Tech & Science There's A Giant Hole In The Middle Of Antarctic Sea Ice The Recently Formed

01:40  12 october  2017
01:40  12 october  2017 Source:   International Business Times

Return of 'ocean chimney' the size of Tasmania puzzles Antarctic scientists

  Return of 'ocean chimney' the size of Tasmania puzzles Antarctic scientists A mysterious and rare hole the size of Tasmania has opened up in the Antarctic sea ice,Known as the Weddell Sea or Maud Rise Polynya, the ice-free zone appeared in September and has grown to as large as 80,000 square kilometres, according to the University of Toronto.

Researchers don't know why a huge hole formed in the middle of Antarctic sea ice . In the case of a polynya, water that is warmer than sea ice comes in contact with the ice , transfers some of its heat and consequently melts some of the ice .

The polynya is in the middle of the Weddell Sea . As sea ice forms , dense cold brine is ejected, sinking to the sea floor. Of that radiation, if antarctic sea ice is present at the average albedo of October sea ice down there , 443 watt-hours will be absorbed, and 1886 watt-hours will be reflected.

What to watch next
  • Body found on beach believed to be missing Melbourne mother

    Body found on beach believed to be missing Melbourne mother

    Seven News Logo
    Seven News
    0:26
  • Palaszczuk slams ‘smiling’ man who escaped court over murdered boy

    Palaszczuk slams ‘smiling’ man who escaped court over murdered boy

    9News.com.au Logo
    9News.com.au
    2:05
  • Four men arrested following armed robberies.

    Four men arrested following armed robberies.

    ABC News Logo
    ABC News
    1:51
  • Defence data hacked

    Defence data hacked

    ABC News Logo
    ABC News
    6:01
  • Lottoland offers to pay newsagents a cut of its takings

    Lottoland offers to pay newsagents a cut of its takings

    Seven News Logo
    Seven News
    1:24
  • Parents flock to small chemist selling ‘liquid gold’ colic medicine

    Parents flock to small chemist selling ‘liquid gold’ colic medicine

    9News.com.au Logo
    9News.com.au
    2:42
  • Mental health focus in Antarctica

    Mental health focus in Antarctica

    ABC News Logo
    ABC News
    1:36
  • Weinstein leaves US for sex addiction treatment

    Weinstein leaves US for sex addiction treatment

    Seven News Logo
    Seven News
    2:33
  • Police arrest four people in relation to Mosman stabbing

    Police arrest four people in relation to Mosman stabbing

    9News.com.au Logo
    9News.com.au
    1:23
  • Man escapes truck engulfed in flames on Hume Highway

    Man escapes truck engulfed in flames on Hume Highway

    9News.com.au Logo
    9News.com.au
    1:47
  • Does Nick Xenophon have the X factor?

    Does Nick Xenophon have the X factor?

    Seven News Logo
    Seven News
    1:34
  • Gold Coast council investigates spread of toxic chemical

    Gold Coast council investigates spread of toxic chemical

    Seven News Logo
    Seven News
    0:21
  • Meet the new pride and joy of Werribee Zoo

    Meet the new pride and joy of Werribee Zoo

    Seven News Logo
    Seven News
    1:38
  • Thief steals thousands of dollars through hacking emails

    Thief steals thousands of dollars through hacking emails

    Seven News Logo
    Seven News
    1:42
  • Wild weather batters South Australia

    Wild weather batters South Australia

    Seven News Logo
    Seven News
    1:06
  • Weinstein faces more claims of sexual harassment

    Weinstein faces more claims of sexual harassment

    9News.com.au Logo
    9News.com.au
    1:45
UP NEXT
UP NEXT

A large hole has opened up in the sea ice cover that sits around Antarctica, satellite images show. The hole that’s the size of the state of Maine has been there for about a month or so but researchers aren’t really sure where it came from or why it formed.

