Xem 1-13 trên 13 kết quả Arctic ice
  • An Empty Room The house where the long trail started was one of gray walls, gray rooms and gray corridors, with carpets that muffled the feet which at intervals passed along them. It was a house of silence, brooding within the high fence that shut it and the grounds from a landscape torpid under the hot sun of summer, and across which occasionally drifted the lonely, mournful whistle of a train on a nearby railroad. Inside the house there was always a hush, a heavy quiet—restful to the brain. But now a voice was raised, young, angry, impatient, in one...

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  • The Earth is the only planet in our solar system that supports life. The complex process of evolution occurred on Earth only because of some unique environmental conditions that were present: water, an oxygen-rich atmosphere, and a suitable surface temperature. Climate change refers to a statistically significant variation in either the mean state of the climate or in its variability, persisting for an extended period (typically decades or longer).

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  • This book addresses the significant environmental changes experienced by high latitude and high altitude ecosystems at the beginning of the 21st century. Increased temperatures and precipitation, reduction in sea ice and glacier ice, the increased levels of UV-radiation and the long-range transported contaminants in arctic and alpine regions are stress factors that challenge terrestrial and aquatic ecosystems.

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  • When a NASA satellite discovers an astonishingly rare object buried deep in the Arctic ice, the floundering space agency proclaims a much-needed victory -- a victory with profound implications for NASA policy and the impending presidential election. To verify the authenticity of the find, the White House calls upon the skills of intelligence analyst Rachel Sexton.

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  • .The Global Cryosphere Past, Present, and Future This is the first textbook to address all the components of the Earth’s cryosphere – all forms of snow and ice, both terrestrial and marine. It provides a concise but comprehensive summary of cryospheric processes for courses at upper undergraduate and graduate level in environmental science, geography, geology, glaciology, hydrology, water resource engineering, and ocean sciences. It also provides a superb up-to-date summary of cryospheric processes for researchers from a range of sciences.

    pdf489p bachduong1311 10-12-2012 21 1   Download

  • The annual summer warming of the Arctic in 2008 was watched closely by an army of expert observers and other interested parties around the world. Organisations such as the US National Oceanic and Atmospheric Administration (NOAA)3 published neardaily updates on the state of the Arctic sea ice, which every year recedes from its winter maximum as the summer comes to the far north. The reason for this scrutiny was the record low level of Arctic sea ice extent observed in summer 2007, when an area of ice nearly the size of Alaska melted.

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  • There is an estimated 1.4 billion km3 of water in the world but only approximately three percent (39 million km³) of it is available as fresh water. Moreover, most of this fresh water is found as ice in the arctic regions, deep groundwater or atmospheric water. Since water is the source of life and essential for all life on the planet, the use of this resource is a highly important issue. 'Water management' is the general term used to describe all the activities that manage the optimum use of the world’s water resources....

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  • Check out these fast facts for a snapshot of Earth's evolving climate. ∗ There is little doubt that the planet is warming. Over the last century the average temperature has climbed about 1 degree Fahrenheit (0.6 of a degree Celsius) around the world. The spring ice thaw in the Northern Hemisphere occurs 9 days earlier than it did 150 years ago, and the fall freeze now typically starts 10 days later.

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  • 1 Foraging: An Overview Hudson Bay in winter is frozen and forbidding. But, at a few special places where strong tidal currents are deflected to the surface by ridges on the seafloor, there are permanent openings in the ice, called polynyas, that serve as the Arctic equivalent of desert oases.

    pdf28p thegun16 29-11-2010 41 5   Download

  • Do you want to learn how to draw a cartoon polar bear cub? Take to the ice and get your pencil at the ready to draw this cute polar bear! It's easy when you follow our four simple paw prints. Brrrrr! With more "ice" than Kanye West, the polar bear is the undisputed king of the Arctic Circle and this cute little cub is just finding his feet (or, should that be paws?) in the snow.

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  • The Inuit people live in the arctic region of North America. They are people confined for months in shelters during the long Arctic winter, when it is dark both day and night. With vast stretches of snow and ice reaching to the horizon in every direction, the men would go hunting on long treks alone, not returning home for days or weeks. In their art, the Inuit are impelled to make sense of this being confined and going out, this feeling of being far away, and coming back in to the center. The masks of the Inuit—going as far back as there is any record...

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  • Cimate change is one of the most important global environmental problems facing the world today. Evidence of a changing climate is all around us, from rising sea level to retreating mountain glaciers, melting Arctic sea ice, lengthening growing seasons, shifting animal migration patterns, and other changes. Such changes are already having adverse impacts on people’s well-being, as climate change amplifies the effects of other environmental and socioeconomic changes and problems and produces new effects of its own.

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  • Antifreeze glycoproteins (AFGPs) constitute the major fraction of protein in the blood serum of Antarctic noto-thenioids and Arctic cod. Each AFGP consists of a varying number of repeating units of (Ala-Ala-Thr)n, withminor sequence variations, and the disaccharide b-D-galactosyl-(1fi3)-a-N-acetyl-D-galactosamine joined as a glycoside to the hydroxyl oxygen of the Thr residues. These compounds allow the fish to survive in subzero ice-laden polar oceans by kineticallydepressing the temperatureatwhich icegrows ina noncolligative manner....

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