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Tectonic Plates and Natural Disasters!

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by

Liam Fothergill

on 21 June 2013

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Transcript of Tectonic Plates and Natural Disasters!

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli
Tectonic Plates and Natural Disasters!
2011 Christchurch Earthquake!

What is a natural disaster?
A natural disaster is a major event caused from a natural processes of the Earth, some examples include floods, volcanic eruptions, earthquakes and tsunamis. In most cases natural disasters can not possible be stopped by humans.
Tectonic Plates!
Convergent Boundary!
In tectonic plates, a convergent boundary, also known as a destructive plate boundary, is a region where two tectonic plates move toward one another and collide. As a result of pressure, and friction, earthquakes and volcanoes are common near convergent boundaries.
2011 Christchurch Earthquake!
Affected area!
In February 2011 a natural disaster severely damaged New Zealand's 2nd largest city. It killed approximately 185 people.
The magnitude 6.3 earthquake struck the Canterbury region in New Zealand's South Island at 12:51 pm on Tuesday, 22 February 2011. The earthquake caused widespread damage across Christchurch, especially in the central city and eastern suburbs.
The total cost to insurers of rebuilding was, by April 2013 $40 billion. Some economists have said it will take the New Zealand economy 50 to 100 years to completely recover. The earthquake was the most damaging earthquake affecting the Christchurch area. On 29 March 2011, John Key and Bob Parker announced the creation of the Canterbury Earthquake Recovery Authority, which would lead the earthquake recovery, cooperating with the government, local councils and residents.
Rebuilding!
Seafloor spreading was not apart in this earthquake!
Sea-floor spreading is the process in which two tectonic plates move apart. As the plates move apart, the rocks break and form a crack between the plates. While this is happening magma rises through the cracks and seeps out onto the ocean.
Bibliography!
http://en.wikipedia.org/wiki/Plate_tectonics
http://en.wikipedia.org/wiki/2011_Christchurch_earthquake
http://library.thinkquest.org/17457/platetectonics/4.php
http://science.nationalgeographic.com.au/science/earth/the-dynamic-earth/plate-tectonics-article/
By Liam Fothergill!
Full transcript