Декабря 12, 2017


Massive Giant Hole Larger Than The Netherlands Cracks Open In Antarctica

13 Октября 2017, 12:38 | Terri Saunders

A giant hole has opened up in Antarctica. Motherboard

A giant hole has opened up in Antarctica. Motherboard

Scientists are now investigating to know how it was formed. This gaping polynya, which measures an area equivalent to the Netherlands, opened right in the middle of a sea which would have otherwise been completely covered in thick ice. Such ice-free areas are called 'polynya' (Russian) by polar scientists. Then it wasn't seen for four decades, reopened for a few weeks past year and has emerged yet again.

A huge hole almost the size of the state of ME has opened up in the thick sea ice blanketing Antarctica's Weddell Sea.

"It looks like you just punched a hole in the ice", atmospheric physicist Kent Moore, a professor at the University of Toronto Mississauga, explained.

At its largest the polynya measured 80,000 kilometres - making it larger than the Netherlands and roughly the same size as the US state of Maine. It went away for four decades until it reopened for a few weeks previous year.

At the moment scientists cannot explain the origin of this hole.

The going theory, Moore said, is that ocean currents are lifting warmer waters from the ocean's depths up to the surface, where it's melting the ice. Did the Weddell polynya occur before 1970, and we are looking at a periodic process that shows itself about every 40 years?

Читайте также: Thousands report Facebook/Instagram 'blackout' as users unable to access sites

Blaming climate change for this giant hole is one alternative that the scientists have but according to Moore, that would be a premature thing. The reappearance of the hole will bring new data to help solve the quandary. The salt increases the density of the surface water, making the surface water heavier than the water below, causing it to sink.

The Southern Ocean of Antarctica has very deep waters which is warmer and saltier than the surface water.

A larger version of the hole was observed in satellite observations in the same area of Antarctica in 1974, and it reopened past year for a few weeks.

Although it's safe to assume that this massive hole in sea ice is connected to the climate change, however, that may not be the case.

'Global warming is not a linear process and happens on top of internal variability inherent to the climate system, ' Latif says.

Researchers say that with new ocean measurements, the space-based images and climate models, they're hoping to finally unravel the polynyas' secrets and their impacts on the climate.

При любом использовании материалов сайта и дочерних проектов, гиперссылка на обязательна.
«» 2007 - 2017 Copyright.
Автоматизированное извлечение информации сайта запрещено.

Код для вставки в блог



Other News

Trending Now

Hamas says reached deal with Palestinian rival Fatah
It has fought three wars with Israel since 2008 and the blockaded Gaza Strip has faced deteriorating humanitarian conditions. The publicly-released parts of the agreement did not specify what would happen to Hamas' armed wing.

Anupam Kher is the new FTII chairman, replaces Gajendra Chauhan
Chauhan, however, said FTII needs a good administrator, more than a good actor. "My good wishes are with him", he added. So, I think he will be able to handle it quite nicely. "I will go with a clear mind and do as much work as I can".

Parents win murder appeal in case that divided India
The jail officials said that Rajesh Talwar and his wife Nupur Talwar had not eaten anything since morning and prayed for hours. The agency has said it will take a call on appealing the high court's decision after it goes through the judgement.

Court Rules in Favor of National Football League in Ezekiel Elliott Suspension
Mazzant is the one who issued the decision on the injunction, and it would be unusual for a judge to overturn his own ruling. The NFL filed in NY and they thought this would help them win this case having it away from Elliott's home state of Texas.

Arsene Wenger admits Gunners ARE considering selling Mesut Ozil in January
Speaking ahead of this weekend's clash against Watford, Wenger said: "In our situation, we have envisaged every solution".

Health officials see sharp increase in influenza cases in San Diego County
A flu-like illness is often characterized by sudden onset of fever, sore throat, muscle aches, cough and weakness. Anyone can get influenza, and it can be a serious illness that may cause hospitalization and death.

NYPD Now Officially Investigating Harvey Weinstein
In a statement, Twitter said Thursday it was a tweet by McGowan with a personal phone number that violated its service terms. The statement acknowledged that accusers often speak out at and face great professional and emotional risk.

Donald Trump: NFL should have suspended Colin Kaepernick for kneeling
On Sept. 25th, Donald Trump wrote a tweet calling out the players for their protest and how it disrespects veterans and the U.S. He has repeatedly suggested that the players that are kneeling during the national anthem should be fired for their actions.

Dems who opposed Iran nuke deal urge Trump to keep pact
Many Democrats believe that is more likely to happen if Congress does not act to make changes to the existing agreement. Unilateral U.S. sanctions would entail stringent provisions applying to European Union companies that deal with Iran.

Sky suffers shareholder revolt over directors' pay and James Murdoch re-election
Today's update comes as Sky awaits a decision from the competition watchdog on a proposed takeover by 21st Century Fox. He said the company was seeing good demand for its flagship Sky Q product as well as for its streaming service Now TV.