Feb 3, 2012 6:27am

18-Mile Crack Seen by NASA in Antarctic Glacier

ht antarctic crack jef 120202 wblog 18 Mile Crack Seen by NASA in Antarctic Glacier

Pine Island Glacier in Antarctica, seen from NASA's Terra satellite. NASA/GSFC/METI/ERSDAC/JAROS; U.S./Japan ASTER Science Team.

Antarctica is so vast that the pictures give you no sense of scale. The pencil-thin line across the satellite image of Pine Island Glacier (above) is actually a crack more than 18 miles long, 800 feet across in places, and 180 feet deep.

And it’s growing. In the next few months, scientists expect the glacier to create an iceberg about 350 square miles in area. It will probably float northward, melting as it goes.

“Pine Island Glacier is losing ice very quickly, about six meters per year,” said Michael Studinger of NASA’s Goddard Space Flight Center in Maryland, which sent an expedition called Operation IceBridge to Antarctica in October in an old DC-8 jetliner, modified for scientific operations. It spotted the break in the ice. Earth-observing satellites have been watching it since.

“These things happen on a semi-regular basis in both the Arctic and Antarctic, but it’s still a fairly large event,” said John Sonntag, Instrument Team Lead for Operation IceBridge, in video recorded on the plane. “So we wanted to make sure we captured as much of that process as we could.

“A lot of times when you’re in science, you don’t get to capture the big stories as they happen, because you’re not there at the right place at the right time,” he said, “but this time we were.”

To scientists, this is more than a vast spectacle. Both polar caps are losing ice, and researchers studying the world’s climate say they want to understand the process.

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User Comments

Part of the normal cycle of earth’s existence. People do not realize that we have gone through multiple hot and cold ages over billions of years. At one point, spanning millions of years, the entire earth was covered in ice over 2 miles thick.

Posted by: earthscience | February 3, 2012, 7:23 am 7:23 am

Interesting. Yet, I’m not worried. I know that this planet has more time without polar ice than with polar ice. I fully expect this planet to lose its polar ice. Completely normal.

Posted by: Mike | February 3, 2012, 7:45 am 7:45 am

Earth is just cleanzing itself of it’s infection is all, all civilizations come to an end we are no different and our time is near.

Posted by: justcleanzing | February 3, 2012, 8:59 am 8:59 am

At one point, spanning millions of years, the entire earth was covered in ice over 2 miles thick. Posted by: earthscience | February 3, 2012, 7:23 am.

When was that?

Posted by: A Cynic | February 3, 2012, 9:13 am 9:13 am

It may be normal, but definitely not at the rate that it’s been going. I still can’t believe that people think global warming isn’t real. You should all take an ecology class and learn about it. So ignorant.

Posted by: Allison | February 3, 2012, 9:18 am 9:18 am

When was that?
Posted by: A Cynic | February 3, 2012, 9:13 am 9:13 am

Yesterday, where were you? ;-)

Posted by: david | February 3, 2012, 9:33 am 9:33 am

When was that?

POSTED BY: A CYNIC | FEBRUARY 3, 2012, 9:13 AM====I’m guessing some time before you and I were born.

Posted by: david | February 3, 2012, 9:44 am 9:44 am

Seems logical to me. Take an ice cube out of your freezer. It seems to melt very slow in the beginning and speed up, melting very quickly toward the end. I agree that prior to the ice age, this planet never had polar ice. It wasn’t cold enough. Something happened to freeze the planet (ice age) and it has been thawing ever since.

Posted by: Mike | February 3, 2012, 9:47 am 9:47 am

Now THERE’s a good place to be occupied! But the OWS folks will be sorely disappointed to find that they cant smoke that 18-mile crack. But, still, I’ll donate to the fund to move those losers up there to occupy it.

Posted by: ncpilot15 | February 3, 2012, 10:42 am 10:42 am

Every time a massive iceberg breaks loose in Antarctica, the global warming folks start shouting ‘the sky is falling…the sky is falling.’ Even with no global warming, there would be icebergs breaking loose on a regular basis as long as there continues to be precipitation in Antarctica.

Posted by: Bob | February 3, 2012, 11:47 am 11:47 am

I’ve a question, I was taught in school many,many years ago that the sun was getting larger with time. If so wouldn’t it be logical for the poles to melt?