'Mysterious' hole appears in sea ice near Antarctica

  'Mysterious' hole appears in sea ice near Antarctica <p>A huge, mysterious hole has been spotted in sea ice near Antarctica, researchers reported this week.</p>The hole, which was detected about a month ago, is roughly 30,000 square miles or the size of the state of Maine. It's the largest hole spotted in the Weddell Sea since the 1970s, scientists say.

Older ice is generally thicker ice . Over the satellite record, there has been a significant decline in coverage of the oldest, thickest ice . Schlosser, E., Haumann, F. A., and Raphael, M. N. Atmospheric influences on the anomalous 2016 Antarctic sea ice decay.

We’d learned from an Antarctic vulcanologist (now there ' s a sexy job title) that Mount Erebus has recently surged in activity and is spitting out More than an hour later, we arrived at our destination: a tiny heated shed plopped on top of a large hole drilled in the middle of the Ross Sea ice .

These types of sea ice features are known as polynyas. They’re open water where there should, under normal circumstances, be sea ice. They’re sometimes irregularly shaped, but usually as in this case they’re large and roughly oval shaped. The space where they form stays open because there are processes that stop new ice from forming there or the ice is moving from the region. There are two different types of polynyas and they mainly differ in how they lose their ice.

A sensible-heat polynya is formed through the transfer of heat between two entities that are two different temperatures. When this happens the body with more heat transfers some of it to the body with less heat, according to the National Snow and Ice Data Center.

In the case of a polynya, water that is warmer than sea ice comes in contact with the ice, transfers some of its heat and consequently melts some of the ice. This can happen when water above freezing temperatures upwells, or comes from lower parts of the ocean up to the top where the ice sits.

Just for Kicks: Middle School Kids Surprised With Soccer Uniforms and Equipment

  Just for Kicks: Middle School Kids Surprised With Soccer Uniforms and Equipment The newly formed team went on to win their first match in their striking new uniforms. A group of kids in Philadelphia were seen jumping out of their seats with excitement at a school assembly after it was announced they were getting brand new soccer uniforms and equipment.Some of the kids are on the middle school's very first soccer team, but are without the proper apparel.Good Sports, an organization dedicated to providing sporting goods to those who need it, heard about the situation and stepped in.

Giant tabular icebergs are surrounded by ice floe drift in Vincennes Bay on January 11, 2008 in the Australian Antarctic Territory. As long as humans have been keeping track, there ’ s never been this much sea ice surrounding Antarctica . What gives?

Google images of Antarctica show what appears to be a giant staircase in the snow and a giant oval building under the ice . Initial speculation was that this outline out lyin’ in the middle of a frozen plain was a sastrugi – large grooves or ridges in the snow formed by wind and erosion.

  There's A Giant Hole In The Middle Of Antarctic Sea Ice The Recently Formed © Provided by IBT US The second type of polynya is a latent-heat polynya. These occur with a change in state rather than a change in temperature. When ice melts heat is then released into the the surroundings. They can occur when winds blow in one direction constantly and push the ice away.  

But this polynya was formed by a process separate from these two types of polynyas, atmospheric physicist Kent Moore told Motherboard. This polynya is deep in the ice pack which typically doesn’t happen.

As a professor at University of Toronto’s Mississauga campus Moore also works with the Southern Ocean Carbon and Climate Observations and Modeling group. The group identified a polynya in the same area of the Weddell Sea in the 1970s, that was the last time a polynya this large was observed.

The researchers were able to get information about this hole thanks to a floating array that made its way to the polynya and ended up surfacing within it and made contact with satellites. The measurements it had made were transmitted at that time and will help reveal the cause for these types of polynyas. But the research is still unpublished as it’s still in the process of being gathered and analyzed.

Giant Pink Diamond Is Heading to the Auction Block .
But it's not just any pink diamond. It's a fancy intense pink diamond.Gem-quality pink diamonds are extremely rare, making up less than 0.02 percent of all stones evaluated by the Gemological Institute of America (GIA).

—   Share news in the SOC. Networks

Topical videos:

This is interesting!