Sentences with phrase «of ice mass»

This is confirmed by gravity satellite measurements over the past 9 years which find that the rate of ice mass loss has doubled over the last 9 years.

The blue line / crosses show monthly values of ice mass.

For example, climate change has already led to: more negative than positive impacts to crops, such as wheat and maize; coral bleaching and species range shifts; more frequent heat waves; coastal flooding; increased tree die - off in various regions; and a significant loss of ice mass in places like Greenland and Antarctica.

Joughin et al. (2010) applied a numerical ice sheet model to predicting the future of PIG, their model suggested ongoing loss of ice mass from PIG, with a maximum rate of global sea level rise of 2.7 cm per century.

The backdrop to the renewed interest in asserting territorial claims on the Arctic and Antarctic by states such as Canada, the United States, Russia and the United Kingdom is that global warming, and in particular the warming of oceans, is leading to accelerating erosion of the ice mass at both poles.

Citation: Khan, S. A., J. Wahr, M. Bevis, I. Velicogna, and E. Kendrick (2010), Spread of ice mass loss into northwest Greenland observed by GRACE and GPS, Geophys.

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

«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.»

Here, there is weakening of local gravity and enhancing of rebound of the Earth's crust out of the ocean, both caused by the rapid removal of ice mass.

Meltwater reaches the base of ice sheets through basal melting from geothermal heating and by ice melting under pressure from the weight of the ice mass above.

«We think we now have identified a new tool, and that's the polar motion data, to be able to put bounds on how large the natural variability may be in terms of ice mass....

Thanks to GRACE satellite monitoring, there is a good gravity record of ice mass loss from Greenland from the period 2002 - present.

The model was then able to simulate surface temperatures to within 2 to 4ºC of observations and to provide a good simulation of the ice mass balance (snow accumulation), with both aspects being better than at standard resolution.

Thinning of its ice mass is evaluated at 17 per cent,» the study says.

Figure 2: Time series of ice mass changes for the Greenland ice sheet estimated from GRACE monthly mass solutions for the period from April 2002 to February 2009.

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).

[Such] networks can therefore mitigate the loss of ice mass measurements following the anticipated termination of the GRACE satellite mission.

It was evidence of the laws of physics at play on the variably floating portion of the ice mass at a breaking hinge point near the non-boiant land born art of the entire ice feature.

Over the past quarter - century, both the extent of melting and the length of the melt season on the Greenland ice sheet have been growing, as local temperatures have risen.6 Satellites measure the extent of melting by differentiating between areas of the ice mass that are fully frozen and those with surface meltwater.

During that break - up, 3,200 square kilometers (1,235 square miles) of ice disintegrated within a few days «due to mechanical instabilities of the ice masses triggered by climate warming,» according to the European Space Agency.

The most recent calculations of ice mass balance in the antarctic also do indicate loss of ice, though nothing close to the changes seen in the arctic sea ice and Greenland ice sheet.

Neil also downplayed the human role in the rapid Arctic sea ice decline, which has seen a loss of three quarters of its ice mass over the past three decades.

Rather than ancient snow pack, only an empty rock - strewn riverbed remains: the glacier has lost 320 vertical feet of ice mass in the intervening years in what researchers describe as a striking effect of global warming.

We can estimate the potential magnitude of the ice mass biases by noting that if the average velocity prediction bias of ~ 5 mm / yr evident in Figure 5 is developed over ~ 2 × 10 ^ 6 km2, an area somewhat smaller than that of West Antarctica, this would cause an apparent but spurious ice loss of ~ 33 Gt yr - 1, which is a significant fraction of all published ice mass rates derived from GRACE [Velicogna and Wahr, 2006; Chen et al., 2006; Ramillien et al., 2006; Sasgen et al., 2007a].

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

Spread of ice mass loss into northwest Greenland observed by GRACE and GPS.

Indeed, previously scientists thought that the loss of ice mass from Greenland and Antarctica alone was driving a polar shift.

The Smith, Pope and Kohler glaciers flow into the Dotson and Crosson ice shelves in the Amundsen Sea embayment in West Antarctica, the part of the continent with the largest loss of ice mass.

Due to the significant thickness of these ice sheets, global warming analysis typically focuses on the loss of ice mass from the ice sheets increasing sea level rise, and not on a reduction in the surface area of the ice sheets.

News articles by The Times, Time, the Associated Press and others capture the basics in two new papers, one on six West Antarctic glaciers that appear to have nothing holding back eventual disappearance, accepted for publication in Geophysical Research Letters, and the other taking a closer look at one of those ice masses, the Thwaites Glacier, posted online today by the journal Science.

However, net loss of ice mass could occur if dynamical ice discharge dominates the ice sheet mass balance.

In 1996, the rate of ice mass loss had increased to 97 gigatonnes per year.

The end result is the glaciers accelerate seaward, causing dynamic thinning, increased calving, and a large loss of ice mass that continues until a new equilibrium is established.