profishingrods.com
profishingrods.com October 21, 2017


Giant hole the size of ME reopens in Antarctica's Weddell Sea

12 October 2017, 02:11 | Dale Webster

Massive Hole Has Opened Up in Antarctica (Report)

A Giant Mysterious Hole Has Emerged In Antarctica And Scientists Still Don't Know The Reason

A massive hole called a polynya opened in Antarctica's Weddell Sea last month, a odd occurrence as polynyas typically don't develop deep in the ice pack, Motherboard reports. This isn't the first time it's been spotted, having appeared a year ago for a brief period as well, and long before that it was detected back in the 1970s.

Known as a polynya, this year's hole was about 30,000 square miles at its largest, making it the biggest polynya observed in Antarctica's Weddell Sea since the 1970s.

"At that time, the scientific community had just launched the first satellites that provided images of the sea-ice cover from space", said Torge Martin, a meteorologist and climate modeler, as quoted by Phys.org.
The blue curves represent the ice edge.

Actually, this type of phenomena can be termed as polynya- an area of open water completely enclosed by sea ice. "In the depths of winter, for more than a month, we've had this area of open water", Kent Moore, an atmospheric scientist at the University of Toronto, told National Geographic.

'This is now the second year in a row it's opened after 40 years of not being there, ' Moore explained.

It's not clear at this point if the ice hole is influenced in any way by climate change. As per the report, the largest estimates of the hole's current size put it around 80,000 square kilometers.




Scientists weren't expecting the polynya to re-appear, and aren't sure why it has resurfaced twice in the past two years. "This is like opening a pressure relief valve-the ocean then releases a surplus of heat to the atmosphere for several consecutive winters until the heat reservoir is exhausted", Latif said.

Simulated temperature development in the area of the polynya is illustrated above.

The polynya went away for forty years and reopened in September 2016 for a few weeks. A team comprised of scientists from the University of Toronto and the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project found the hole during one of the monitoring exercises with the help of satellite technology.

"Global warming is not a linear process and happens on top of internal variability inherent to the climate system. We don't really understand the long-term impacts this polynya will have".

Experts say it's too early to know how climate change has affected the formation of the huge polynya, if it's to blame at all.



Other News

Trending Now

Amazon.com, Inc. (AMZN) Shares Sold by Rothschild Asset Management Inc
It turned negative, as 26 investors sold COHR shares while 115 reduced holdings. 26 funds opened positions while 57 raised stakes. The stock of Tractor Supply Company (NASDAQ:TSCO) has "Outperform" rating given on Thursday, October 20 by Telsey Advisory Group.

Boy Scouts will admit girls in 2018
The Girl Scouts of the United States of America said the move strains the century-old bond between the two organizations. From a peak of over 5 million members in the 1970's there are now under two and a half million boys in scouting.

Institutional Investors Positive on Activision Blizzard Inc (NASDAQ:ATVI)
RBC Capital Markets initiated Bottomline Technologies (NASDAQ:EPAY) on Friday, September 30 with "Sector Perform" rating. The shares were sold at an average price of $49.90, for a total transaction of $20,961,143.70. (NYSE:PRO) or 200 shares.

Ashish Nehra Announces Retirement From International Cricket, Twitterati Recall His Best Spells
The 38-year-old Nehra was a surprise pick in the Indian team for the ongoing Twenty20 global series against Australia. The three-match rubber is tied 1-1 with the decider on Friday (October 13) in Hyderabad .

Cops Called On Harvey Weinstein 'Feeling Suicidal And Depressed'
Law enforcement sources confirm officers responded to a call from Remy, who said her father was "suicidal and depressed ". Video obtained by TMZ shows Weinstein outside his 22-year-old daughter Remy's home, stumbling on to a suburban road.

67 deaths from West Nile virus reported in US
The city of Frisco has confirmed 18 mosquito pools that have tested positive for West Nile virus so far this year. When outdoors, wear long trousers and long-sleeved shirts and use mosquito repellents.

Congress demands judicial probe into Amit Shah's son scam
However, in 2015-16, the firm's revenues mysteriously jumped to over Rs 80.5 crores, a growth of 16,000 times. He alleged that it is the second instance where a BJP leader's child from Gujarat has been caught in a scam.

Tyrese Slams Dwayne "The Rock" Johnson For Delaying Next Fast & Furious Film
On Monday (Oct. 9), the Rock announced that he is indeed working on a " Hobbs " movie, which is slated to hit theaters in 2019. Sitting in a luxurious white limo, Tyrese says to a TMZ reporter , "I wish he was releasing it at a different time".

Trump Iran deal plan risks opening nuclear 'Pandora's box'
Some top figures in Congress are already deeply skeptical of the Trump effort to kill the deal, with Rep. So far Trump has certified the accord but said the next deadline on Sunday is the crucial one.

Finally! Amazon introduces a waterproof Kindle; priced at Rs 21999
The Kindle Oasis can be connected to wireless headphones or wireless speakers via Bluetooth. The device integrates Amazon's Audible audiobook service, which is a first for a Kindle.