Sentences with phrase «ice caps at»

The text follows adventurous scientists through the ice caps at the poles to the coral reefs of the tropical seas.

«Consequently, we should expect not the catastrophic melting of ice, but, on the contrary, the gradual growth of ice caps at the poles.

It was supposed to show how amazingly navigable the Arctic Circle has become now that climate change is supposedly melting the polar ice caps at a dangerous and unprecedented rate.

Even just 100 million years ago, there were no continuous ice caps at the poles (just winter snow): all the ice melted in the summer at the poles, and deciduous rain forests existed within 1,000 km of the poles.

For most of the earth's history past the Cambrian explosion 500mya when life began to take up residence on land there have been no ice caps at all and far higher CO2 levels.

We neglect the other glaciers and ice caps at our peril.

There were extensive polar ice caps at intervals from 350 to 260 million years ago, during the Carboniferous and early Permian Periods, associated with the Karoo Ice Age.

Atmospheric carbon dioxide began to drop, steadily generating today's world, with ice caps at both poles.

Telescopes spied water in ice caps at the Red Planet's poles, as well as signs of an ancient ocean covering the northern hemisphere.

At Venus distance the oceans should be heated to higher temperature, ensuring that there was no permanent ice cap at the poles.

There might be some possibility of storing under the ice cap at high pressure in a liquified state, where, although there can be leaks there would not be an energy cost in storage.

Satellite photographs show that the polar ice cap at the time of maximum summer melt — about now — has been reduced by about 6 percent since 1980.

First, of all, may I ask you if you know what is the status of the Arctic ice cap at this moment?

After all, at the same time the Arctic was melting, the Antarctic Ice Cap at the South Pole was setting a record for the greatest extent of polar ice in observed history and at the same time South America and much of the Southern Hemisphere was experiencing the coldest and longest winter in at least 50 years.

The methane produced by the burning of biomass, like wood, contains more of the heavier isotope (carbon - 13) relative to the lighter isotope (carbon - 12), than methane which is produced in wetlands,» explains Professor Thomas Blunier, Centre for Ice and Climate at the Niels Bohr Institute at the University of Copenhagen.The researchers have measured the isotopic composition of the methane in ice cores that are drilled up from the Greenland ice cap at the NEEM project in northwestern Greenland.

Not exact matches

Once again, the Kalik's are icy cold I could swear that the casino is fixed, cause it seemed like every dealer in Blackjack was pulling 21's out of their butts, but I won't get into that:p Most evenings with the family were capped off with an ice cream at the Atlantis pier... there really is not much more to do for little kids.

One of the sections of the book mentioned that at the current rate of climate change and human stupidity, the Himilayan ice cap will have completely melted within a century.

If Pluto were a completely smooth sphere, it would have either a permanent swath of nitrogen ice at the equator or seasonal snow caps at its poles.

Such brine would freeze as it moved toward lower temperatures at the edge of the ice cap, forming a ring of concentrated salt.

This could allow the ice cap to flow like a glacier, say David Fisher at the Geological Survey of Canada in Ottawa, and colleagues.

Moreover, Thompson has documented runaway melting at Quelccaya, a massive ice cap in the Andes of Peru.

What will ice cores in the next century say about our civilization — will there even be ice caps left to look at?

The ice cap of Mars's north pole is marked with enormous gorges; the largest, Chasma Boreale (jutting upward at right), is deeper and wider than the Grand Canyon.

At least two large, supersalty lakes lie deep beneath an ice cap in far northeastern Canada, a new radar survey shows.

There have been thousands of small earthquakes over the past week at Bardarbunga, which is Iceland's largest volcanic system and located under the ice cap of a glacier.

«The frozen history from this tropical ice cap — which is melting away as Earth continues to warm — is archived in freezers at -30 ºC so that creative people will have access to it 20 years from now, using instruments and techniques that don't even exist today,» he said.

Although water ice was known to exist at the polar caps of Mars (see ScienceNOW, 28 May, 2002), Mars Express has now observed its spectroscopic signature for the first time.

