Antarctica - Antarctic

Antarctica is divided in two by the Transantarctic Mountains close to the neck between the Ross Sea and the Weddell Sea. The portion west of the Weddell Sea and east of the Ross Sea is called Western Antarctica and the remainder Eastern Antarctica, because they roughly correspond to the Western and Eastern Hemispheres relative to the Greenwich meridian.About 98% of Antarctica is covered by the Antarctic ice sheet, a sheet of ice averaging at least 1.6 kilometers (1.0 mi) thick. The continent has about 90% of the world's ice (and thereby about 70% of the world's fresh water). If all of th

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Discussion on Antarctica

Peter :

1. Is Antarctica laying on the Ocean floor or is it just floating? 2. Is Antarctica currently melting? 3. Will Antarctica eventually completley melt? 4. According to scientists, if all of Antarctica melted, the Ocean would approximately rise 200 feet, would this affect the rest of the world? 5. Do people live on Antarctica? Sorry for so much questions...but thanks to those who answer!

alishaface. :
"1. Is Antarctica laying on the Ocean floor or is it just floating? Antarctica is considered an island therefore it is floating. Technically no countries lay on the ocean floor. We are all floating. 2. Is Antarctica currently melting? Sure is.. Because Antarctica sits directly under the hole in the o-zone layer. Global warming effects are greater in Antarctica. It is at a very slow rate but yes it is melting. 3. Will Antarctica eventually completely melt? For Antarctica to completely melt would be impossible in our time. If we do not control global warming. Yes at one point it may completely melt. But I'm pretty sure we would have controlled green house gases by that time :) 4. According to scientists, if all of Antarctica melted, the Ocean would approximately rise 200 feet, would this affect the rest of the world? Yes most definitely! Especially small islands in the southern hemisphere such as New Caledonia. Although the effects would be felt worldwide. Small islands have already noticed higher than normal tides. 5. Do people live on Antarctica? Antarctica doesn't have any permanent residents but many countries has scientists positioned on Antarctica for most the year. There was actually a baby born in Antarctica!! I hope I helped. - alisha xx."
Rain :
"1. clouds float 2. somewher n da wrld, ice cream is melting 3. ice cream will 4. i affected my life by eating 5. i live on a tree"
nichole f :
"We are not all floating on the ocean. Islands don't float on water either. You can see how the Hawaii Islands have moved, but that has to do with plate tectonics, if they were floating on water they'd be all over the place. I believe the question is asking if it is just ice. One of the poles has no land mass under it and is just ice the other does have land mass. I won't give you the answer, but that should help you do the research yourself. Also, melting has increased whereas the hole in the ozone has gotten smaller. So I wouldn't say that's the cause on your homework either. Below are a couple articles to get you started."
thorian :
"Antarctica is a continent. It is not an island and it is not floating. It is not laying on the ocean floor. It rests on the mantle like the rest of Earth's continents. Antarctica can not melt unless a giant asteroid hits us or some other catastrophic event takes place. It's a continent. Glaciers on Antarctica can melt and calve off. Currently they are. Surely at some point Antarctica will be ice free. The majority of the Earth has been ice free for most of it's life, including Antarctica. We have been lucky enough to enjoy some cooler weather for a while but it's not the norm. "According to scientists" these days does not mean much. The information age sound bite generation takes these words as gospel. In this case there is enough ice on the continent that is not already displacing it's own weight like the arctic is. So theoretically yes sea level could rise that much but that would take a long time to melt that much ice. If that melts so does Greenland and the climate is warm enough for the water in the ocean to expand from heat. The Earth has moderators for this condition, lots of thick vegetation to trap water and create rainclouds. If humans are still around and we let these forests grow we'll be alright. Always remember that trees are the key to life as we know it. People are always on Antarctica but there aren't permanent residents yet."
*SnowQueen* :
"1. NO continents float, rock and soil is more dense then water and thus can not float on it. It is on continental crust, which is different from oceanic crust. 2. I believe it is not melting at a high rate as of now 3. It may, In the Mesozoic era (250-65 Mya) as a result of continued warming, the polar ice caps melted and much of Gondwana became a desert. In East Antarctica, the seed fern became established, and large amounts of sandstone and shale were laid down at this time. The Antarctic Peninsula began to form during the Jurassic period (206-146 Mya), and islands gradually rose out of the ocean. Ginkgo trees and cycads were plentiful during this period, as were reptiles such as Lystrosaurus. In West Antarctica, coniferous forests dominated through the entire Cretaceous period (146-65 Mya), though Southern beech began to take over at the end of this period. Ammonites were common in the seas around Antarctica, and dinosaurs were also present, though only two Antarctic dinosaur species (Cryolophosaurus, from the Hanson Formation, and Antarctopelta) have been described to date. It was during this period that Gondwana began to break up. 4.It would only affet coastal cities and Islands as most of the inner continents are much higher then sea level. 5. Only scientist, but no people have been a natural habitant of Antarctica ***"
lucy j :

