Results 291 to 300 of about 37,305 (333)

The International Bathymetric Chart of the Arctic Ocean Version 5.0. [PDF]

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Jakobsson M, Mohammad R, Karlsson M, Salas-Romero S, Vacek F, Heinze F, Bringensparr C, Castro CF, Johnson P, Kinney J, Cardigos S, Bogonko M, Accettella D, Amblas D, An L, Bohan A, Brandt A, Bünz S, Canals M, Casamor JL, Coakley B, Cornish N, Danielson S, Demarte M, Di Franco D, Dickson ML, Dorschel B, Dowdeswell JA, Dreutter S, Fremand AC, Hall JK, Hally B, Holland D, Hong JK, Ivaldi R, Knutz PC, Krawczyk DW, Kristofferson Y, Lastras G, Leck C, Lucchi RG, Masetti G, Morlighem M, Muchowski J, Nielsen T, Noormets R, Plaza-Faverola A, Prescott MM, Purser A, Rasmussen TL, Rebesco M, Rignot E, Rysgaard S, Silyakova A, Snoeijs-Leijonmalm P, Sørensen A, Straneo F, Sutherland DA, Tate AJ, Travaglini P, Trenholm N, van Wijk E, Wallace L, Willis JK, Wood M, Zimmermann M, Zinglersen KB, Mayer L.   +67 more
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Microbial life in Arctic pack ice: Prospects for the Tara Polaris expeditions

Martin Vancoppenolle, Jody W. Deming, Søren Rysgaard, François Fripiat, Acinas, Silvia, G, Marcel Babin, Jens K. Ehn, Jari Haapala, Clara Jm Hoppe, Georges Kanaan, Lee Karp-Boss, Éric Maréchal, Cj Mundy, Marcel Nicolaus, Dorte Haubjerg Søgaard, Letizia Tedesco, Meike Vogt   +16 more
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Acoustically derived ice-fracture velocity in central Arctic pack ice

The Journal of the Acoustical Society of America, 2000
Sounds radiated by fractures in Arctic ice (called acoustic events) are used to estimate fracture velocity. Both speed and orientation are obtained by measuring Doppler shifts induced by source motion. Data from the SIMI experiment of 1994 in the central Arctic are used in the frequency window 10 to 350 Hz.
C, Stamoulis, I, Dyer
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Transport measurements in the arctic ice-pack

Letters in Heat and Mass Transfer, 1980
Abstract The characteristics of the Polar Pack are generally thought to have a large influence on terrestrial weather. Yet the environment of the sea ice and its dynamic response to the seasonal cycle, as well as to gradually changing average conditions, have received little study or transport modelling. A specific measurement program was devised and
Benjamin Gebhart, Tore Audunson
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Sea-ice algae in Arctic pack ice during late winter

Polar Biology, 2007
Pack ice around Svalbard was sampled during the expedition ARK XIX/1 of RV “Polarstern” (March–April 2003) in order to determine environmental conditions, species composition and abundances of sea-ice algae and heterotrophic protists during late winter. As compared to other seasons, species diversity of algae (total 40 taxa) was not low, but abundances
Iris Werner, Johanna Ikävalko, Henrike Schünemann   +2 more
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HF radar observations of Arctic pack-ice breakup

IEEE Journal of Oceanic Engineering, 1986
This paper describes the first reported high-resolution remote measurements of sea-ice velocities during the summer Arctic pack-ice breakup, made with a high-frequency (HF) radar system (CODAR, for Coastal Ocean Dynamics Applications Radar) located on Cross Island, Alaska. Each 36-min observation also gives the positions of the ice edge, the moving ice,
B. Lipa, R. Crissman, D. Barrick
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Vibrational Motion of Arctic Pack Ice,

1997
Abstract : There are many physical mechanisms responsible for vibrations of sea, and they force motions in a very wide band of frequencies from less than 0.01 Hz to greater than 100 Hz. Detailed measurements of the vertical velocity in this frequency band were previously shown to be produced by gravity waves, ridging events and wind turbulence. In this
Zandy Williams, William Morris, John Dugan   +2 more
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Low‐frequency vibrational motion of Arctic pack ice

Journal of Geophysical Research: Oceans, 1992
The mechanisms responsible for vibrational motions of Arctic ice at frequencies below about 100 Hz are know to be a combination of wave types, namely, gravity waves, flexural waves, and a variety of acoustic and/or elastic waves. Surface motion measurements using geophones and accelerometers on multiyear pack ice are used to establish the energy level ...
J. P. Dugan, R. L. DiMarco, W. W. Martin
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Elastic waves in Arctic pack ice

Eos, Transactions American Geophysical Union, 1954
Elastic wave propagation was studied in the Arctic ice pack, on the Beaufort Sea, the Arctic Ocean, and at near‐shore locations. Ice thicknesses varied from 0.1 to 2.1 meters and water depths from 1 ½ to 3800 meters. Values of the elastic constants were derived from the measured velocities of the longitudinal and shear waves and the density. Dispersive
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