Global warming won't just melt ice caps; it could create whole new biomes — major ecosystem types like forest, desert, grassland, and tundra — say climatologists led by John Williams at the University of Wisconsin at Madison.

Drawing on odd, icy - looking landforms in earlier images, he and colleagues proposed in 2003 that in the geologic past, snow - fed glaciers and ice fields had covered much of the lower latitudes of Mars at the expense of the polar ice caps (Science, 11 April 2003, p. 234).

Although scientists have analysed gases from tiny bubbles trapped in ice cores drilled in polar ice caps, there are doubts about how closely the composition of the bubbles matches that of the atmosphere at the time they were trapped (see New Scientist, Science, 22 August).

Soot has already been implicated in the melting of the polar ice caps, and heating of the atmosphere over India was directly measured in 2007 by Veerabhadran Ramanathan of the Scripps Institution of Oceanography at the University of California, San Diego, and his colleagues.

When his team ran the same scenario but capped air pollution at 2000 levels, ice - free summers in the Arctic started more than a decade earlier in 2045.

Our study suggests that at medium sea levels, powerful forces, such as the dramatic acceleration of polar ice cap melting, are not necessary to create abrupt climate shifts and temperature changes.»

* The late - summer polar ice cap, already at historic lows today, would shrink only another quarter and hold steady by century's end, instead of melting by more than three - quarters with no let - up in sight.

After downloading a few files from his site and depositing them in my Celestia folder, I found myself staring at a blue planet, cloud formations swirling across its surface, its vast oceans punctuated with landmasses and polar ice caps.

«The traditional view of the loss of land ice on Earth has been that mountain glaciers and ice caps are the dominant contributors, and ice sheets are following behind,» said study co-author Eric Rignot, a glaciologist at NASA's Jet Propulsion Laboratory and the University of California, Irvine.

The balloon will take ANITA up to 38 kilometres over the Antarctic ice cap, where it will circle the South Pole, allowing its antennas to scan a million cubic kilometres of ice at a time (10 to 15 per cent of the whole continent), making this the largest neutrino detector by far.

Between 17,000 and 27,000 years ago, much of the planet's water was frozen at the ice caps, and the continents were extremely arid.

But that could soon change, Rignot said, because the rate at which ice sheets are losing mass is increasing three times faster than the rate of ice loss from mountain glaciers and ice caps.

Mosses with the «dead» radiocarbon were found at high elevations, on pedestals of rock with persistent ice caps that are now slowly melting away.

With the sun continuing to heat the ocean water at the tropical latitudes regardless of ice cap conditions up north, it would seem that the presence of an ice cap would result in a warmer ocean over the long term, with the converse also being true.

Wouldn't the real issue about Antarctic cooling be: if the amount of water locked up in the ice cap increasing or decreasing, and at what rate?

With the albedo of older snow and ice at about 0.6, the open ocean will absorb more heat than the ice capped ocean.

The ice is frozen to the ground underneath that part of the Devon Ice Cap, so we didn't expect to find liquid water,» said Anja Rutishauser, coauthor and a PhD student at the University of Alberice is frozen to the ground underneath that part of the Devon Ice Cap, so we didn't expect to find liquid water,» said Anja Rutishauser, coauthor and a PhD student at the University of AlberIce Cap, so we didn't expect to find liquid water,» said Anja Rutishauser, coauthor and a PhD student at the University of Alberta.

A team of scientists led by Dr. Martin Sharp, a glaciologist at the University of Alberta, discovered the hypersaline lakes while looking for subglacial continents in the Devon Ice Cap.

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).»

«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.

For reasons we don't entirely understand yet, Mars lacks this protection and possesses only remnants of a magnetic field at its polar ice caps.

The sea ice that caps the Arctic Ocean naturally waxes and wanes with the seasons, reaching its maximum area at the end of winter, before the reemergence of the sun in spring starts off the melt season.

Acceleration of melting of ice - sheets, glaciers and ice - caps: A wide array of satellite and ice measurements now demonstrate beyond doubt that both the Greenland and Antarctic ice - sheets are losing mass at an increasing rate.