Sentences with phrase «under the ice shelves of»

This image shows the path of the Kelvin waves that interact with the Antarctic Circumpolar Current and push warmer waters under the ice shelves of the West Antarctic Peninsula.

Not exact matches

They found that western Antarctica has recently seen warmer, saltier water being driven under the shelf — the part of the ice sheet that sticks out over the ocean (Science, doi.org/xkx).

Scientists have drilled into one of the most isolated depths in all of the world's oceans: a hidden shore of Antarctica that sits under 740 meters of ice, hundreds of kilometers in from the sea edge of a major Antarctic ice shelf.

«The new data set will allow us to check if our ocean models can correctly represent changes in the flow of warm water under ice shelves,» he added.

Previous work has estimated that more than a trillion tonnes of methane lie under the shelf, trapped inside lattices of ice known as hydrates, at depths as shallow as 20 metres.

Changes to Antarctic winds have already been linked to southern Australia's drying climate but now it appears they may also have a profound impact on warming ocean temperatures under the ice shelves along the coastline of West and East Antarctic.

Ingeniously beating swords into ploughshares, Australian scientists have adapted an ageing British torpedo to measure the thickness of the Antarctic ice shelf as it zips along under the ice.

The ice under the front of the shelf is melting at a rate of about 3.3 feet (1 meter) per year, so the creatures must be burrowing to stay inside the ice, Rack said.

Rack and his team drilled a hole through the 890 - foot - thick (270 meters) ice shelf and lowered down a robotic vehicle known as the SCINI ROV (Submersible Capable of under - Ice Navigation and Imaging - Remotely Operated Vehicle) on a tethice shelf and lowered down a robotic vehicle known as the SCINI ROV (Submersible Capable of under - Ice Navigation and Imaging - Remotely Operated Vehicle) on a tethIce Navigation and Imaging - Remotely Operated Vehicle) on a tether.

By the second half of this century, rising air temperatures above the Weddell Sea could set off a self - amplifying meltwater feedback cycle under the Filchner - Ronne Ice Shelf, ultimately causing the second - largest ice shelf in the Antarctic to shrink dramaticalIce Shelf, ultimately causing the second - largest ice shelf in the Antarctic to shrink dramaticalice shelf in the Antarctic to shrink dramatically.

In the study, the researchers use an ice - ocean model created in Bremerhaven to decode the oceanographic and physical processes that could lead to an irreversible inflow of warm water under the ice shelf — a development that has already been observed in the Amundsen Sea.

They are motivated by the humbling realization that our knowledge of undersea life as a whole is only slightly less sketchy than our knowledge of life under those Antarctic ice shelves: Even where the water is not covered by ice, its sheer volume — not to mention the difficulty of seeing and moving through it — means that it is nearly all aqua incognita.

One 2004 NASA - led study found that most of the glaciers they were studying «flow into floating ice shelves over bedrock up to hundreds of meters deeper than previous estimates, providing exit routes for ice from further inland if ice - sheet collapse is under way.»

Now, Bindschadler and other researchers are heading out to fetch some of the first temperature data from under the Pine Island Glacier ice shelf, the outlet of one of the largest and fastest moving glaciers in Antarctica, in hopes of understanding what is happening beneath it.

In the autumn adult krill migrate from offshore and continental shelf areas to inshore habitats where they remain through winter under the protective cover of sea ice [4].

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

The estimates are quite variable because of the difficulty in measuring these things in a difficult part of the world and the complexity of the processes (ice berg calving; under ice shelve melting, snow blowing, under glacier melt etc.).

In contrast, the warm water that is under the floating ice (ice shelf) is a persistent source of heat under just the right place.

When I lowered the cylinder towards the ground, the snow blow off all around me under the pressure of the air jet, almost to signify the melting of the Arctic ice shelf because of the Carbon emissions generated somewhere else.

This out - flow of water from under the ice pulls in more deep water to melt more ice from the bottom of the ice shelf.

Life Under the Polar Ice: A team of Georgia Tech scientists deploys an ocean robot under the Antarctic ice shelf http://ocean.gatech.edu/faculty-news/life-under-polar-Under the Polar Ice: A team of Georgia Tech scientists deploys an ocean robot under the Antarctic ice shelf http://ocean.gatech.edu/faculty-news/life-under-polar-icIce: A team of Georgia Tech scientists deploys an ocean robot under the Antarctic ice shelf http://ocean.gatech.edu/faculty-news/life-under-polar-under the Antarctic ice shelf http://ocean.gatech.edu/faculty-news/life-under-polar-icice shelf http://ocean.gatech.edu/faculty-news/life-under-polar-under-polar-iceice …

Now we find out NASA has found volcanic heat under western Antarctic ice shelf... and the loss of ice there is NOT from «climate change» but from Pele.

She suggests that future shelf stability studies should consider the role of the ocean's influence, like the effects of warm water pulses flowing under the Cosgrove Ice Shelf.

Whereas the simulations for March and June are all quite similar, the September sea ice concentration of the central Arctic Ocean is significantly lower under conditions with a closed Bering Strait and half - flooded shelf seas (Fig. 8, Supplementary Fig. 9).

But deep water production by convection may be less, depending on how much NADW is Arctic in origin and how much is simply recirculated Antarctic bottom water (extremely dense water, formed as brine under the sea ice around polynas offshore of Antarctica and sliding down the continental shelf into the depths without much mixing, creates a giant pool of dense water extending all the way up the bottom of the Atlantic to about 60 ° N).

Large regions of the seabed around the Greenland and Antarctic ice sheets are undersampled for water depth, including most regions under ice shelves.

The scientists detected a similar high rate of basal melting under six small ice shelves along East Antarctica, a region not as well known because of a scarcity of measurements.

The large floating ice shelves are susceptible to bottom melting but, except for Petermann Glacier, we have no observations of the process or that more warm water is penetrating under these ice shelves.

«Only one - fifth of the heat under the ice shelf is actually converted to ice melt,» Bindschandler said.

The break - up of ice shelves can also leave huge ice cliffs 1,000 m high towering over the ocean, which then collapse under their own weight, pushing up sea level even further.

Colder surface ocean waters decreased the rate of melting under the Pine Island Glacier ice shelf in 2012.

Holland says that increased pressure gradients and strengthened westerly winds may also account for the influx of warm water under the West Antarctic ice shelves.

Chloride = 31,000 p.p.m. (de-icing agents) trapped under the ice, is causing the bottom of the ice shelf to thaw, resulting in continuous thinning and acceleration of glacial melt (under water glacier cutting).

put this on the back shelf right next to global warming melted the ice cap and NYC is under a foot of water

Payne, A. J., P. R. Holland, A. P. Shepherd, I. C. Rutt, A. Jenkins, and I. Joughin,» Numerical modeling of ocean - ice interactions under Pine Island Bay's ice shelf», J. Geophys.