Friday, October 16, 2015

Antarctica's Landforms

                                                                     Antarctica's Landforms
                                                 Antarctica has many interesting landforms.
                                Some of these landforms are volcanoes, glaciers, seas, oceans, 
               mountains, ice caves, ice burgs, and Antarctica itself is a polar desert because it only receives 3 inches of rain or less in a whole year. I will focus on only two of these landforms. However, just for a moment, I will focus on volcanoes in the polar desert. (Antarctica)

1). Mount Berlin-Highest elevation is 3,478 meters-Latest eruption was in 8350 B.C.E.
2). Deception Island- Highest elevation is 576 meters-Latest eruption was in 1970.
3). Mount Erebus-Highest elevation is 3,794 meters-Latest eruption was in 2015.
4). Penguin Island-Highest elevation is 180 meters-Latest eruption was in 1905.
5). Mount Takahe-Highest elevation is 3,460-Latest eruption was in 5550.
If you watch the video above, you will learn about a newly discovered volcano in Antarctica.


Mount Berlin

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Deception Island

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Mount Erebus 

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Penguin Island


Mount Takahe

There are many glaciers in Antarctica, too. A few of them are outlet glaciers, valley glaciers, cirque glaciers, tidewater glaciers, and ice streams. If you look at the pictures below and their descriptions, you will learn something new about each of these types of glaciers. 


Above is a picture of an outlet glacier. One thing that make outlet glaciers stand out from others is that they are channels of ice that come out of an ice sheet, however they are "constrained" on their sides with visual bedrock.

 

Valley glaciers (above) are just narrow paths of ice that are between valley walls. As seen above, the part of the picture that looks like a road made out of "snow" is the valley glacier. 


Cirque glaciers are glaciers that form on the side of mountains. They are usually in a bowl shape, almost like the one above. They usually are just land from a part of the mountain that slowly gets covered with snow.

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Tidewater glaciers are simply just valley glaciers, however, they lead to the ocean.


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