1. The Science of Waterfall Ice

    10:53

    from Ephy Wheeler / Added

    1,042 Plays / / 1 Comment

    This was a final project for JRN 480 Documentary Filmmaking at the University of Alaska Fairbanks. While not taking radar transects of the ice I shot everything by cellphone, GoPro, and a Panasonic AG-HMC40. On the science behind waterfall ice: Waterfall ice is a form of ice that has been rarely studied scientifically. Ice waterfalls are an ephemeral part of our landscape that often do not leave a trace of their existence when the winter ends. Even at temperatures as low as -40 or -30C, water can still flow within or under ice in streams and over waterfalls. How? Because water generates heat when it freezes, this heat warms the surrounding ice and creates a protective warm pathway for water to continue flow despite cold temperatures. In this way, it is an analogy for water flowing through conduits in cold glacier ice - a process that may be more prominent than we thought possible. Waterfall Ice also supports an active climbing community - one with different challenges and dangers than rock climbing. Under some conditions, one stroke of an ice tool can cause a chunk of ice that is large enough to kill someone to fall, the same piece of ice may have been perfectly safe a few days earlier. For more information visit: http://ice.gi.alaska.edu/home Music from: Clogs http://clogs.bandcamp.com/ Talk Demonic https://soundcloud.com/talkdemonic Phillipians http://www.last.fm/music/Philippians Special thanks to: Dr. Erin Pettit Dragonfly Falls Team Rob Prince Ryan Bateman

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    • High-flying research

      02:58

      from UiB - Universitetet i Bergen / Added

      66 Plays / / 0 Comments

      A carpenter needs his hammer, a dentist is helpless without his drill, Joachim Reuder has progressed from balloon to radio-controlled aeroplane.

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      • Arctic Futures Symposium 2011: Interview with Vladimir Romanovsky

        07:26

        from International Polar Foundation / Added

        29 Plays / / 0 Comments

        Vladimir Romanovsky is a Professor of Geophysics at the Permafrost Laboratory at the Geophysical Institute at the University of Alaska Fairbanks. Prof. Romanovsky gives a brief overview of how permafrost is warming and the consequences on infrastructure and the carbon cycle as well as the importance of the IPY ‘Thermal State of Permafrost’ research project in providing new data sets.

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