Sentences with phrase «glacial ice at»

The cause of the rise in sea level is guessed to be the melting of glacial ice at a faster rate than it is being replenished.

The Amundsen - Scott South Pole Station sits upon two miles of glacial ice at the bottom of the world.

Not exact matches

Some of the ensuing hikes can be strenuous, aside from the inherent visual rewards, ship personnel greet trekkers at the end of the trudge with a choice of hot chocolate or a generous tumbler of Johnny Walker Red poured over 2,000 year - old glacial ice.

At Scenic Caves you can explore the trails, caves and caverns carved out of the mountain millions of years ago by glacial ice.

The only current ice sheets are Antarctic and Greenland; during the last ice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheets are Antarctic and Greenland; during the last ice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South AmeriIce Sheet covered southern South America.

For instance, in the Tropics the temperature variations were three times as intense as today at the height of the last glacial, whereas the ice cores from Greenland indicate variations that were 70 times as intense.

Their results show that East Greenland has been actively scoured by glacial ice for much of the last 7.5 million years — and indicate that the ice sheet on this eastern flank of the island has not completely melted for long, if at all, in the past several million years.

A prehistoric human skeleton found on the Yucatán Peninsula is at least 13,000 years old and most likely dates from a glacial period at the end of the most recent ice age, the late Pleistocene.

Seismologists at Harvard and Columbia Universities first reported on their tracking of ice - quakes from glaciers in Greenland in 2003, and later showed this glacial earth - shaking was on the rise.

Chris Borstad, a geophysicist at the University Centre in Svalbard, Norway, is particularly interested in Larsen C's «suture zones» — areas where glacial ice flows off land and merges.

By combining GOCE's high - resolution measurements with information from Grace, scientists can now look at changes in ice mass in small glacial systems — offering even greater insight into the dynamics of Antarctica's different basins.

Neanderthals, with whom we shared the planet until just before the last glacial maximum, 20,000 years ago, may have struggled to survive as the rising and falling ice ate away at their habitat — although many other explanations for their extinction have been suggested.

In contrast, in slightly wetter parts of Mongolia the largest glaciers did date from the ice age but reached their maximum lengths tens of thousands of years earlier in the glacial period rather than at its culmination, around 20,000 years ago, when glaciers around most of the planet peaked.

The overall retreat of several kilometers that has occurred over the past 20,000 years was interrupted by a stillstand or a re-advance of several hundred years at the beginning of the ACR, and then by increasingly minor glacial episodes at the end of the YD, at the beginning of the Holocene (around 10,000 years ago) and during the Little Ice Age (13th to 19th centuries).

Global freshwater resources water projects at DTU: 68.9 per cent is accounted for by glacial ice, 30.8 per cent by groundwater and 0.3 per cent by lakes and rivers.

Bar - Yosef points out that, at the time, Earth was in the clutches of the Last Glacial Maximum, the height of the last ice age.

«I'm a little disappointed that they don't look at observations of the fracture toughness of glacial ice,» Bassis told OurAmazingPlanet.

However, 21,000 years ago, at the peak of the last Ice Age, a period known as the Last Glacial Maximum, the Southwest was wetter than it is today — much wetter — and the Northwest was drier — much drier.

At the head of the gorge, glacial debris was plastered on both sides of the valley, confirming that a massive tongue of ice once plunged down a nearby 25,000 - foot - high peak.

Patrick Crill, an American biogeochemist at Stockholm University, says ice core data from the past 800,000 years, covering about eight glacial and interglacial cycles, show atmospheric methane concentrations between 350 and 800 parts per billion in glacial and interglacial periods, respectively.

«The first step was to reconstruct the history of global mean temperatures for the last 784,000 years, using combined data from marine sediment cores, ice cores, and computer simulations covering the last eight glacial cycles,» said Friedrich, a post-doctoral researcher at IPRC.

«If you haven't had proximity to these glaciers, if you haven't thought about where water comes from, it would be easy to understate or underestimate the implications of glacial ice loss in a state that has predominantly a semi-desert climate and certainly by contemporary climate models is going to be pretty significantly impacted by climate change,» said Jacki Klancher, a professor of environmental science at Central Wyoming College.

A spiderweb of small rivers form, cutting channels in the ice and spilling into a series of glacial tarns at the mouth of the basin.

The beginning of the last glacial period was characterized in the Northern hemisphere by significant accumulation of snow at high latitudes and the formation of a huge polar ice sheet.

He saw rocks embedded in glacial ice and heard at least one report of a rocky iceberg floating far out to sea.

