Sentences with phrase «of glacier movement»

Breakup of an ice shelf (Larsen) leads to a speedup of glacier movement: Rignot et al. (2004), Scambos et al. (2004)(who also note lubrication by percolating water, see following note).

Not exact matches

Just over 1 % of our planet's glaciers — some 2300 in all — are known to undergo these precipitous movements, though the number is likely to rise as glaciers come under closer surveillance by remote sensing.

Studying surging glaciers could also offer insights into grander - scale ice flows with global consequences: the movements of the ice sheets in Antarctica and Greenland, which can change abruptly, altering the ice discharges that affect sea level.

In the Middle Land of speed, we can detect objects moving at a walking or running pace, but the glacially slow movement of continents (and glaciers) and the mind - bogglingly fast speed of light are imperceptible.

An ambitious new mapping project has given scientists one of their most complete looks yet at the movement of glaciers all around Antarctica.

The movement of glaciers can compete with the internal buildup and develop a feedback process that is very rapid and ferocious.

A glaciologist rather than a biologist, he wanted to investigate a question critical to climate change: Do subglacial rivers and lakes lubricate the movement of ice over land — and might they somehow accelerate a glacier's flow into the ocean, triggering rapid sea level rise?

With so many instruments on the Yahtse, researchers have a unique opportunity to monitor changes along the length of the glacier and discover how, for example, local changes in ocean temperature and currents relate to movement further up the glacier.

GPS is being used to create a detailed and comprehensive portrait of nearly all Earth's dynamic surfaces, including the zones where tectonic plates meet, the slippage along earthquake faults, and the movement of glaciers.

Finding that record was a challenge because glaciers moving on land tend to wipe out and cover up previous movements of the glacier, Licht said.

He says previous predictive models of Greenland's ice loss did not adequately take into account the faster movement of its southern glaciers, which is accelerating the amount of ice entering the ocean: «Greenland is probably going to contribute more to sea level rise, and faster than predicted by these models.»

In the second report, researchers led by Eric Rignot of NASA's Jet Propulsion Laboratory used remote sensing and radar data to calculate the glaciers» movement.

By reconstructing their evolutionary history over the past 2 million years, including major climatic glacier movements, geology (uplifting of the Tibetan plateau) and retreats likely drove population isolation and demography.

The formation, size and movement of glaciers can provide valuable data, he said, because these characteristics reflect current and historic changes in temperature, precipitation or both.

Ice movement is dominated by the motion of glaciers, whose activity is determined by a number of processes.

The pressures exerted from the interior of the glacier will force movement into those areas with the least resistance.

Glacier - ice shelf interactions: In a stable glacier - ice shelf system, the glacier's downhill movement is offset by the buoyant force of the water on the front of the shelf.

Much of the country's geography has been dictated by the movements of pre-historic glaciers; most notably in the creation of Norway's iconic fjords.

In a kaleidoscopic movement of acoustic universes, visual projections, props and instruments brought to life by Joan Jonas, the performance retraces the source of the work — Under the Glacier (1968), by the writer Halldór Laxness — which narrates tales of glaciers and miraculous aspects of the natural world.

During this experience the artist was profoundly inspired by the movements of ice viewed from the ship including melting glaciers and the icy expanses of the polar ice caps.

Slow, powerful visual rhythms imbue Stern's rich forms with the weighty feel of geologic time, like the movement of glaciers in exotic hues.

The conclusions of -.3 C are not consistent with historical evidence, ice core analysis, crude 16th century thermometers, or glacier movement that suggest NH cooling of -2 C during Maunder.

The loss of significant portions of the ice shelf that retarded the seaward movement seems to be absent in certain areas and that might presage a more rapid deterioration of the glaciers there.

Obviously in the short term the ZnJ effects will give rise to variations in the rate of movement of the glacier, but it is the longer term effects relating to energy transfer that worry me.

More on Melting Glaciers: A Grim Future for Yosemite's Glaciers Call 07758225698 to Hear a Glacier Melting Melting Glaciers Could Hike Price Of Our Daily Bread Global Warming Melting Glaciers, Shrinking Harvests in China and India «Rubber» Duckies Deployed to Track Glacier Movements

Black carbon disrupts the South Asian monsoon (by altering the land - sea temperature gradient that drives the movement of moist air), helps melt the Greenland ice sheet (by increasing the solar energy the darkened ice absorbs), and accelerates the retreat of Himalayan glaciers.

Both are as a result of glacial isostatic adjustment, the ongoing movement of land once burdened by ice - age glaciers.

A great deal of the work I have been doing recently concerns land conditions and the movements of glaciers, so although not specifically about sea levels, have a very direct impact on them.

According to the new study — Fast retreat of Zachariæ Isstrøm, northeast Greenland — published today in Science, the glacier's rate of seaward movement has tripled in velocity even as the pace of ice thinning along its grounding line doubled:

These glaciers included Pope, Smith and Kohler — which have seen increasing instability and rates of seaward movement during recent years.

An ambitious new mapping project has given scientists one of their most complete looks yet at the movement of glaciers all around Antarctica.

Another mainstay of the climate change alarmism movement is that glaciers are melting, sea levels are rising, and the oceans are acidifying, which will disrupt ocean life and the food chain.

Why do precise measurements of glacier motion often show stick - slip behaviour, that is, hours and hours of near motionlessness punctuated by half - hours of rapid movement?

Research published last spring in Nature Climate Change made a convincing case that that trek is now engaged in a 40 km retreat, a movement that will only continue to accelerate as warm water laps at the shallow leading edge of the glacier and as the glacier very slowly increases its angle of descent off of the continent's land shelf.

Of course glaciers don't change direction overnight, but IF the current trend continues and CET falls even further towards the zero anomaly line it will be interesting to see the effects on glacial movements (if any) Generally the glaciers in Switzerland and Austria seem the most responsive.»

Based on satellite observations of land - locked glaciers in Greenland, the team discovered that though there was a quickening of ice sheet movement in all years, in the warmest ones a slowdown of movement occurred more quickly.

The continent is flanked by 54 major ice shelves, which act as brakes slowing the movement of ice in land - based glaciers out to sea.

Scientists analyzing satellite data were astonished to discover the size of the vast lakes and river systems flowing beneath the Antarctic ice sheets, which may lubricate the movement of these glaciers as they flow into the surrounding sea.

So, the basic conventional view of how the glacier moves towards the sea is correct, but the impetus for that movement is different based on Schoof's findings.

© Cengage Learning World's largest island — 80 % covered by glaciers 10 % of the world's fresh water Glacial melting and movement accelerating.

Glaciologists are people who study and analyze the movement and physical properties of glaciers and ice.