Sentences with phrase «in polar waters»

The sea - ice biome accounts for a large proportion of primary production in polar waters and supports a substantial food web.

`... The halocline is far more important in polar waters in producing water column stratification.

A new public web portal, designed to support implementation of IMO's Polar Code for ships operating in polar waters, has been welcomed by IMO's Stefan Micallef, Assistant Secretary - General and Director of the Marine Environment Division.

It bans sewage discharges in polar waters and ones of oily mixtures.

Re # 92 The carbonate compensation depth (the depth below which calcium carbonate dissolves) is shallow in polar waters, so calcium carbonate sediments are virtually absent on the arctic seabed.

Set out on an expedition with MS Spitsbergen, our latest expedition ship - equipped and adapted for sailings in polar waters throughout Arctic regions.

The Polar Code provides for safe ship operation in polar waters and the protection of the polar environment.

Zonal averages in the polar waters are from the places where the lines of latitude get closer together (they meet at the Pole).

Not exact matches

Scott started putting his work ethic to good use helping doctors in Liberia, the polar opposite of New York City, where there was no running water, no electricity and no sewer system.

From water - and snow - resistant parkas made from skins worn by hunters in polar regions to garments fabricated using woven straw, such as the ancient Japanese

From water - and snow - resistant parkas made from skins worn by hunters in polar regions to garments fabricated using woven straw, such as the ancient Japanese mino, people have long sought ways to remain dry while outside in wet weather.

That means he's not trying to solve world poverty, bring fresh water to Africa, bring the internet to the farthest reaches of South America, or save species in the polar regions from going extinct.

Many scientists think these permanently shadowed regions, such as the floors on impact craters in the Moon's polar regions, could hold large deposits or water ice.

Much of the world's water is stored in glaciers and the great polar ice sheets.

Today the small amount of water detected on the planet is locked in the polar ice caps, but recently discovered geological features suggest liquid water once flowed on its surface.

These low - oxygen zones form naturally as colder waters that have absorbed oxygen in the polar regions sink and flow south.

«I was very happy to see this new work by Kite and Rubin that brings to the fore a process that had escaped notice: the pumping of water in and out of the deep fractures of the south polar ice shell by tidal action,» said Carolyn Porco, head of Cassini's imaging science team and a leading scientist in the study of Enceladus.

But these low - oxygen waters near the equator are expanding, because the water in the polar regions is not as cold and is not absorbing as much oxygen as it used to be.

In aqueous fluids, amino acid residues that have polar sidechains — components that can have a charge under certain physiological conditions or that participate in hydrogen bonding — tend to be located on the surface of the protein where they can interact with water, which has negatively and positively side charges to its moleculIn aqueous fluids, amino acid residues that have polar sidechains — components that can have a charge under certain physiological conditions or that participate in hydrogen bonding — tend to be located on the surface of the protein where they can interact with water, which has negatively and positively side charges to its moleculin hydrogen bonding — tend to be located on the surface of the protein where they can interact with water, which has negatively and positively side charges to its molecule.

These particles can build up electric charges faster than the soil can dissipate them and may cause sparking, particularly in the polar cold of permanently shadowed regions — unique lunar sites as cold as minus 240 degrees Celsius and known to contain water ice.

When they discovered a new parasite in water fleas a couple of years ago, they classified this undescribed species as a microsporidium, mostly because it possessed the unique harpoon - like infection apparatus (the polar - tube), one of the hallmarks of microsporidia.

Background Mammals that have evolved to live in cold waters, such as whales, seals, sea lions and polar bears, commonly have a layer of blubber.

Within two hours Phoenix had transmitted the first surface images of the planet's polar terrain: a level plain marked with regular octagonal mounds and furrows, evidence of freeze - thaw cycles in a substance that Phoenix's instruments would prove to be frozen water.

Clementine used radar to detect the signature of water in the permanently - shadowed South polar region, which scientists thought was the most likely place to look for water.

A series of robotic missions, from Viking in the 1970s to the Spirit rover still roaming Mars today, have observed ancient riverbeds and polar ice caps storing enough water to submerge the entire planet in an ocean 40 feet deep.

Diving right in Ray, who was one of the first scientists to use scuba diving to study marine animals in polar environments, has not only observed the biological adaptations that mammals employ in cold ocean waters, but has also experienced prolonged immersion in those waters firsthand.

