Sentences with phrase «ice margin at»

If you measure the latitude of the ice margin at just one point, you can make a very reasonable estimate of the total extent.

Straddled along the sea - ice margin at the northernmost extension of the warm Gulf Stream, climate on the archipelago is highly sensitive to change: Svalbard is one of the fastest - warming places on the planet.

Not exact matches

Thinking outside the cup, Rosati Ice pioneered the two - quart Party Pail which provides larger quantities of product at a lower price point for the consumer and a higher margin for the stores.

Additionally, the Zachariae glacier at the ice sheet margin began its retreat and moved into deeper water, which exacerbated the melt, said Bevis.

This exposed tall ice «cliffs» at their margin with an unstable height, and resulted in rapid retreat of the glaciers from marine ice cliff instability between 12,000 and 11,000 years ago.

«The beds at the margins of the ice sheet... are probably one of the least explored parts of Earth's surface,» said Ian Howat, a glaciologist at Ohio State University who did not participate in the research.

Methane hydrates, also known as «burning ice», occur at all ocean margins.

«The effort to use the old photographs to learn how the margins of the ice sheet have changed is wonderful,» said Richard Alley, a glaciologist at Pennsylvania State University.

If more ice is lost at the margins than gained at the core, the ice sheet shrinks, ultimately affecting albedo as (depending on the underlying geography) lakes form, some rockbed is exposed and areas are reconquered by the ocean.

He told the Climate News Network: «While the sparse existing observations do not indicate warmer water inflow towards the Wilkes ice sheet margin at present, there is no reason why changes similar to those in West Antarctica could not also occur here.»

So if the margin was lost without ice loss at the center, the new margin having lost its support would become very unstable and the whole ice sheet would to have to lose volume to establish a new equilibrium.

Winter snow tends to accumulate in the crevasses and gullies, so that at the end of winter there is already ice at the surface — so the melt season very close to the margin is very long.

«We were able to see for the first time that there is widespread thinning at the margin of the Greenland ice sheet throughout this region.

2) the Antarctic ice forms at the margins of a largely glaciated continent surrounded by a powerful circular ocean current, whereas the Arctic ice forms at the margins of a ocean basin largely surrounded by continental landmasses; and that

Note that both the Ross and the Ronnie ice shelves have not changed temperature, except right at the margin.

I believe that what the phrase is trying to get at is either the acceleration relative to the pause in the 1950 - 1970 period, or the acceleration in accumulation of noticeable consequences — worldwide glacier melt, sea ice retreat, earlier onset of springtime, (possibly) increasingly intense hurricanes, Larsen - B breakup, melting of Greenland along the margins, etc..

However, the grounding line of ice of the thickness of PIG is not as responsive as say the thin ice at the margin of Petermann Glacier in Greenland or Wilkins Ice Sheice of the thickness of PIG is not as responsive as say the thin ice at the margin of Petermann Glacier in Greenland or Wilkins Ice Sheice at the margin of Petermann Glacier in Greenland or Wilkins Ice SheIce Shelf.

The ice sheet is almost 2,400 kilometres long in a north - south direction, and its greatest width is 1,100 kilometres at a latitude of 77 ° N, near its northern margin.

Determining the mechanisms and feedbacks involved in climate change at the end of the last ice age therefore requires an understanding of the relationship between the southern margin ice retreat and connected meltwater events to atmospheric and sea surface temperatures, ice - rafting Heinrich events, sea level rise, and atmospheric greenhouse gas concentrations.

This is why extent is such a useful measure: it only needs observations at the ice margin, and is robust even with sparse observations.

The increased amount of fracturing, and possibly changes at the ice shelf margins (loss of connection with the coastline) and wave action (flexing the shelf a slight amount), led to the break - up of the shelf.

These typically occurred when a rift at the heavily fractured shear margin propagated across the width of the ice shelf.

