Erosion carved these icy blue cliffs
from sheets of ice just below Mars's layer of dust (Science, DOI: 10.1126 / science / aao1619).
Not exact matches
Not only that but they are also on a moving glassier and the
ice cores used for dating well they are taken
from the interior
of the
ice sheet where the
ice is quite stable and they don't get anywhere near 2 meters
of snow per year.
Line two baking trays with baking paper, and cut desired tuile shapes (roughly 4x12cm in size)
from an
ice - cream container lid or a
sheet of acetate.
1) Mix flour, butter and
icing sugar in a bowl using two knives to cut the butter until the mixture resembles fine breadcrumbs 2) Add in the egg yolks and vanilla extracts and mix well, then add
iced water until the dough starts to come together 3) Shape the dough into a ball on a cool, flat, floured surface 4) Flatten dough into a disc and then wrap in plastic wrap, and chill in the refrigerator for at least 30 minutes 5) Meanwhile, peel, core and slice the apples into as thin slices as possible 6) Mix sugar and ground cinnamon powder with sliced apples and let it rest for a while 7) Pre-heat oven to 180 deg cel 8) Once dough has chilled, roll pastry dough on a
sheet of parchment paper until it has expanded to the size
of the tart mold (I used a rough mold the size
of a large pizza) 9) Leaving at least an inch
of dough free, arrange apple slices by overlapping them slightly in the shape
of a circle, starting
from the outermost part
of the circle, until you reach the inside 10) Fold the edges
of dough over the filling and then sprinkle the dough with a bit
of sugar 11) Bake for about 40 - 45 minutes, or until the crust is golden brown and the apples are soft 12) Serve warm, with a side
of whipped cream or
ice cream (optional)
Scoop 2 to 3 tablespoon portions
of the cookie dough onto the prepared baking
sheet using a medium - size spring - loaded
ice cream scoop, placing them about 1 1/2 - inches apart
from one another.
Becoming emotionally invested in a sports team is an inherently irrational activity, so pulling out the «It's a bunch
of people who don't call Pennsylvania home getting paid ridiculous amounts
of money to chase a piece
of rubber up and down a
sheet of ice» on a sports fan blog is just as silly as deciding everyone who chooses to support a team
from Western Pennsylvania is stupid.
After receiving a pass
from Messi, Neymar dribbled into the box and made City defender John Stones look as if he was trying to walk on a
sheet of ice.
According to the Center for Remote Sensing
of Ice Sheets (CReSIS), an NSF Science and Technology Center led by the University of Kansas, the melt from Greenland's ice sheet contributes to global sea level rise at a rate of 0.52 millimeters annual
Ice Sheets (CReSIS), an NSF Science and Technology Center led by the University
of Kansas, the melt
from Greenland's
ice sheet contributes to global sea level rise at a rate of 0.52 millimeters annual
ice sheet contributes to global sea level rise at a rate
of 0.52 millimeters annually.
Almost exactly a year ago, a 251 - square - kilometer
sheet of ice broke
from the Petermann Glacier in Greenland and started slowly drifting into the open ocean.
Following the maxim
of keeping everything as simple as possible, but not simpler, Will Steffen
from the Australian National University and I drew up an Anthropocene equation by homing in on the rate
of change
of Earth's life support system: the atmosphere, oceans, forests and wetlands, waterways and
ice sheets and fabulous diversity
of life.
Stewart Jamieson
from Durham University in England and his colleagues made the discovery by looking for subtle changes in the
ice sheet's surface shapes, developed as a result
of ice flowing over diverse topography.
Any parts
of the bed this low are easily exposed to ocean water, allowing the
ice sheet to weaken
from below as the ocean water warms.
That question is central to understanding the effects
of ice sheet melting on ocean water properties, circulation, and biological systems, on scales
from local to basinwide.
A hydrologist is studying the runoff
from one chunk
of the country's
ice sheet to trace it back to its source
This gives confidence in the predictions
of the current generation
of ice -
sheet models which are used to forecast future
ice loss
from Antarctica and resulting sea - level rise.»