Posted by: Dennis Downing | February 3, 2012, 11:55 am 11:55 am

nteresting. Yet, I’m not worried. I know that this planet has more time without polar ice than with polar ice. I fully expect this planet to lose its polar ice. Completely normal.POSTED BY: MIKE ****************
and the extinction of life, perfectly normal. Cleanse the earth of humans

Posted by: michael | February 3, 2012, 12:52 pm 12:52 pm

Johnny: Mommy, when I put ice cubes in warm water they crack, is it because of the heat?
Mommy: No, Johnny, the heat has nothing to do with it.
Johnny: Oh, ok.

Posted by: Chris | February 3, 2012, 1:06 pm 1:06 pm

Johnny: Mommy when I put a water filled glass in the freezer, it cracked. Is it because of the heat?
Mommy: No, Johnny, it is because frozen water expands when frozen
Johnny: Oh, ok.

Posted by: deanbob | February 3, 2012, 1:48 pm 1:48 pm

On September 19, 2010, 10 days later than the usual minimum, the arctic ice cover reached 4,600,000 km2 (1,800,000 sq mi), its third lowest value since satellite monitoring began. NASA

Posted by: don | February 3, 2012, 1:50 pm 1:50 pm

Hasn’t it been proven that the poles have melted before and old sea farers sailed across the north pole? How many warming then cooling cycles has the earth been through?

Posted by: deanbob | February 3, 2012, 1:53 pm 1:53 pm

Thats great Chris!!! Bob the skys not falling… I’m not sure, maybe you saw that on FOX. THE ICE IS MELTING!!!

Posted by: don | February 3, 2012, 1:54 pm 1:54 pm

No, that was a hot air ballon Bobby Dean!

Posted by: don | February 3, 2012, 2:12 pm 2:12 pm

I believe you are referring to the Northeast passage, a shipping lane from the Barent Sea to the Bering Straight with the vast majority of the route lying in Arctic waters. In the early 1500′s it was used for shipping for two months out of the year. Now, with Global Warming, the lane has widened greatly.
There have been roughly 511 summers and winters since it opened… sorry warming and cooling cycles!

Posted by: don | February 3, 2012, 2:44 pm 2:44 pm

Posted by: A Cynic—When there was a super continent called Rodinia. The planet was frozen from pole to pole like Hoth in Star Wars.

Posted by: snewsom2997 | February 3, 2012, 3:01 pm 3:01 pm

Posted by: deanbob—100′s if not thousands.

Posted by: snewsom2997 | February 3, 2012, 3:04 pm 3:04 pm

It may be normal, but definitely not at the rate that it’s been going. I still can’t believe that people think global warming isn’t real. You should all take an ecology class and learn about it. So ignorant.

If you are so smart to post the above comment then maybe you should take a history class this happens it has happened in the past and will happen long after you are gone, soon we all hope.

Posted by: Ray | February 3, 2012, 3:08 pm 3:08 pm

I wonder if we could put all politicians on the glacier and iceberg and send them all north?

Posted by: MadGuy1961 | February 3, 2012, 3:11 pm 3:11 pm

Posted by: MadGuy1961—I would rather put them on an iceberg and send them to the equator, but that is just me.

Posted by: snewsom2997 | February 3, 2012, 3:27 pm 3:27 pm

Posted by: Ray—The earth is a natural system more CO2 equals greater plant growth, plants on land, algae in the sea. Trying to game or plan the system is a fools errand, and until we are a United Humanity those that do decide to do something will just be put at a competitive disadvantage to those that don’t. If for a second we think we can stop China and India from trying to have the same lifestyle we have in the US we can’t. If we shrink demand a consume less energy, those countries will just consume more and they will not be as environmentally friendly about it.

Posted by: snewsom2997 | February 3, 2012, 3:38 pm 3:38 pm

The shear stupidity displayed in these comments is appalling.

“It’s all part of a normal heating/cooling cycle.” The last time the Earth’s temperature rose by 5 degrees, 99% of all life on the planet died. It was called the Great Permian Extinction. We have already raised the temperature of the Earth 2 degrees. There are natural variations in the Earth’s orbital elements that cause some heating and warming, known as the Milankovich Cycles. These are extremely well known and show that we should be COOLING.

“[T]he entire earth was covered in ice over 2 miles thick.” And just where did all this water come from and then go to? The deniers feel that they can just make any obviously fallacious statement they want and no one will question it. After all, they didn’t.

“[T]he sun was getting larger with time.” Never mind that the energy output of the sun is known (for good reason) as the Solar Constant and has fluctuated (NOT changed) by all of one half of one tenth of one percent over the last two centuries. What some yokel ‘remembers’ from grade school trumps any actual facts.

