Sentences with phrase «ice mass since»

«Our investigations show that uplift of the sea floor in this region, caused by the melting of the ice masses since the end of the last ice age, is probably the reason for the dissolution of methane hydrate.»

Not exact matches

But gravity - measuring satellites have shown that the continent's ice sheets have been losing mass since at least 2002.

Researchers were astounded when, in the fall of 2007, they discovered that the year - round ice pack in the Arctic Ocean had lost some 20 percent of its mass in just two years, setting a new record low since satellite imagery began documenting the terrain in 1978.

The sun and moon tug on the planet, while the drift of continents, changes in ocean currents, and the rebounding of the crust since the retreat of ice age glaciers all shift mass around, altering Earth's moment of inertia and therefore its spin.

To better understand and anticipate changes in sea level rise, scientists have sought to quantify how much snow falls on the ice sheet in any given year, and where, since snow is the primary source of the ice sheet's mass.

Even NASA's gravity - sensing GRACE satellites, which have provided stunning ice mass data since their launch in 2002, are nearing the end of their planned life.

And since you have missed this acceleration you have assumed that the rate will remain at 3.3 mm / year for the rest of this century, despite ongoing observations of increases in ice mass loss in Greenland and parts of Antarctica.

A pedantic treatment would use a logistics function since we know there is only so much ice sheet mass to be lost.

The real Greenland ice has not started to lose mass only since 1990, it takes time until the meltwater spreads and accumulates, and also the ocean circulation will react with delay and inertia.

Glaciers and ice caps in Arctic Canada are continuing to lose mass at a rate that has been increasing since 1987, reflecting a trend towards warmer summer air temperatures and longer melt seasons.

We have joined forces with the Greenland expert Jason Box who has reconstructed the mass balance of the Greenland ice sheet since 1840 (Fig. 6 of our paper, see also his blog).

His team combined different sets of measurements which used stakes and holes drilled into the ice to record the change in mass of more than 300 glaciers since the 1940s.

So we see a long term trend of accelerating ice mass loss since the 1970s.

The long term trend since the 1970s is accelerating ice mass loss.

The snow and ice masses in the world's leading mountain ranges and the water they store are taken for granted simply because they have been there since agriculture began.

The ongoing flux of mantle material into areas which have experienced large - scale ice - mass loss since the LGM looks like mass gain to GRACE.

In 2010 Greenland lost more surface ice mass than in any other year since modern observations began, researchers of City College New York reported on Friday.

The huge mass of arctic ice has been responding to the mexican wave since we started watching just after PDO flipped in 1975.

Post-glacial rebound - The vertical movement of the land and sea floor following the reduction of the load of an ice mass, for example, since the Last Glacial Maximum (21 ka).

This week in the journal Nature, Csatho writes a «News and Views» analysis that comments on the latest research in this area: A new study in Nature by Kristian K. Kjeldsen, Niels J. Korsgaard, Kurt H. Kjær and colleagues, who used aerial photographs, remote - sensing observations and geological evidence to estimate the Greenland Ice Sheet's mass loss during three time periods since the start of the 20th century: 1900 - 83, 1983 to 2003 and 2003 - 10.

Since ice can sublime and we know from the discussions on glaciers that they can grow or shrink with percipitation, simple mass would not be appropriate.

They should not bring much rise in the sea level, since floating ice obeys Archimedes's principle and displaces its own mass of water.

Since its launch in 2002, GRACE has provided a continuous record of changes in the mass of the Earth's ice sheets.

Satellite images taken since 1979 show that the extent of ice mass over the other 90 % has increased.

Why does the GRACE satellite data show a rather fast decline in ice mass for Antarctica since 2002?

And in Greenland, the ice sheet continued to lose mass this year, as it has for every year since satellite - based measurements began there in 2002, according to the report.

What the report says about Alaskan glaciers and climate change: The collective ice mass of all Arctic glaciers has decreased every year since 1984, with significant losses in Alaska.

Fluctuations in the mass of the Greenland and Antarctic ice sheets are of considerable societal importance as they impact directly on global sea levels: since 1901, ice losses from Antarctica and Greenland, alongside the melting of small glaciers and ice caps and thermal expansion of the oceans, have caused global sea levels to rise at an average rate of 1.7 mm / yr.

Mean sea level (MSL) evolution has a direct impact on coastal areas and is a crucial index of climate change since it reflects both the amount of heat added in the ocean and the mass loss due to land ice melt (e.g. IPCC, 2013; Dieng et al., 2017) Long - term and inter-annual variations of the sea level are observed at global and regional scales.

and the overall ice mass of the planet — if you take the Arctic, Greenland, and the Antarctic together — has shown no trend whatsoever, up or down in the last 50 years since we have been keeping detailed records.

Accelerating mass loss from Antarctic and Greenland ice sheets since 1992 [Rignot et al., 2011] is an additional source of the recent sea level acceleration.»

Daniel Cressey; cross-posted from The Great Beyond The ice sheet covering east Antarctica may have been melting since 2006, according to new research, contradicting previous suggestions that it has remained stable or even grown in mass.

This represents a net loss of ice thickness exceeding 14 m or 20 - 40 % of their total volume since 1984 due to negative mass balances.

The cause would be melting of ice on Greenland and other land masses, since the melting of floating ice would not change sea level.

Velicogna and Wahr use data from the «Gravity Recovery and Climate Experiment» (GRACE) satellites to show that the Antarctic ice sheet has been losing mass at a rate of 150 + / - 80 km3 each year since 2002.

Since 2003, the detailed gravity measurements from Gravity Recovery and Climate Experiment (GRACE) of the change in glacial land ice and water show an increase in mass of the ocean.

And «[b] oth ice sheets have seen an acceleration of ice mass loss since 2009,» the agency adds.