Monday, August 18, 2008

ReseArCh & Sketch & RefErence of assignment 2


The research that i have done on the melting of ice caps:
The area of global warming that i choose is the m
elting of ice caps. An ice cap is an ice mass that covers less than 50 000 km² of land area (usually covering a highland area). Masses of ice covering more than 50 000 km² are termed an ice sheet.Ice caps are not constrained by topographical features (i.e., they will lie over the top of mountains) but their dome is usually centered around the highest point of a massif. Ice flows away from this high point (the ice divide) towards the ice cap's periphery. Polar ice caps form because high-latitude regions receive less energy in the form of solar radiation from the sun than equatorial regions. This results in lower surface temperatures. Seasonal variations of the ice caps will take place due to varied solar energy absorption as the planet or moon revolves around the sun. Additionally, in geologic time scale, the ice caps may grow or shrink due to climate variation. See ice age, polar climate.Both of the Earth's ice caps are currently shrinking, possibly as a result of anthropogenic global warming.

The web links:
http://en.wikipedia.org/wiki/Ice_cap

http://www.thewildclassroom.com/biomes/icecaps.html
http://www.geocities.com/Yosemite/Rapids/4233/
ijsbergen.html


The Sketches:






The references and images that i used to create my work:

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