“(It’s) been proven that the poles have melted before and old sea farers sailed across the north pole.” Do these posters have any knowledge whatsoever of either the Franklin Expedition or the hardhips endured by Amundsen in actually making this transit? No, but they casually assert a demonstrably false ‘fact’ in support of their ignorant position.

“China and India blah, blah, blah.” China produces abour one tenth of the greenhouse gasses as the United States on a per capita basis and leads the world in both solar and wind technology. But to the deniers it’s always somebody else’s fault, or there’s a ‘reason’ why we should be able to contiue to polute the atmosphere for the entire planet for our own benefit. Go figure.

Posted by: WilliamDawesJr. | February 3, 2012, 6:29 pm 6:29 pm

Posted by: WilliamDawesJr.—The climate cycles run a little longer that 100 years, I don’t deny that CO2, H2O, and Methane are Greenhouse gasses, I don’t deny that man has caused and increase in the out of these gases, But we are not going to refreeze the tundra, or the polar Ice, and short of depopulating the planet, there is nothing that can be done that will meaningfully stop what is happening. Sure we could release Sulphates at high altitude, and then everyone would be just as boned when we accidentally created a volcanic winter and cannot grow food a decade or two. Yes we change the environment, but all the efficiency in the world changes nothing because of population growth.

Posted by: snewsom2997 | February 3, 2012, 7:03 pm 7:03 pm

snewsom2997: So your ‘solution’ is to simply give up and wait for the planet to kill off its infestation of humans? While that WILL happen if we, in fact, do nothing but continue to pollute, I prefer to believe that if what we did was within our capability, so is its undoing. But in the meantime, please stop blaming other people (China and India) for the problems that WE created.

Posted by: WilliamDawesJr. | February 3, 2012, 8:02 pm 8:02 pm

We have this adjective in the English language, “glacial”, which in one sense means “very slow”. That meaning comes of course from the fact that glaciers,as every school boy who has gotten past the mandatory CO2-as-a-piece-of-greenhouse-glass iconography of his science class knows, are like rivers of ice— they flow downhill.

And of course they flow downhill due to their weight, which is the weight of the accumulated snows. Light snows, slower flow. And vice versa. Consequently the line of this story “Pine Island Glacier is losing ice very quickly, about six meters per year…”, which refers to the flow of ice downhill, is completely bogus. The glacier is doing what glaciers always do, which is flow downhill due to the constant renewal of the ice through snowfall.

After all, don’t these same environmentalists bemoan the shrinking glacier, the one that retreats? So are they to be permitted to also bewail, in front of schoolchildren, the glacier only doing what it’s supposed to do?

Posted by: Mike O'Connor | February 3, 2012, 8:49 pm 8:49 pm

And yet another denier posts his half cent’s worth of ‘science’ from grade school and expects to be taken seriously. Yes, glaciers flow downhill (Duh!), But they retreat because the ice at the toe is melting faster than it is being replaced (a result of warming), and their flow downhill speeds up as its base becomes decoupled from the ground below it, by melting (a result of warming). Colder climate would result in growing, slower glaciers. Some people simply need to go back to school.

Posted by: WilliamDawesJr. | February 3, 2012, 9:11 pm 9:11 pm

Memo to ABC “News”:

You should study basic 3rd Grade geography. If you bothered to do so, you would be shocked to learn that, even though it is winter on the Upper West Side of Manhattan, it is the height of summer in the Southern Hemisphere.

Posted by: Ed | February 4, 2012, 2:45 am 2:45 am

Your all fools ,you all fight about who is right or wrong . None of you are correct. Its all about the money ! And you all pay and play in a suckers game. How much can you make or spend on this fantasy they involve us all in. Nobody can control the earth ! If you think we can you are mistaken . How many trees are cut down to make all the paper that has all the information for us to read about climate change ? How many jet rides is necessary for climate officials to go give a speech at some collage ? Or convention? And on and on and on ! Its just another way of the man trying to control us all ! You all have a nice day as you drive to Starbucks to get your Latte :)

Posted by: rex | February 4, 2012, 9:26 am 9:26 am

Rex, I concur that “it’s all about money”. Big gas and coal have done everything possible to undermine the science in order to continue making big profits. Now, that is a conspiracy theory that actually makes sense. To think that world governments, scientists and business are all colluding to change our energy infrastructure based on a known untruth is absolutely insane. The truth is, the climate is changing and we’re causing it.

Posted by: Plantain_11 | February 4, 2012, 12:11 pm 12:11 pm

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