Sentences with phrase «as glaciers retreat»

As glaciers retreat, Demuth said the resilience is reduced, affecting both natural systems such as the way ecosystems function and human systems such as irrigation, hydropower and water for mining projects.

Over long periods, glacial response to climate change becomes obvious as glaciers retreat and, in some cases, disappear.

«As the glaciers retreat, they can not escape the reach of the ocean, and the warm water will keep melting them even more rapidly,» NASA said in a release.

As the glaciers retreat, the temperature of the Earth rises slowly and the glaciers retreat still faster (as long as the Arctic Ocean remains frozen).

So as the glaciers retreat and the body of surviving ice dwindles, some of these reservoirs, too, are at risk.

As glaciers retreat, the ground loses its insulation and becomes more vulnerable to the climate.

As these glaciers retreat due to global warming (see Chapter 1), river flows are increased in the short term, but the contribution of glacier melt will gradually decrease over the next few decades.

Sea levels have been creeping up for the past 50 years, as glaciers retreat and icecaps melt, and as oceans expand with increasing atmospheric temperatures.

That means that as these glaciers retreat, their fronts will remain in contact with warm ocean water that melts ice, rather than hitting higher ground anytime soon.

«There's no question that as glaciers retreat, more ground will become available for exploration and more discoveries could be made in that part of the world,» said Fronk.

But some of the debris, like boulders, drops out and is left behind as the glacier retreats.

As soon as the glacier retreated, however, they were exposed to the sun.

They found that most of the DNA in living Europeans originated in three major migrations, starting with hunter - gatherers who came from the Middle East as the glaciers retreated 19,000 to 14,000 years ago.

Published literature shows dramatic shifts in species» ranges as glaciers retreated, but little evidence of mass extinctions during that period (1).

But as the glaciers retreated, sinkholes and springs formed around Germany's upper Danube, connecting the river to extensive caves and streams 250 kilometers below.

As the glaciers retreated some 12, 000 years ago, Native Americans began inhabiting the.

As the glaciers retreated global sea level rose and new limestones were formed.

But look at, say, Wisconsin, with many meters of loess blown there as the glaciers retreated, then populated as plants took over the area, for ten thousand years.

As a glacier retreats its area available for melting declines and so does glacier runoff in the summer.

As the glacier retreat was more extensive in the period ending 1200 it is likely the oceanic water levels were higher than around 1600, or than they are today.

They then turned to the glacial lakes − bodies of water left behind as a glacier retreats.

By studying rocky debris piled up during the Little Ice Age and then left behind as the glaciers retreated after 1750 the researchers have been able to chart their progress.

In an interview, the late climate science pioneer, Dr. Reid Bryson even reported about the remains of a medieval silver mine, which became exposed as a glacier retreated.

Mike, I have long felt that a decrease in cloudiness better explains such things as glacier retreat than the small increase in global average temperature.

Not exact matches

It's not exactly cheery viewing, as most of the animation involves deforestation, drying rivers and retreating glaciers, but you also see the irrigation of deserts in the Middle East and just the onward march of humanity in general.

Some of Greenland's glaciers, such as Mogens North (top), have retreated rapidly, while others, such as Skinfaxe (bottom), remain relatively stable.

The modern lakes are the remnants of a giant prehistoric lake, known as glacial Lake Peace, which covered much of the area between the retreating glaciers.

Today, as warming waters caused by climate change flow underneath the floating ice shelves in Pine Island Bay, the Antarctic Ice Sheet is once again at risk of losing mass from rapidly retreating glaciers.

Thousands of marks on the Antarctic seafloor, caused by icebergs which broke free from glaciers more than ten thousand years ago, show how part of the Antarctic Ice Sheet retreated rapidly at the end of the last ice age as it balanced precariously on sloping ground and became unstable.

The new research suggests that nearly 11 percent of the glaciers around Antarctica as a whole are retreating at a faster pace today.

The retreat is especially severe in West Antarctica, widely acknowledged as the most vulnerable part of the continent and the region whose glaciers are losing the most ice.

The amount of carbon dioxide has risen and fallen a bit, coinciding with the spread and retreat of glaciers as ice ages have come and gone.

After a brief respite, the Younger Dryas, between 12,800 to 11,500 years ago, froze Europe solid within a matter of months — probably as a result of meltwater from retreating glaciers shutting down the Atlantic Ocean's «conveyor - belt» current, although a cometary impact has also been blamed.

«If we could look back at this region of Antarctica in the 1940s and 1830s, we would find that the regional climate would look a lot like it does today, and I think we also would find the glaciers retreating much as they are today,» said Steig, lead author of a paper on the findings published online April 14 in Nature Geoscience.

But the need for pigment to provide this extra protection waned as modern human populations migrated northward over the past 60,000 years or so, while the need to absorb UVB light became greater, particularly for those humans who migrated to the far North behind retreating glaciers less than 10,000 years ago.

But the need for pigment to provide this extra protection waned as modern human populations migrated northward over the past 60,000 years or so, Elias said, while the need to absorb UVB light became greater, particularly for those humans who migrated to the far North behind retreating glaciers less than 10,000 years ago.

Recent research has fingered the ocean as a trigger for tidewater glacier retreats.

When the glacier starts to retreat, the frontal moraines are no longer protected by the ice, and a sort of «geological chronometer» is triggered, as the rocks begin to accumulate beryllium - 10 and helium - 3 produced by particles resulting from cosmic rays.

As elsewhere on the planet, tropical glaciers (located on either side of the equator between 23 ° N and 23 ° S) have been retreating since the Last Glacial Maximum around 20,000 years ago.

When the climate warmed in the late 1800s, it triggered the retreat phase of the tidewater glacier cycle as warm ocean water melted the ice.

As part of the study, Tripati and her colleagues also investigated what sets the past and present height of glaciers in the tropics, and why they have been retreating.

As glaciers grew and retreated, sea levels rose and fell.

Meltwater from retreating glaciers, seasonal snowfall and rain carried topsoil and sand from as far away as the Canadian prairies.

The effects of global warming can be seen in retreating glaciers, threatened animals and plants as well as rising seas.

As the north warmed, glaciers retreated, the winds returned to normal conditions, and the north became cooler once again, completing the cycle

«It means that these animals were here before the glaciers covered central Iowa, and that they returned for a short time after the glaciers retreated as well,» Hill said.

«As the glacier's calving front retreats into deeper regions, it loses ice — the ice in front that is holding back the flow — causing it to speed up,» Joughin clarifies.

And, worryingly, the research suggests that as these glaciers melt and retreat backward, the shape of the seabed will continue to expose many of them to warm ocean water for hundreds of miles as the ice moves inland.

If they begin to melt, however — particularly as they're exposed to warmer ocean water — the shelves become thinner and the grounding line begins to retreat backward, causing the glacier to become less stable and making the ice shelf more likely to break.

This sector of Antarctica has long been identified as the most vulnerable to changes in climate and, according to recent assessments, its glaciers may have passed a point of irreversible retreat.