Notices
Results 1 to 17 of 17

Thread: Why ice layer of antartica is thicker than sea ice of Arctic

  1. #1 Why ice layer of antartica is thicker than sea ice of Arctic 
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    Many people say:
    South Pole is colder than north pole.This is becuase south pole is located in the highest land in the world-Antartica.
    But...Antartica is the highest land because it has a thick layer of ice,about 2km.I think....why the thick layer ice cannot form on Arctic Ocean?The sea water has higher specific heat than water...so the temperature of north pole is A LITTLE warmer than south pole.
    just a little warmer..but this is a big difference between the thickness of ice layer in North pole and South pole!
    Who can explain to me><
    Let us discuss and find out this answer!!!


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    :-D
    just give me the suggestion and discuss about this..
    i think this is becuase:
    The sea water at top can freeze only..
    but..how the ice in Antartica freeze?There are a little water at there only..


    Reply With Quote  
     

  4. #3  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,168
    Land in the south. Snow accumulates, nowhere for it to go.
    Water in the north. Ice can move away from the pole to warmer waters where it melts. No accumulation.

    Please try to start thinking these things through.
    Reply With Quote  
     

  5. #4  
    Geo
    Geo is offline
    Forum Junior
    Join Date
    Nov 2009
    Location
    New Zealand
    Posts
    273
    From Wikipedia.

    Antarctica is colder than the Arctic for two reasons. First, much of the continent is more than 3 kilometres (2 mi) above sea level, and temperature decreases with elevation. Second, the Arctic Ocean covers the north polar zone: the ocean's relative warmth is transferred through the icepack and prevents temperatures in the Arctic regions from reaching the extremes typical of the land surface of Antarctica.

    how the ice in Antartica freeze?There are a little water at there only
    Since about 15 Ma, the continent has been mostly covered with ice, with the Antarctic ice cap reaching its present extension around 6 Ma.
    Reply With Quote  
     

  6. #5  
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    Quote Originally Posted by Ophiolite
    Land in the south. Snow accumulates, nowhere for it to go.
    Water in the north. Ice can move away from the pole to warmer waters where it melts. No accumulation.

    Please try to start thinking these things through.
    Snow accumulate..and form ice?Much snow will become ice????It is so strange....How the ice form in Antartica?
    Reply With Quote  
     

  7. #6  
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    I have know!The snow become ice:
    a)The high pressure cause snow become ice...
    b)The snow melt and refreeze to become ice
    i think this both method can cause the snow become ice..i want to confirm..the two method can be accepted...my country has no snow..
    Reply With Quote  
     

  8. #7 Come here now!!!!About Sea ice's thickness... 
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    1)one-year sea ice in the pole will melt in the summer.
    2)one-year sea ice in the pole will float to warmer air and melt.
    Which is true?Or both true?
    I think...the first one is correct..i am not sure..

    secondly,
    why multi-sea ice(several meter) cannot be thick like the ice in the antartica(several km)?
    In the antartica,the snow accumulate and become ice.After many year,the ice become very thick.But,why the multi-year sea ice cannot be thick like the ice in the antartica?The snow also can accumulate on the surface of multi-year sea ice and become thick..why?
    Reply With Quote  
     

  9. #8  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,168
    As to your second question - what's the main difference between the Arctic and the Antarctic? do you think that might be responsible for the observations?
    Reply With Quote  
     

  10. #9  
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    Arctic is a sea that surrounded by land.
    Insteadly,Antartica is a land that surrounded by sea.
    but,what is the effect on?
    Reply With Quote  
     

  11. #10  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,168
    Ice on water can be more easily melted than ice on land. Ice on water can move long distances easily. Together this means that it is difficult for ice to accumulate in the Arctic, but easy for it to do so in the Antarctic.
    Reply With Quote  
     

  12. #11  
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,416
    Once the Arctic freezes over, Arctic storms are largely cut off from moisture resulting in lower snowfalls over the ice.

    The Ocean surrounding the Antarctic never freezes and continues to serve as a source of moisture for storms that carry moisture (aka snow) well inland from the sea edge.
    Meteorologist/Naturalist & Retired Soldier
    “The Holy Land is everywhere” Black Elk
    Reply With Quote  
     

  13. #12 Challenge scientist!!!About south pole and north pole 
    Forum Sophomore
    Join Date
    Jun 2009
    Posts
    119
    south pole is colder than north pole because:
    it is located in the highest continent in the world,antarctica.
    but its elevation is caused by the thick ice.
    How thick ice form?
    the snow fall and does not melt....accumulate and form thick ice.
    Before thick ice form,both pole are not affect by elevation....
    but why this situation does not occur in north pole?
    Reply With Quote  
     

  14. #13 Re: Challenge scientist!!!About south pole and north pole 
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,416
    Quote Originally Posted by ~James~
    Before thick ice form,both pole are not affect by elevation....
    but why this situation does not occur in north pole?
    Actually if you look at the elevation of the bedrock beneath the ice it's still pretty high, much of it 2500-5000 feet with ranges that are higher. The ice has probably weighted much of it down by several hundred feet as well. Due to higher elevation it would have been at least 10-25 F cooler even before the ice cap.

    Meteorologist/Naturalist & Retired Soldier
    “The Holy Land is everywhere” Black Elk
    Reply With Quote  
     

  15. #14  
    New Member
    Join Date
    Jul 2011
    Posts
    1
    Hello. I extracted this piece of ice a while ago and was wondering if any of you can tell me how old it is: http://i97.photobucket.com/albums/l2...0726091551.jpg
    In case of AI rebellion: Know your paradoxes.
    Shout:

    "Does a set of all contain it's self?"

    "This statement is false!"

    "I've got good news and bad news. The good news is there is no bad news. The bad news is there is no good news."
    Reply With Quote  
     

  16. #15  
    Comet Dust Collector Moderator
    Join Date
    Mar 2011
    Location
    New Jersey, USA
    Posts
    2,848
    No, not without knowing where and when it was taken, and the precipitation history of the area.

    On first guess, it looks like a season's worth of snowfall, but that's just a WAG.

    Weather Wayne
    Reply With Quote  
     

  17. #16  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,168
    Probably Holocene. :wink:
    Reply With Quote  
     

  18. #17  
    Comet Dust Collector Moderator
    Join Date
    Mar 2011
    Location
    New Jersey, USA
    Posts
    2,848
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •