Earthquakes Geography project Done by: DESHER TROTMAN Introduction Definition: An earthquake is a sudden tremor or movement of the earth’s crust‚ which originates naturally at or below the Earth’s surface. They can occur from fault lines where tectonic plates meet or from volcanic activity. Earthquakes are very common in areas of volcanic activity where they either proceed or accompany eruptions. Earthquakes caused by volcanic eruptions are rare since all volcanoes are not prone to violent
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“The extent to which tectonic processes represent hazards depends on when and where they are experienced.” Tectonic hazards are dangers caused by the movement of the earth’s plates. The majority of hazards represent by plate tectonic occur at plate margins where two plates meet. These natural processes become hazardous when they affect people and cause material losses such as the destruction of infrastructure as this inhibits sustainable development. These hazards can be reduced depending on when
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events are major pieces of evidence towards proving that plate tectonics theory is valid (40 marks) The theory of plate tectonics states that the Earth’s lithosphere (top layer of the Earth’s crust) is split up into rigid sections called plates that are moving relative to one another as they move on top of the underlying semi-molten mantle. These plates are either continental‚ The North American Plate‚ or oceanic‚ The Nazca Plate. Tectonic plates are powered by convection currents‚ which is the circular
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Alfred Wegner as part of his wider theory on plate tectonics. The plate tectonic theory suggested by Alfred Wegner in 1915 was that millions of years ago all the continents were joined together in one mass of land called ‘Pangaea’‚ the evidence for this was that coal was found on Antarctica‚ the shape of Africa and south America fit together and same fossils were found on different continents. This theory is used to explain the distribution of earthquakes‚ volcanoes and Fold Mountains‚ it states that
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2013 a calamity so unexpected and tragic struck the islands in Central Visayas. Recorded as the deadliest earthquake that struck the Philippines in 23 years‚ fear‚ anxiety and panic were felt all throughout the area. Houses collapsed‚ buildings got destroyed and churches had fallen. More crucially‚ lives had been taken. Currently‚ we’re still within weeks after the 7.2 magnitude earthquake‚ hit into the peaceful surfaces of Bohol and Cebu. The destruction brought about by the quake is heartbreaking—over
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Course Title IEQ-05 : Earthquake Geology and Geoinformatics (Dept. of Earthquake Engineering‚ IIT Roorkee) What is an earthquake? An earthquake is the vibration of the earth produced by the quick release of energy. Most often‚ earthquakes are caused by movement along large fractures in the earth’s crust. Such fractures are called faults. The energy that is released radiates in all directions from its origin in the form of waves. These waves are similar to the waves that occur when you drop a
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North American Plate at a rate of a few centimeters for each year. In the event that the development proceeds in light of current circumstances and course‚ in 10 million years‚ Los Angeles‚ presently at low scope‚ will have moved northward to the same scope as San Francisco. In 50 to 60 million years‚ Baja California and parts of California west of the San Andreas flaw will have turned out to be totally isolated from whatever is left of the North American Plate. As the Pacific Plate and the North
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COMPARING QUAKES! This exercise should allow you to compare the effects of quakes on countries at different levels of development and to then try and suggest reasons for any differences or similarities you find. | |MEDC – Kobe‚ Japan |LEDC – Kashmir‚ Pakistan | |Location |Kobe is located 32 kilometres west of Osaka on the |The epicentre is Muzzafarabad the capital of
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Christchurch Earthquake 2011 Case Study (New Zealand) On Tuesday 22 February 2011 at 12:51 p.m. Christchurch struck by a magnitude 6.3 earthquake‚ which killed 185 people and injured several thousand. The quake was centred 10km south-east of the city at a depth of 5km. In the ten minutes after it hit‚ there were 10 aftershocks of magnitude 4 or more. Also there was just a recent earthquake‚ which took place in September 2010. It was just as strong as the Haiti earthquake‚ at 7
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AN EARTHQUAKE IN AUSTRALIA Australia has a relatively low rate of seismicity due to its location towards the centre of the Indo-Australian Tectonic Plate. Earthquake activity is much higher around the margins of the Indo-Australian Plate‚ for example In places such as Indonesia‚ Papua New Guinea and New Zealand. Nevertheless‚ many historic earthquakes have Occurred in Australia and Geosciences Australia’s database (QUAKES) contains information on tens of thousands Of historic earthquakes in the
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