Tag Archives: Shelf

Bear enters Montana home, cuddles up for a nap on closet shelf

Bear enters Montana home, cuddles up for a nap on closet shelfMontana Fish, Wildlife and Parks assisted the Sheriff’s Office in tranquilizing the black bear, and it was relocated unharmed.



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Scientists Nervously Watch The Huge Iceberg That Broke From The Larsen C Ice Shelf

Scientists Nervously Watch The Huge Iceberg That Broke From The Larsen C Ice ShelfNow that the iceberg has broken off of the Larsen C ice shelf, researchers are watching closely to see if it follows a typical path.



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Iceberg four times the size of London breaks off from Antarctica ice shelf

Iceberg four times the size of London breaks off from Antarctica ice shelfA trillion-tonne iceberg – one of the largest on record – has broken away from an ice shelf in Antarctica. Researchers have been monitoring a huge crack in the Larsen C Ice Shelf, which had left a vast iceberg more than four times the size of London or a quarter the size of Wales "hanging by a thread". Scientists announced on Wednesday that the rift had finally completed its path through the ice, causing the 2,200 square mile (5,800 square kilometre) iceberg to snap off. A massive section of Larsen-C ice shelf calving off the glacier in a satellite image released by the European Space Agency Credit: ESA The calving of the iceberg reduces the size of the Larsen C Ice Shelf by around 12 per cent and will change the landscape of the Antarctic Peninsula forever, the team from the Swansea University-led Midas project said. The iceberg, which is now likely to be named A68, broke away at some time between Monday and Wednesday. The final breakthrough was detected in data from Nasa's Aqua MODIS satellite instrument. Professor Adrian Luckman, of Swansea University, said: "We have been anticipating this event for months, and have been surprised how long it took for the rift to break through the final few kilometres of ice. An image from NASA shows the Antarctic Peninsula's rift in the Larsen C ice shelf Credit: AFP "We will continue to monitor both the impact of this calving event on the Larsen C Ice Shelf, and the fate of this huge iceberg. "The iceberg is one of the largest recorded and its future progress is difficult to predict. It may remain in one piece but is more likely to break into fragments. From 6 July to 12 July, #Sentinel1 caught the final days and eventual full break-off of the berg. #LarsenCpic.twitter.com/2kVVjx4Syk— ESA EarthObservation (@ESA_EO) 12 July 2017 "Some of the ice may remain in the area for decades, while parts of the iceberg may drift north into warmer waters." Although the iceberg weighs a trillion tonnes, it was already floating before it calved away so will have no immediate impact on sea level. While the researchers said the calving was a "natural event", it put the ice shelf in a vulnerable position. A huge crack had left the Larsen C Ice Shelf 'hanging by a thread', scientists said Credit: JOHN SONNTAG/AFP There are concerns that Larsen C could follow the example of its neighbouring ice shelf Larsen B, which disintegrated in 2002 after a similar event. Dr Martin O'Leary, a Swansea University glaciologist and member of the Midas project team, said: "Although this is a natural event, and we're not aware of any link to human-induced climate change, this puts the ice shelf in a very vulnerable position. Nasa Suomi VIIRS panchromatic image from July 12 2017, confirming the calving Credit: Nasa "This is the furthest back that the ice front has been in recorded history. We're going to be watching very carefully for signs that the rest of the shelf is becoming unstable." Prof Luckman added: "In the ensuing months and years, the ice shelf could either gradually regrow, or may suffer further calving events which may eventually lead to collapse – opinions in the scientific community are divided. "Our models say it will be less stable, but any future collapse remains years or decades away." If the shelf loses much more area, it could result in glaciers which flow off the land behind speeding up their path to the ocean, which could have an eventual impact on sea levels – though at a very modest rate, the scientists said. Larsen C Ice Break Growth of Larsen C's rift size



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Colossal crack in Antartica ice shelf about to drop state-sized iceberg into the ocean

Colossal crack in Antartica ice shelf about to drop state-sized iceberg into the ocean

With President Donald Trump announcing that the United States won't be joining a huge number of its allies in supporting the Paris Agreement on climate change rules just a day ago, an extremely troubling development in Antarctica is helping to underscore just how bad of a decision that really was. A crack in the Larsen C ice shelf on the frigid continent has grown rapidly in the past week, and a complete break is expected imminently. When that happens, a chunk of ice as large as the state of Delaware will be released into the ocean, creating one of the world's largest icebergs ever.

The crack, which is currently roughly 120 miles long, has grown by several miles in just the past week, and is now just eight miles from being complete. Researchers are pointing to the accelerated break — called "calving" — as a further sign that human-caused climate change is currently at a tipping point from which we may not be able to recover.

The shelf's calving, as troubling as it is on its own, is (unfortunately) just part of a bigger picture. Scientists believe that, once the shelf does make its way freely into the ocean, the event could further destabilize the rest of the glacier, leading to increased break-ups in the immediate future.

"When it calves, the Larsen C Ice Shelf will lose more than 10% of its area to leave the ice front at its most retreated position ever recorded," Professor Adrian Luckman of Swansea University College of Science said of the calving. "This event will fundamentally change the landscape of the Antarctic Peninsula."



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Massive Crack in Antarctic Ice Shelf Grows 11 Miles in 6 Days, Potentially Creating World’s Largest Iceberg

Massive Crack in Antarctic Ice Shelf Grows 11 Miles in 6 Days, Potentially Creating World’s Largest IcebergThis Nov. 10, 2016 aerial photo released by NASA, shows a rift in the Antarctic Peninsula’s Larsen C ice shelf. According to NASA, IceBridge scientists measured the Larsen C fracture to be about 70 miles long, more than 300 feet wide and about a third of a mile deep. In the six days before President Trump announced his decision to withdraw from the Paris Climate Agreement, an enormous crack in an Antarctic Ice Shelf grew 11 miles according to a report by British Antarctic research group Project MIDAS.



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