Measuring the distance apart and speed of 2 satellites in space orbiting the earth to the width of a human hair with no margin for error [damn those drift recalculations], and taking into account unknown factors with respect to the true values for water depth, water weight at different salt concentrations, ice depth magma flows, volcanic activity etc [ie making a lot of guesses], plus taking human motivation on board [like CO2 increase must melt ice surely] can give you an accurate measurement of the volume ice in Antarctica.

At the very margins, this doesn't matter, what does matter is where ice is retained all summer but a lot of the top ice melts off, so the area doesn't change but the volume does.

All glaciers at all times lose ice at the margins and gain ice at their source.

The fourth core, Core PS2138 - 2, is located at the Barents Sea continental margin, an area with a seasonal sea ice cover and a strong influence of warm Atlantic Water inflow today (Fig. 1; ca. 4/10 summer sea ice concentration).

Whereas at the three sites from the central Arctic Ocean an extended to perennial sea ice cover was probably predominant, sea ice conditions were much more variable along the northern Barents Sea continental margin as reflected in the data of Core PS2138 - 2 (Fig. 2d).

Cartoon of different paleoenvironmental scenarios of sea ice and ice sheet extent at the East Siberian Continental Margin / Southern Lomonosov Ridge area.

At the Barents Sea continental margin (i.e., at site PS2138 - 2) strongly influenced by Atlantic Water inflow, minimum summer sea ice concentrations of about 25 % were simulated for the 125 ka time slice (Fig. 8dAt the Barents Sea continental margin (i.e., at site PS2138 - 2) strongly influenced by Atlantic Water inflow, minimum summer sea ice concentrations of about 25 % were simulated for the 125 ka time slice (Fig. 8dat site PS2138 - 2) strongly influenced by Atlantic Water inflow, minimum summer sea ice concentrations of about 25 % were simulated for the 125 ka time slice (Fig. 8d).

While the winter / spring 2008 sea - ice extent has rebounded from the 2007 negative mega-anomaly, the age - class distribution at present is negatively skewed compared to satellite climatology and even the values for 2007, as is ice concentration within the ice - ocean margin that defines extent.

Jonathan Bamber, director of the Bristol Glaciology Centre at the University of Bristol, UK, says: «We have already seen an unusually early start to melting around the margins of Greenland in 2016 and the new findings from NSIDC of exceptionally low sea ice extent for May and the lowest Northern Hemisphere snow cover in April for 50 years is in line with the longer - term, decadal trends for the Arctic as a whole,» said

There are a few settlements down - valley of large terrestrially - terminating Greenland outlets, but even these are mostly at least 3 km from the present ice margins.

These observations show that fairly small changes at the grounding line can be transmitted far inland, highlighting the sensitivity of ice dynamics near the marine margin.

At present, most mass loss from ice sheets occurs at their marine margins, through iceberg production and melting by the oceaAt present, most mass loss from ice sheets occurs at their marine margins, through iceberg production and melting by the oceaat their marine margins, through iceberg production and melting by the ocean.

«This implies that changes at the margin can affect the mass balance deep in the centre of the ice sheet,» said Dr Khan.

«As a glacier goes afloat, becoming an ice shelf, its flow is resisted partly by the margins, which are the bay walls or the seams where two glaciers merge,» Ginny Catania, assistant professor at UTIG said in a statement.

May I remind you that Antarctica ice sheet has net ice sheet loss from loss at margins?

At times, its southern margin included the modern sites of New York City and Chicago, and then followed quite precisely the present course of the Missouri River up to the northern slopes of the Cypress Hills, beyond which it merged with the Cordilleran Ice Sheet.

The evidence comes from a remarkable find at the margins of the Quelccaya ice cap in Peru, the world's largest tropical ice sheet.

«Since most ice sheet erosion occurs at the margin of the ice sheet, that indicated times when the ice sheet retreated,» Cook said.

Negative AO reduces ice extent at the margins in the North Atlantic