest cities out of all MEDCs, being one of the most vulnerable.

  2. The origin of the Earth

    In 1912 a German Scientist called Alfred Wagener proposed that these two continents were once joined together then somehow drifted apart. He proposed that all the continents were once stuck together as one big land mass called Pangea. He believed that Pangea was intact until about 200 million years ago.

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