Sentences with phrase «glacier moved»

By the way, the problem was that he was following the assumption that the continental glacier moved in all places in the same way as it does on a large scale.

Geologists at UC Santa Cruz have now taken a close look at the structure and chemistry of glacial polish and found that it consists of a thin coating smeared onto the rock as the glacier moved over it.

As the glacier moved south toward the future location of New York City, it widened and deepened the Hudson River valley.

When a glacier moves down a valley, it pushes aside rock, soil and debris, creating a moraine, or levee - type horseshoe - shaped structure.

A glacier «acts as sandpaper because it has rocks embedded in its base... so as the glacier moves, it's deepening valleys and smoothing off the tops of hills,» Horenstein says.

According to coauthor Emily Brodsky, professor of Earth and planetary sciences at UC Santa Cruz, this ultrathin coating can help glaciologists better understand the mechanics of how glaciers move, and it provides a potential archive for dating when the material was pasted onto the rock.

20,000 years: Glaciers move relentlessly across the island of Manhattan and its environs, scraping the landscape clean.

As a glacier moves, it grinds the bedrock beneath, creating silt that the glacier's meltwater washes into the lake below.

The shelf was plugging the channel, but once it is gone, the glacier moves more rapidly toward the sea, forming more ice shelf, but removing large amounts of ice from the glacier.

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.

They found that the ice might travel at up to 600 metres an hour, far faster than glaciers move on Earth (Astrophysical Journal Letters, doi.org/cmvc).

This has to do with the physical processes that affect the way ice in a glacier moves and flows out to sea.

Crevasses open up as glaciers move, and are the result of brittle failure of the ice as it slips downslope.

Nine - year - old Jairus Patterson correctly responds that he thinks it's about how glaciers move because the passage talks a lot about how many feet glaciers can move per day.

The shelf was plugging the channel, but once it is gone, the glacier moves more rapidly toward the sea, forming more ice shelf, but removing large amounts of ice from the glacier.

Just as is the case with Arctic sea ice, glaciers moving into the ocean are being melted from underneath by the rapidly warming waters.

Using simple observations of scratches and the «plucking» of rocks on the downside of glacial flow directions, I concluded on my second day in the field that the glaciers moved not towards the competitor's property but FROM the competitor's property.

Fact is glaciers move as rivers do: though generally downhill in a given direction, locally they follow the contours of the local topography.

Some of it was clearly preserved from living things on the ice itself, some of was scraped up as the glaciers moved over old soils, and some of it was soot from fossil fuel combustion or distant forest fires.

Ice sheets and glaciers move in two ways: they slide across the landscape, and they flow.

Glaciers move horizontally as they flow downstream, the study describes, but their floating portions also rise and fall vertically with changes in the tides.

The retreat has been most noticeable at high elevations, driven in large part by warming temperatures contributing directly to melting and indirectly to more precipitation falling as rain rather than snow, in turn increasing the rate at which the glaciers move and increasing the size of glacial lakes, both decreasing ice cover.

«The answer turned out to be huge: about 49 kilometers [30 miles] per year, 70 times faster than those glaciers move today,» Pfeffer says, «and three times faster than we've ever observed an outlet glacier to move.»

Because glaciers move slowly, however, a time lag can occur between the changing climatic conditions and the resulting glacier advance or retreat.

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.

Her work provides an important piece of the puzzle of how glaciers move, what makes them speed up, and how they are contributing to sea level rise as the climate warms.

Not exact matches

In The Christian Century for October 6, 1971, I hazarded some guesses about «The Shape of the Coming Renewal,» suggesting that the growing awakening among young people was only the leading edge of a glacier that would continue to move in steadily until it dominated the American ecclesiastical landscape.

Perhaps not the God of the Old Testament — the glacier has moved a good way since then — but yes, talk of God.

Take one slow moving glacier from 23,000 B.C., add cold winters, long summers and potash rich soil, and you get the American Bottoms of southern Illinois.

India's justification for capturing the glacier was to pre-empt a similar move Pakistan was contemplating.

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

The scientists on Svalbard hope that wiring up the neighboring glaciers will reveal why they move at wildly different rates.

In comparison, it took the Jakobshavn Isbræ ice stream — a southwest Greenland region with a fast - moving glacier that has been a focal point of scientific examination of ice sheet melt — 150 years to retreat 35 kilometers, said Khan.

Located approximately 16 to 2,300 feet below the glacier, the five ocean sensors are connected to a weather station at the surface, creating the first cabled observatory on a floating, moving, and rapidly melting Greenland glacier.

These rapidly - moving glaciers protect Antarctic ice from erosion by ocean waters, which otherwise would raise worldwide sea levels by some 50 feet.

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.

Enkelmann says the glaciers today are wet - based and are moving, very aggressively eroding material around and out, and in the case of her observation, into the Gulf of Alaska.

Existing glaciers grew larger, froze solid, covered the area and did not move.

«By going to all of these individual glaciers, we can get a much better understanding of what has happened and what was moved on the entire mountain range.»

If the ice at the bottom of a glacier melts, the point where it connects to the bedrock moves backward, farther inland, losing ice to the ocean in the process.

But one in northern Pakistan breaks into a gallop with astounding speed and regularity: Khurdopin glacier «surges» every two decades, moving roughly 1,500 times its normal pace.

First, the frictional process of sliding: glaciers are rivers of ice that move («slide») ice from centers of accumulation to oceans, a process that affects climate and water levels.

A tidewater glacier named for French geographer and geologist Emmanuel de Margerie (1862 - 1953), it moves from the mountains to the sea.

Because scientists who've looked to glaciers to study the history of climate on Earth have found that the Northern and Southern hemispheres have not been moving in sync.

About 10,000 years ago, after the glaciers of the Ice Age retreated from the Scandinavian landmass, bands of hunters and fishers moved across the Baltic Sea and into the Finnish wilderness.

Where the ice meets the bedrock at the very bottom of the glacier, the meltwater is exposed to phosphorus - rich rocks that are pulverized by the moving glacier.

«Within a few months» of a breakup, explains glaciologist Ted Scambos of the National Snow and Ice Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.»

The research model predicts slightly elevated heat flux upstream of several fast - flowing glaciers in Greenland, including Jakobshavn Isbræ in the central - west, the fastest moving glacier on Earth.

And she describes sobering trends: The projection that Switzerland will lose more than half of its small glaciers in the next 25 years; the substantial retreat of glaciers from the Antarctic, Patagonia, the Himalayas, Greenland and the Arctic; the disappearance of iconic glaciers in Glacier National Park, Montana, or reduction to chunks of ice that no longer move (by definition, a glacier must be massive enough to move).

By tracking changes in crevasses on the glaciers» surfaces, they calculated the speed at which the ice slabs were moving.