The researchers propose that, unlike in Antarctica where surface temperatures remain below freezing all year round, the newly discovered lakes are most likely fed by melting surface water draining
through cracks in the ice.
Scientists have found that on the Greenland Ice Sheet, the melt water penetrates
through cracks in the ice down to the bedrock.
Not exact matches
Spring has started to melt a way
through the giant frozen expanse of this archipelago
in western Finland, as
cracks in the
ice turn into rust - coloured pools around wooden jetties
in a sign of the coming summer.
The rear treads had broken
through a
crack in the sea
ice and were sinking into the cold water.
The discovery of waterlogged minerals and a growing
ice wall suggests that the dwarf planet could harbor underground liquid water or slushy brine, which has escaped
through cracks and craters
in the recent past and may still be seeping out today.
«This means that more water can go
through the
cracks and eat the
ice away,» says Adrien Gilbert, a UiO glaciologist who described his team's findings at the Third Pole Science Summit last July
in Kunming, China.
In order to create a cryovolcano, says O'Brien, the water pressure needs to build up enough to launch up
through the shell before the
ice cracks and relieves the pressure.
It's not clear why the
crack made it
through the soft
ice, and whether other rifts will follow suit
in the coming years.
Was it rock grinding on rock,
ice groaning over
ice, or, perhaps, hot gases and liquid rock forcing their way
through cracks in a volcanic complex?
They discovered potentially revelatory harmonic properties of
ice quakes, which are minor rumbles produced when
cracks in the
ice are reshaped by water flowing
through them.
The gas breaks
through to the surface exploiting weaknesses and
cracks in the
ice forming geysers or jets.
As this water moves
through rocks, it dissolves salt compounds and pushes
through fractures
in the overlying
ice to form reservoirs closer the moon's surface, where it is expelled into space when the outermost layer of the crust
cracks open and the resulting depressurization of these reservoirs causes water vapor and
ice particles to shoot out
in the observed plumes.
The situation is far more dire up
in Shishmaref, where not only is ground disappearing but so are people, such as the son of an Eskimo who perished when he fell
through a
crack in the rapidly melting Arctic
ice.
Through the
cracked ice of a massive iceberg and bullet hole
in a glass window, he comes to the works based on the X-rays of paintings by van Gogh and the Old Masters.
I assume every glacier is different, so there's no single answer whether meltwater is successfully penetrating
through cracks to the base and staying melted, and whether stresses
in the
ice are opening
cracks further, and which glaciers have beds sloping downhill going inland
In some cases, the water percolates through cracks and is thought to speed the flow of ice to the sea; thus the resulting rise in sea level
In some cases, the water percolates
through cracks and is thought to speed the flow of
ice to the sea; thus the resulting rise
in sea level
in sea levels.
The stunning blue meltwater lake that formed on the Arctic
ice disappeared on Monday (July 29), draining
through a
crack in the underlying
ice floe.
Numerous processes contribute to this, including the removal of buttressing
ice shelves (i.e.,
ice tongues floating on water but
in places anchored on islands or underwater rocks) or the lubrication of the
ice sheet base by meltwater trickling down from the surface
through cracks.
As the surface
ice begins to melt, some of the water filters down
through cracks in the glacier, lubricating the surface between the glacier and the rock beneath it.
Some of this meltwater infiltrated
cracks in the
ice, slicing
through the shelf.
Surface meltwater can penetrate
through cracks in the surface, and force them open, allowing large amounts of water to drain to the bed and spread out across the base of the
ice sheet, lubricating it (Zwally et al. 2002).
Although only a tiny fraction of the
ice shelf melts, the water infiltrates the shelf
through small
cracks in the
ice.
As the
ice melts, water begins to run down the side of the home and seeps
through a
crack in the vinyl siding, causing damage to the framing of the house.