1. What words would help explain Antarctica as a land of exremes? 2. Do you think Antarctica is the last wilderness? WHY OR WHY NOT? 3. What are 'katabatic' winds and how are they induced? 4. What are two key elements that regulate the ecosystems of Antarctica? don't want one words answers. Thnx!!!!!

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lawwwa_bug :

For my geography homework, we have been allocated groups and in our groups we have been given a certain topic to do with Antarctica (so the one you get allocated you support and others you disagree with). My group has been allocated to support the WWF (world wildlife foundation) so we are green peace! The other groups are 1)Mining, 2)Fishing, 3)Scientists, 4)Conservationists, I need to think of Killer questions to these groups to make them get caught out. For example I could have 3) Scientists- why do you need to do scientific research down there? Have you got any ideas?

Wayner :
"I would recommend visiting the websites of the major groups that do work down there. The sites for the US Antarctic Program, Antarctica New Zealand, the Scott Polar Research Institute, the Byrd Polar Research Institute, and the British Antarctic Survey are below. I've also included some links to info about the Antarctic Treaty, which bans much economic development of the continent currently. Greenpeace also has information on the Antarctic and what they do or have done down there (see the link below). And the link for the World Wildlife Fund is there as well (they are NOT the same organization btw)."
Jim :
"WWF is not aligned with Greenpeace. Greenpeace violates the laws of the high seas. Your question to scientist needs to be refined. It is way too broad. Narrow it down. I don't understand why if you are in geography class are you dealing with biological issues. Stick to geography. Land forms, ice bergs, glaciers, mountains, etc etc"

 

Comments on Antarctica

Dark12
Date: 2008-02-03 13:44:50

Ice cores from Greenland and Antarctica show that Earth warmed faster in the 20th century than at any other time in the past 22 millennia, researchers said. Climatologists from Bern University said their study also showed that concentrations of greenhouse gases are increasing at a faster rate, Swissinfo.com reported.


asianpickup
Date: 2008-02-03 13:44:50

Democratic presidential candidate Hillary Rodham Clinton has sent her husband, former President Bill Clinton, on a “special campaign trip” to Antarctica that could last “six or seven months,” Clinton aides confirmed today.


BlogSalesman
Date: 2008-02-03 13:44:50

By Alister Doyle, Environment Correspondent TROLL STATION, Antarctica (Reuters) - A deep freeze holding 90 percent of the world's ice, Antarctica is one of the biggest puzzles in the debate on global warming with risks that any thaw could raise...


Battleweb
Date: 2008-02-03 13:44:50

By Alister Doyle, Environment Correspondent TROLL STATION, Antarctica (Reuters) - A deep freeze holding 90 percent of the world's ice, Antarctica is one of the biggest puzzles in debate on global warming with risks that any thaw could raise sea...




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