As Mars Express flies in polar orbit, dipping to within 155 miles of the planet spinning beneath it, instruments made in Sweden, France, and Italy will map the composition of the atmosphere, looking in part for evidence that vestiges of that water are still escaping into space.

It has also decreased the amount of the oldest, thickest Arctic sea ice, leaving polar waters dominated by thinner ice that forms in the fall and melts in the summer.

The GRS will also be able to detect the presence of volatile materials in the permafrost and the polar caps, such as water and carbon dioxide.

A spent rocket stage that NASA sent hurtling into the moon last year in hopes of kicking up water from a polar crater delivered on that mission, revealing that at least a moderate portion of its target was indeed made of ice.

As a result of atmospheric patterns that both warmed the air and reduced cloud cover as well as increased residual heat in newly exposed ocean waters, such melting helped open the fabled Northwest Passage for the first time [see photo] this summer and presaged tough times for polar bears and other Arctic animals that rely on sea ice to survive, according to the U.S. Geological Survey.

The hunt for extreme oil proceeds apace in the ultradeep waters off the coasts of Ghana and Nigeria, in the sulfur - laden depths of the Black Sea, under the polar ice caps, and in the gummy tar sands of Venezuela's Orinoco Basin and Canada's McMurray Formation.

A young polar bear stands on pack ice over deep waters in the Arctic Ocean in October 2009, during a major research project headed by the University of Wyoming.

At the same time, the scientists found that polar bears use an unusual physiological response to avoid unsustainable heat loss while swimming in the cold Arctic waters.

The craft is designed to dig into the cementlike layer of ice that researchers believe lies buried a few inches below the surface in the planet's polar regions, scanning for signs of past liquid water and organic compounds, the carbon - rich molecules that make life on Earth possible.

Some changes are well - known, such as declines in polar bear populations and stresses to walruses being forced out of their shallow feeding grounds as ice retreats into deeper waters.

«A lot of research has shown that intrusions of warm water are responsible for melting ice along the polar coastlines and that these intrusions are steered by the shape of the seafloor,» said Jamin Greenbaum, an oceanography and geology expert at the University of Texas, Austin, who was not involved with the new study, in an email.

That includes mixedphase clouds, which occur in polar regions and combine supercooled water with ice.

Ray, who was one of the first scientists to use scuba diving to study marine animals in polar environments, has not only observed the biological adaptations that mammals employ in cold ocean waters, but has also experienced prolonged immersion in those waters firsthand.

He re-told the familiar tale of the evolution of land animals from ancient fish, and then considered the return of various groups of reptiles, birds and mammals to an aquatic existence: ichthyosaurs and plesiosaurs, crocodiles, sea - snakes, penguins, whales, dolphins and porpoises, manatees and dugongs, and seals — as well as polar bears, otters and water voles, who hunt in water.

Enceladus is subject to forces that heat a global ocean of liquid water under its icy surface, resulting in its famous south polar water jets which are just visible below the moon's dark, southern limb.

Other key discoveries included evidence that Enceladus's spouting water lands in Saturn's atmosphere and that the south polar area changes over time, hinting at evidence of Earth - like plate tectonics.

But there is evidence that the Red Planet had a warmer and wetter past: dried - up river beds, polar ice caps, volcanoes and minerals that form in the presence of water have all been found.

The new results show that atmospheric water in the near - polar region was enriched by a factor of seven relative to Earth's ocean water, implying that water in Mars» permanent ice caps is enriched by 8-fold.

The team was especially interested in regions near the north and south poles, because the polar ice caps are the planet's largest known reservoir of water.

Water seems to exist there only as ice, in the polar ice caps and perhaps under the Martian soil.

Closer investigation of these plumes, originating from geysers blasting from polar fissures in Enceladus» icy crust, revealed this water was coming from a warm subsurface salty ocean and the water was laced with hydrocarbons and ammonia, or «many of the ingredients that life would need if it were to start in an environment like that,» Soderblom tells HowStuffWorks.

In 2005, NASA's Cassini probe spotted plumes erupting from the Enceladus» south polar terrain, sending water vapor and solid particles from that subterranean ocean off into space.

In this polar desert, rainfall is unknown, and there is only 10 mm snow fall (water equivalent) per year.

Difficult to see how salt content of the polar and temperate ocean waters is going to go up in those circumstances.