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Final research

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by

Emily Riniker

on 4 May 2010

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Transcript of Final research

Does the change in tempature affect the occurance of earthquakes? By: Emily Riniker and Valerie Gibbs What is an earthquake? Earthquakes are the earth's way of naturally relieving stress. When the earth's plates move against eachother,
it puts stress on the lithosphere. The lithosphere is the outer solid part of the earth's crust. So when the stress is great enough, the lithospere breaks or shifts, causing an earthquake. How Do You Measure Earthquakes? Magnitude- depends on wave amplitude and distance Earthquakes are also measure by the amount of destruction they cause above the ground and on the
human population. Two ways to measure: There are three types of earthquakes. Volcanic These types of earthquakes
occur in conjunction with volcanic activity. Tectonic These occur when the rocks
in the earth's crust break due to
geological forces created by tectonic plates. Collapse Small earthquakes in underground
caverns, and mines. Are earthquakes really on the rise? Earthquakes of magnitude 7.0 or greater
have remained fairly constant.
It seems like there have been more earthquakes because
we have more technology to detect all earthquakes from
the littlest to the biggest. Global Warming
Causes Earthquakes? Melting ice sheets move in a stick-slip pattern and are being pushed together which accumulates pressure that exerts on the earth's surface causing glacial earthquakes up to a 7.0 magnitude. The USGS has been monitoring the mass balance of three glaciers
in the Pacific Northwest and in Alaska for nearly 50 years.
According to our data and research findings, there is a relationship between temperature and earthquakes due to melting glaciers that affect surface tempature of the earth. Rising temperatures are melting the ice which
is exerting force on the earth. Sources
http://www.usgs.gov/
http://scign.jpl.nasa.gov/learn/index.htm
http://www.celsias.com/article/global-warming-causes-massive-earthquakes/
http://www.livescience.com/environment/070830_gw_quakes.html
www.wikipedia.com



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