Publication: Antarctic ice shield discharge driven by atmosphere - ocean feedbacks at the Last Glacial Termination, DOI: 10.1038 / srep39979

At the end of the last glacial maximum, when ice sheets reached their maximum extent 20,000 to 25,000 years ago, the ice covering Antarctica was even thicker than it is today.

Readers can look for themselves at the Greenland ice core record and decide whether there's anything of consequence going on around 41K before present that looks any different from other glacial - interglacial cycles.You can look at the GISP data yourself by downloading

«Conversely, there is more and better evidence across Iceland that when the ice sheet underwent major reduction at the end of the last glacial period, there was a large increase in both the frequency and volume of basalt erupted — with some estimates being 30 times higher than the present day.

However, it's quite a different matter melting a long - lived massive ice sheet up to 1.5 km thick that covers over 70 % of the land surface (as happened at the end of the last glacial period), from melting isolated and much thinner ice caps / sheets that only cover about 11 % of the land surface (i.e. present - day).»

«The abstract proposes that a landslide at Mt Meager has the potential to trigger a volcanic eruption, not just melting glacial ice.

«Mauna Kea had a large glacial ice cap of about 70 square kilometers [27 square miles] until 14,500 years ago, which has now all disappeared,» said Peter Clark, a geoscientist at Oregon State University.

Terrestrial glacial geologists (such as ourselves) can gain information of past glacial behaviour from mapping and dating former ice sheet extents, and determining the rates at which they receded and thinned, [e.g., 16, 17 - 19].

During Late Pleistocene glacial periods, ice volumes increased markedly along the Antarctic Peninsula [1], possibly reaching 2350 m at Mount Jackson.

At the Last Glacial Maximum, palaeo - ice streams extended to the shelf edge in West Antarctica and in the Antarctic Peninsula, but in East Antarctica they usually were restricted to the mid-outer shelf [44].

Willis, M J, Wilson, T J, James, T S, Mazzotti, S, Bevis, M G, Kendrick, E C, Brown, A, (2010) Geodetically - Constrained Glacial Isostatic Adjustment models of Antarctica: Implications for the Mass Balance of the West Antarctic Ice Sheet, Abstract G34A - 03 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13 - 17 Dec..

At this early stage of knowledge, what was being studied were the glacial periods within the past few hundred thousand years, during the current ice age.

«The recent research findings show that during the last Ice Age, mammoths were the most widely distributed large mammals, thus rightfully serving as a flagship species of the glacial era,» according to Prof. Dr. Ralf - Dietrich Kahlke, an Ice Age researcher at the Senckenberg Research Station for Quaternary Paleontology in Weimar.

With higher precipitation, portions of this snow may not melt during the summer and so glacial ice can form at lower altitudes and more southerly latitudes, reducing the temperatures over land by increased albedo as noted above.

This type of chaotic pattern of rapidly changing land, ice, saltwater and freshwater has been proposed as the likely model for the Baltic and Scandinavian regions, as well as much of central North America at the end of the last glacial maximum, with the present - day coastlines only being achieved in the last few millennia of prehistory.

Huybrechts, P., 2002: Sea - level changes at the LGM from ice - dynamics reconstructions of the Greenland and Antarctic ice sheets during the glacial cycles.

Glacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveGlacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveglacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - level rise.

At the Last Glacial Maximum, circa 18,000 years ago, the ice stream was at the continental shelf edge2At the Last Glacial Maximum, circa 18,000 years ago, the ice stream was at the continental shelf edge2at the continental shelf edge27.

[2] The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Aglacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South AGlacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South AmeriIce Sheet covered southern South America.

Researchers have found that glacial erosion and melting ice caps both played a key role in driving the observed global increase in volcanic activity at the end of the last ice age.

On Everest, one of the most frightening parts of the mountain is the Khumbu Icefall, two - thousand vertical feet of massive columns of glacial ice that can shift around at any moment and come tumbling down in a gigantic ice avalanche, crushing everything in their paths.

Although not initially that impressive, the Opera House's magic takes a little longer than love - at - first - sight admiration, though as sure as Norway's glaciers run deep with ancient ice, this man made glacial showpiece will eventually leave you spellbound.

The Llyn Cwm Llwch a beautiful glacial lake was left behind at the end of the last Ice Age.

For his next show, which opens in February at the Sean Kelly Gallery near Hell's Kitchen, Mr. Thiel reveals a continued interest in colorful, highly textured photographs in a large - scale format, only now the object of his penetrating gaze is glacial ice in Patagonia.

Glacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveGlacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveglacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - level rise.