While satellite measurements and climate models have detailed this recent
ice loss, there are far fewer direct measurements
of melt collected
from the
ice sheet itself.
Solids transmit sound efficiently: The grinding
of Europa's thick
ice sheets would make the surface
of that Jovian moon far
from library - quiet to an astronaut there.
From an appendectomy on the Antarctic
ice sheet to the comparative luxury
of the new South Pole station, scientist Vladimir Papitashvili talks about his life's work at the poles
For this study, researchers
from Dartmouth and Boise State University spent two months on snowmobiles to collect seven
ice cores from the remote «percolation zone» of the West Greenland Ice She
ice cores
from the remote «percolation zone»
of the West Greenland
Ice She
Ice Sheet.
The icebergs that find their way into the paths
of transatlantic liners come down
from the coast
of Greenland; for the interior
of Greenland is a huge
ice sheet fringed by mountains and promontories.
Exact numbers are a work in progress The scientists used a combination
of surface elevation data
from satellites and planes between 1978 and 2012 and a GPS network that weighs the
ice sheet like a scale, according to Ohio State.
Yet these model - based estimates do not include the possible acceleration
of recently observed increases in
ice loss
from the Greenland and Antarctic
ice sheets.
Although a British team was unsuccessful in its quest to penetrate Lake Ellsworth, a group
of Russian scientists successfully retrieved samples
from Lake Vostok, thousands
of kilometers away on the Eastern Antarctic
Ice Sheet.
Dan Sampson
from the University
of California in Santa Cruz jumps to test seismic sensors that are buried in the West Antarctic
Ice Sheet, nearly 650 miles and a world away
from the Dry Valleys.
From 500 feet up everything appeared in miniature except the giant
ice shelves — seemingly endless expanses
of ice, as thick as the length
of several football fields, that float in the Southern Ocean, fringing the
ice sheets that virtually cover the Antarctic landmass.
Recent modelling by researchers
from the Potsdam Institute for Climate Impact Research in Germany, as well as studies
of past climate, suggest that the planet will soon have warmed enough to melt Greenland's
ice sheet entirely — if it hasn't already become warm enough.
So far, the Ohio State team has finished processing images
from about one quarter
of the Greenland
Ice Sheet, representing a tiny portion
of the data already stored at Minnesota, and about one year's worth
of work and computing for the research team.
But understanding what is happening down there, so far
from human view, will be crucial for predicting the future fate
of Antarctica's
ice sheets amid rising temperatures.
When the team looked at the overall balance between the radiation upward
from the surface
of the
ice sheet and the radiation both upward and downward
from the upper levels
of the atmosphere across all infrared wavelengths over the course
of a year, they found that in central Antarctica the surface and lower atmosphere, against expectation, actually lose more energy to space if the air contains greenhouse gases, the researchers report online and in a forthcoming Geophysical Research Letters.
This isn't the first time
ice sheets have calved
from the Greenland mainland, but it's one
of the largest breaks.
Perhaps extra carbon dioxide
from a period
of heightened seafloor eruptions eventually percolates through the ocean and into the atmosphere, allowing warming that would deliver a coup de grâce to the massive
ice sheets.
Europe and America are moving away
from one another; the Scandinavian countries, once weighed down by enormous
sheets of ice, are now rising.
Using NASA and European Space Agency satellites, the 2015 study had measured the changing height
of the
ice sheet and determined that East Antarctica was ballooning upward by roughly 1.59 centimeters a year (at least
from 1992 to 2001 and
from 2003 to 2008).
Should Antarctica's
ice sheets dissolve, sea levels would rise dramatically — enough to flood the world's great coastal megalopolises
from New York to Shanghai and push millions
of people inland.
Even relatively large calving events, where tabular
ice chunks the size
of Manhattan or bigger calve
from the seaward front
of the shelf, can be considered normal if the
ice sheet is in overall balance.
At present the
ice sheet is grounded on underwater islands, which insulate some
of the
ice from the melting effect
of the seawater upon which the rest
of the
sheet floats.
