Academic literature on the topic 'Gyre de Beaufort'

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Journal articles on the topic "Gyre de Beaufort"

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Meneghello, Gianluca, Edward Doddridge, John Marshall, Jeffery Scott, and Jean-Michel Campin. "Exploring the Role of the “Ice–Ocean Governor” and Mesoscale Eddies in the Equilibration of the Beaufort Gyre: Lessons from Observations." Journal of Physical Oceanography 50, no. 1 (2020): 269–77. http://dx.doi.org/10.1175/jpo-d-18-0223.1.

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AbstractObservations of Ekman pumping, sea surface height anomaly, and isohaline depth anomaly over the Beaufort Gyre are used to explore the relative importance and role of (i) feedbacks between ice and ocean currents, dubbed the “ice–ocean governor,” and (ii) mesoscale eddy processes in the equilibration of the Beaufort Gyre. A two-layer model of the gyre is fit to observations and used to explore the mechanisms governing the gyre evolution from the monthly to the decennial time scale. The ice–ocean governor dominates the response on interannual time scales, with eddy processes becoming evid
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Meneghello, Gianluca, John Marshall, Mary-Louise Timmermans, and Jeffery Scott. "Observations of Seasonal Upwelling and Downwelling in the Beaufort Sea Mediated by Sea Ice." Journal of Physical Oceanography 48, no. 4 (2018): 795–805. http://dx.doi.org/10.1175/jpo-d-17-0188.1.

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AbstractWe present observational estimates of Ekman pumping in the Beaufort Gyre region. Averaged over the Canada Basin, the results show a 2003–14 average of 2.3 m yr−1 downward with strong seasonal and interannual variability superimposed: monthly and yearly means range from 30 m yr−1 downward to 10 m yr−1 upward. A clear, seasonal cycle is evident with intense downwelling in autumn and upwelling during the winter months, despite the wind forcing being downwelling favorable year-round. Wintertime upwelling is associated with friction between the large-scale Beaufort Gyre ocean circulation an
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Manucharyan, Georgy E., Michael A. Spall, and Andrew F. Thompson. "A Theory of the Wind-Driven Beaufort Gyre Variability." Journal of Physical Oceanography 46, no. 11 (2016): 3263–78. http://dx.doi.org/10.1175/jpo-d-16-0091.1.

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AbstractThe halocline of the Beaufort Gyre varies significantly on interannual to decadal time scales, affecting the freshwater content (FWC) of the Arctic Ocean. This study explores the role of eddies in the Ekman-driven gyre variability. Following the transformed Eulerian-mean paradigm, the authors develop a theory that links the FWC variability to the stability of the large-scale gyre, defined as the inverse of its equilibration time. The theory, verified with eddy-resolving numerical simulations, demonstrates that the gyre stability is explicitly controlled by the mesoscale eddy diffusivit
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Zhong, Wenli, and Jinping Zhao. "Deepening of the Atlantic Water Core in the Canada Basin in 2003–11." Journal of Physical Oceanography 44, no. 9 (2014): 2353–69. http://dx.doi.org/10.1175/jpo-d-13-084.1.

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Abstract In 2004, a cold mode of Atlantic Water (AW) entered the western Canada basin, replacing the anomalously warm AW that resided in the basin since the 1990s. This slightly colder AW was denser than the 1990s warm mode; it gradually filled most of the western basin by 2009. The enhanced surface stress curl led to the spinup of the Beaufort Gyre and convergence of freshwater. The spinup also resulted in a deepening of the AW core at the center of the gyre and in shoaling of the AW core at the margins of the gyre. The density versus depth relationship revealed in this study shows that the d
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Davis, Peter E. D., Camille Lique, and Helen L. Johnson. "On the Link between Arctic Sea Ice Decline and the Freshwater Content of the Beaufort Gyre: Insights from a Simple Process Model." Journal of Climate 27, no. 21 (2014): 8170–84. http://dx.doi.org/10.1175/jcli-d-14-00090.1.

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Abstract Recent satellite and hydrographic observations have shown that the rate of freshwater accumulation in the Beaufort Gyre of the Arctic Ocean has accelerated over the past decade. This acceleration has coincided with the dramatic decline observed in Arctic sea ice cover, which is expected to modify the efficiency of momentum transfer into the upper ocean. Here, a simple process model is used to investigate the dynamical response of the Beaufort Gyre to the changing efficiency of momentum transfer, and its link with the enhanced accumulation of freshwater. A linear relationship is found
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Regan, Heather, Camille Lique, Claude Talandier, and Gianluca Meneghello. "Response of Total and Eddy Kinetic Energy to the Recent Spinup of the Beaufort Gyre." Journal of Physical Oceanography 50, no. 3 (2020): 575–94. http://dx.doi.org/10.1175/jpo-d-19-0234.1.

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AbstractThe Beaufort Gyre in the Arctic Ocean has spun up over the past two decades in response to changes of the wind forcing and sea ice conditions, accumulating a significant amount of freshwater. Here a simulation performed with a high-resolution, eddy-resolving model is analyzed in order to provide a detailed description of the total and eddy kinetic energy and their response to this spinup of the gyre. On average, and in contrast to the typical open ocean conditions, the levels of mean and eddy kinetic energy are of the same order of magnitude, and the eddy kinetic energy is only intensi
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Armitage, Thomas W. K., Sheldon Bacon, Andy L. Ridout, Alek A. Petty, Steven Wolbach, and Michel Tsamados. "Arctic Ocean surface geostrophic circulation 2003–2014." Cryosphere 11, no. 4 (2017): 1767–80. http://dx.doi.org/10.5194/tc-11-1767-2017.

