Sentences with phrase «left by the glaciers»

As the climate continued to change, not enough snow fell to maintain the glaciers, and the holes left by the glaciers could have caught windblown snow and preserved it in drifts.

In addition to the postglacial sinking due to the glacial «forebulge» slowly flowing back into the «hole» left by the glaciers, a broad zone from southern England through the Netherlands into northern Germany and Poland has been slowly sinking all through the Quaternary.

Not exact matches

When that glacier recedes, it leaves a basin, enclosed by the moraine and remaining glacial ice, which fills with meltwater.

In a new study, Stuart Thomson, a geologist at the University of Arizona (UA) in Tucson, looked into the past by decoding sands deposited by the river, and the messy piles left behind by the glacier.

The cosmic rays produce rare chemicals in the rocks, and by analyzing the concentrations of those chemical isotopes, researchers at Schaefer's lab are able to determine just how long ago the rocks were first exposed to the sun — and thus when they were left behind by the glacier.

They piled boulders left by ancient glaciers into two large rings, put black amphibolite rocks on top, layered the wall with charcoal and burned it.

Since 1936, the glaciers have shrunk by some 16 square kilometres, and today less than 3 square kilometres of ice is left.

As glaciers recede, they leave behind lakes typically dammed by bedrock or glacial debris.

That view got a big boost in 2003 when Brown geologist Jim Head and Boston University's David Marchant showed that terrain around Arsia Mons looks strikingly similar to landforms left by receding glaciers in the Dry Valleys of Antarctica.

A moraine is material left behind by a moving glacier.

The erratic boulders, till, drumlins, eskers, fjords, kettle lakes, moraines, cirques, horns, etc., are typical features left behind by the glaciers.

In a new study out last month in the journal Nature, a team of scientists from Cambridge and Sweden point to evidence from thousands of scratches left by ancient icebergs on the ocean floor, indicating that Pine Island's glaciers shattered in a relatively short amount of time at the end of the last ice age.

Eventually you break into the vast moraine left behind by the rapidly receding glacier.

This takes into account that glaciers slowly disappear and therefore stop contributing — the total amount of glacier ice left is actually only enough to raise sea level by 15 - 37 cm.

Several miles long, the island was once thought to be the tip of a peninsula halfway up Greenland's remote east coast but a glacier joining it to the mainland has melted away completely, leaving it surrounded by sea.

Rocks that were left behind by the ancient glacier were analyzed to determine when the glacier retreated.

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.

Sea levels are rising (ask the Mayor of Miami who has spent tax monies to raise road levels), we've had 15 of the hottest years eve measured, more precipitation is coming down in heavy doses (think Houston), we're seeing more floods and drought than ever before (consistent with predictions), the oceans are measuring warmer, lake ice in North America is thawing sooner (where it happens in northern states and Canada), most glaciers are shrinking, early spring snowpacks out west have declined since the 1950's, growing seasons are longer throughout the plains, bird wintering ranges have moved north, leaf and bloom dates recorded by Thoreau in Walden have shifted in that area, insect populations that used to have one egg - larva - adult cycle in the summer now have two, the list goes on and on.

Based upon signs left by old glaciers, researchers say the climate was already cold when the Norse arrived — and that climate thus probably played little role in their mysterious demise some 400 years later.

The total area of glacier ice left including the stagnant section by the northern terminus is 0.9 km2 less than 30 % of the area of just 30 years ago.

In 2002, the Larsen B ice shelf collapsed; in 2003, the World Glacial Monitoring Service reported that «The recent increase in the rates of ice loss over reduced glacier surface areas as compared with earlier losses related to larger surface areas (cf. the thorough revision of available data by Dyurgerov, 2002) becomes even more pronounced and leaves no doubt about the accelerating change in climatic conditions.»

Meanwhile, rapidly melting glaciers and ice sheets have caused sea levels to rise by 3.2 millimeters a year since 1995, which some predict could leave New Orleans submerged by the end of the century.

Thus we have berm, a lovely word for a longish mound used for landscaping; pingos, if you're up north, where they'll be rather large conical upthrusts of ice covered with some soil (and, of course, given the yin / yang of this business, further south also a circular depression typically filled with water); further south still you'll trip over drumlins, formations made up of till left by receding glaciers, and not to be confused with eskers, which seem to have formed within holes inside glacier.