The scientists looked into the hypothesis that soot
from forest fires in China, Siberia and North America could be driving the increased darkening
of the
ice sheet.
Today, as warming waters caused by climate change flow underneath the floating
ice shelves in Pine Island Bay, the Antarctic Ice Sheet is once again at risk of losing mass from rapidly retreating glacie
ice shelves in Pine Island Bay, the Antarctic
Ice Sheet is once again at risk of losing mass from rapidly retreating glacie
Ice Sheet is once again at risk
of losing mass
from rapidly retreating glaciers.
Modeling studies on geoengineering to reflect sunlight away
from the Earth suggest that modifying the planet's reflectivity could slow the meltdown
of the Greenland
ice sheet in the short term, but not stop it entirely, and could still allow an eventual total meltdown in the next millennia or so.
Eventually, the floating
ice shelf in front
of the glaciers «broke up», which caused them to retreat onto land sloping downward
from the grounding lines to the interior
of the
ice sheet.
Thousands
of marks on the Antarctic seafloor, caused by icebergs which broke free
from glaciers more than ten thousand years ago, show how part
of the Antarctic
Ice Sheet retreated rapidly at the end of the last ice age as it balanced precariously on sloping ground and became unstab
Ice Sheet retreated rapidly at the end
of the last
ice age as it balanced precariously on sloping ground and became unstab
ice age as it balanced precariously on sloping ground and became unstable.
The Ross
Ice Shelf, a thick, floating tongue of solid ice the size of Spain, is the biggest of the many such barriers that ring Antarctica and keep its ice sheets from sliding into the s
Ice Shelf, a thick, floating tongue
of solid
ice the size of Spain, is the biggest of the many such barriers that ring Antarctica and keep its ice sheets from sliding into the s
ice the size
of Spain, is the biggest
of the many such barriers that ring Antarctica and keep its
ice sheets from sliding into the s
ice sheets from sliding into the sea.
«We should be worried about the Greenland
Ice Sheet,» says Joerg Schaefer, a geochemist
from Columbia University's Lamont - Doherty Earth Observatory in Palisades, New York, and lead author
of the findings, presented yesterday at the American Geophysical Union's annual meeting here.
Pine Island Glacier and the neighbouring Thwaites Glacier are responsible for nearly a third
of total
ice loss from the West Antarctic Ice Sheet, and this contribution has increased greatly over the past 25 yea
ice loss
from the West Antarctic
Ice Sheet, and this contribution has increased greatly over the past 25 yea
Ice Sheet, and this contribution has increased greatly over the past 25 years.
«IceBridge surveyed previously unexplored parts
of the Greenland
Ice Sheet and did it using state -
of - the - art CReSIS radars,» said study co-author Mark Fahnestock, an IceBridge science team member and glaciologist
from the Geophysical Institute at the University
of Alaska Fairbanks (UAF - GI).
That might include draining away the water that lubricates the bottom
of an
ice sheet, speeding its progress to the sea, or installing barriers to prevent warming ocean waters
from hitting the bottom
of such glaciers and hastening meltdown.
the south - bound expedition had cleared that vast plain
of floating
ice which flows down
from the great mountains
of the interior and covers the southern part
of Ross Sea throughout an area above 20,000 square miles with an
ice sheet approximately 800 feet in thickness, and had begun to climb the heights which form the mountainous embayment at the head
of Ross Sea.
The Dark Zone
of Greenland
ice sheet is a large continuous region on the western flank
of the
ice sheet; it is some 400 kilometers wide stretching about 100 kilometres up
from the margin
of the
ice.
Now Corbett, Shakun, and others are applying this isotope technique to additional cores taken
from around the coast
of Greenland to get a more complete and in - focus picture
of the whole
ice sheet's long history.
Their results overcome a basic problem
of trying to discern the deep history
of ice from bedrock: every time an
ice sheet retreats and then grows back, it scours away the bedrock and the isotope record
of its own past.