Australian Politics Forum - Massive crack in Larsen C Ice shelf

Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #15 - Jul 8^th, 2017 at 10:03pm Shouldn’t talk about yourself like that but for once something you post has the smell of truth about it.
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TheFunPolice Gold Member Offline Australian Politics Posts: 9009 waggawagga Gender:	Re: Massive crack in Larsen C Ice shelf Reply #16 - Jul 8^th, 2017 at 11:59pm Bobby. wrote on Jul 8^th, 2017 at 5:17pm: lee wrote on Jun 18^th, 2017 at 11:43am: Yea. All that floating ice. It has got to reach a breaking point eventually. And proves nothing - it's been happening since Adam & Eve. The calculus exists for a reason: or do you dispute that?
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TheFunPolice Gold Member Offline Australian Politics Posts: 9009 waggawagga Gender:	Re: Massive crack in Larsen C Ice shelf Reply #17 - Jul 9^th, 2017 at 12:00am Grendel wrote on Jun 18^th, 2017 at 11:34am: Happens all the time on various scales... Ice gets heavy and cracks... not melts. What would Grendel know?
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lee Gold Member Offline Australian Politics Posts: 21533 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #18 - Jul 9^th, 2017 at 11:35am Jovial Monk wrote on Jul 8^th, 2017 at 10:03pm: for once something you post has the smell of truth about it. Yes and all pointed at you. Disconcerting isn't it?
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #19 - Jul 9^th, 2017 at 11:50am Quote: Shouldn’t talk about yourself like that but for once something you post has the smell of truth about it.
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lee Gold Member Offline Australian Politics Posts: 21533 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #20 - Jul 9^th, 2017 at 12:11pm Jovial Monk wrote on Jul 9^th, 2017 at 11:50am: Quote: Shouldn’t talk about yourself like that but for once something you post has the smell of truth about it. Yes but that quote has been pointed at you for some time; and you know it. So it is just delusional on your part to pretend otherwise.
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #21 - Jul 9^th, 2017 at 12:40pm Quote: Shouldn’t talk about yourself like that but for once something you post has the smell of truth about it.
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Grendel Gold Member Offline OzPolitic Posts: 28080 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #22 - Jul 9^th, 2017 at 3:12pm A crack? Oh no.... You do realise CRACKS are usually caused by weight or earth movements don't you?
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TheFunPolice Gold Member Offline Australian Politics Posts: 9009 waggawagga Gender:	Re: Massive crack in Larsen C Ice shelf Reply #23 - Jul 10^th, 2017 at 2:27pm Grendel wrote on Jul 9^th, 2017 at 3:12pm: A crack? Oh no.... You do realise CRACKS are usually caused by weight or earth movements don't you? What would Grendel know ?
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Grendel

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Re: Massive crack in Larsen C Ice shelf
Reply #24 - Jul 10^th, 2017 at 3:23pm

The Larsen Crack....

Quote:

What does this all mean for the rest of the planet? Unfortunately, it's hard to say.

According to the British Antarctic Survey, which works with MIDAS,

scientists don't really know whether the crack in Larsen C has anything to do with climate change,

although there is some evidence that the ice shelf has become thinner because of it.

"I doubt it will ever be possible to link this rift to climate change," says Luckman. "What we CAN say is that ice-shelves seem in general to be responding to a warmer climate. For Larsen C, all I would say is that climate warming (ocean or atmosphere) cannot be directly linked to the rift, but probably won't have hindered its growth."

It's normal for cracks to form in ice shelves and calve to produce icebergs, as part of a cyclical process in which the shelves, fed by glaciers and ice streams from the continent's interior, gradually advance, break and then slowly regenerate.

"Calving from all Antarctic ice shelves occurs periodically,"

H. Jay Zwally, a senior research scientist at NASA, explains via email. "Some calving is in small icebergs and less frequently is in large tabular icebergs as the one about to calve from Larsen C. This calving occurs to balance the continuous flow of ice into the shelves over the grounding line — i.e. the ground ice sheet on upstream side and floating ice shelf on the ocean-ward side."

He notes that such calving "occurs at decadal intervals without climate change to make it happen."

http://science.howstuffworks.com/environmental/green-science/antarctica-larsen-c...

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« Last Edit: Jul 10^th, 2017 at 3:29pm by Grendel »

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The_Barnacle Gold Member Offline Australian Politics Posts: 6205 Melbourne Gender:	Re: Massive crack in Larsen C Ice shelf Reply #25 - Jul 12^th, 2017 at 9:56pm You are being very defensive there Grendel I never said it was anything to do with climate change. This is an Environmental forum, I thought that this story was of environmental interest
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lee Gold Member Offline Australian Politics Posts: 21533 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #26 - Jul 12^th, 2017 at 9:58pm The_Barnacle wrote on Jul 12^th, 2017 at 9:56pm: I thought that this story was of environmental interest Why? A floating ice shelf is not going to do anything to sea level.
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #27 - Jul 12^th, 2017 at 10:16pm Greenland used to have iceshelves like Antarctica does. The OMG program showed that once the ice shelves went the loss of ice from Greenland glaciers accelerated. Looks like this is starting to happen to Antarctica. (OMG—Oceans Melting Greenland)
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Sprintcyclist

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Re: Massive crack in Larsen C Ice shelf
Reply #28 - Jul 12^th, 2017 at 10:36pm

Quote:

.............A TRILLION-tonne iceberg, one of the largest ever recorded, has snapped off the West Antarctic ice shelf, scientists have confirmed.

Researches have been monitoring the steadily growing crack in the Larsen C Ice Shelf for years. Swansea University finally announced on Wednesday that the rift had completed its path through the ice, causing a 5,800-square kilometre section of the shelf to snap off.

The massive ice cube is twice the size of the Australian Capital Territory, four times the size of London and twice the size of Luxembourg. It is about 350 metres thick.

“The iceberg weighs more than a trillion tonnes, but it was already floating before it calved away so has no immediate impact on sea level,” the research team said. It will likely be named A68.

With the calving, the Larsen C ice shelf lost more than 12 per cent of its total surface area.

Icebergs calving from Antarctica are a regular occurrence. But given its enormous size, the latest berg will be closely watched as it travels, for any potential risk to shipping traffic.

The calving may have heightened the risk of the remaining ice shelf disintegrating, the Swansea team said.

RELATED: Antarctica Larsen C ice shelf cracking giant iceberg.............

drat, this'll cool down the ocean for my swimming

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Modern Classic Right Wing

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Jasin Gold Member Online Posts: 58062 Gender:	Re: Massive crack in Larsen C Ice shelf Reply #29 - Jul 12^th, 2017 at 11:53pm Yep - just saw it on the Antarctic FB page. Massive 6,000 square kms. I doubt it will float out beyond the Southern Gyre.
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