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Abstract. Monitoring the surface circulation of the ice-covered Arctic Ocean is generally limited in space, time or both. We present a new 12-year record of geostrophic currents at monthly resolution in the ice-covered and ice-free Arctic Ocean derived from satellite radar altimetry and characterise their seasonal to decadal variability from 2003 to 2014, a period of rapid environmental change in the Arctic. Geostrophic currents around the Arctic basin increased in the late 2000s, with the largest increases observed in summer. Currents in the southeastern Beaufort Gyre accelerated in late 2007
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Plueddemann, A. J., R. Krishfield, T. Takizawa, K. Hatakeyama, and S. Honjo. "Upper ocean velocities in the Beaufort Gyre." Geophysical Research Letters 25, no. 2 (1998): 183–86. http://dx.doi.org/10.1029/97gl53638.

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Vazquez, Heriberto J., Bruce D. Cornuelle, Peter F. Worcester, and Matthew Dzieciuch. "Ocean acoustic tomography in the Beaufort Gyre." Journal of the Acoustical Society of America 152, no. 4 (2022): A110. http://dx.doi.org/10.1121/10.0015713.

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An ocean acoustic tomography array with a radius of 150 km was installed in the central Beaufort Gyre during 2016–2017 for the Canada Basin Acoustic Propagation Experiment (CANAPE). Five transceivers were deployed in a pentagon shape with a sixth transceiver at the center and a long vertical receiving array northwest of the central mooring. At least 12 refracted-surface-reflected (RSR) ray arrivals with lower turning points at depths between 500 and 3500 m were resolved in the acoustic receptions at all receivers. Travel-time anomalies were computed relative to a range-dependent sound-speed re
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Morison, James, Ron Kwok, Suzanne Dickinson, et al. "The Cyclonic Mode of Arctic Ocean Circulation." Journal of Physical Oceanography 51, no. 4 (2021): 1053–75. http://dx.doi.org/10.1175/jpo-d-20-0190.1.

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AbstractArctic Ocean surface circulation change should not be viewed as the strength of the anticyclonic Beaufort Gyre. While the Beaufort Gyre is a dominant feature of average Arctic Ocean surface circulation, empirical orthogonal function analysis of dynamic height (1950–89) and satellite altimetry–derived dynamic ocean topography (2004–19) show the primary pattern of variability in its cyclonic mode is dominated by a depression of the sea surface and cyclonic surface circulation on the Russian side of the Arctic Ocean. Changes in surface circulation after Arctic Oscillation (AO) maxima in 1
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Dissertations / Theses on the topic "Gyre de Beaufort"

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Wilson, Ana Lisa. "Structure and dynamics of the thermohaline staircases in the Beaufort Gyre." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Sep%5FWilson%5FAna.pdf.

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Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, September 2007.<br>Thesis Advisor(s): Radko, Timour. "September 2007." Description based on title screen as viewed on October 25, 2007. Includes bibliographical references (p. 55-57). Also available in print.
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Bertosio, Cécilia. "On the evolution of the halocline in the upper Arctic Ocean since 2007." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS423.

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Dans l'océan Arctique, la stratification est déterminée par la salinité, contrairement aux océans des latitudes moyennes qui sont stratifiés par la température. En d'autres termes, en Arctique, les eaux salées se retrouvent au fond, même si elles sont plus chaudes. La halocline de l'océan Arctique correspond à une couche épaisse de 100-200m avec de forts gradients verticaux de salinité et est située entre 100 et 350m de profondeur. Elle s'insère entre la glace de mer située en surface et la couche relativement chaude des eaux Atlantiques. La halocline isole ainsi la glace du réservoir de chale
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McGeehan, Timothy P. "Investigation of 2-dimensional isotropy of under-ice roughness in the Beaufort Gyre and implications for mixed layer ocean turbulence." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://bosun.nps.edu/uhtbin/hyperion-image.exe/08Mar%5FMcGeehan.pdf.

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Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, March 2008.<br>Thesis Advisor(s): Stanton, Timothy P. "March 2008." Description based on title screen as viewed on May 5, 2008. Includes bibliographical references (p. 72-74). Also available in print.
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Books on the topic "Gyre de Beaufort"

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W, Ostrom, and Woods Hole Oceanographic Institution, eds. Beaufort Gyre freshwater experiment: Deployment operations and technology 2003. WHOI, 2004.

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J, Kemp, and Woods Hole Oceanographic Institution, eds. The Beaufort Gyre Observing System 2004: Mooring recovery and deployment operations in pack ice. Woods Hole Oceanographic Institution, 2005.

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3

McCormick, Michael E. Studies of sediment transport by Beaufort Gyre pack ice, 1992: Sediment, ice, & water data. U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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W, Barnes Peter, and Geological Survey (U.S.), eds. Studies of sediment transported by Beaufort Gyre pack ice, Arctic Ocean, 1993: Concentrations, textural and carbon data. U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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W, Barnes Peter, and Geological Survey (U.S.), eds. Studies of sediment transported by Beaufort Gyre pack ice, Arctic Ocean, 1993: Concentrations, textural and carbon data. U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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W, Barnes Peter, and Geological Survey (U.S.), eds. Studies of sediment transported by Beaufort Gyre pack ice, Arctic Ocean, 1993: Concentrations, textural and carbon data. U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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7

Studies of sediment transport by Beaufort Gyre pack ice, 1992: Sediment, ice, & water data. U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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Book chapters on the topic "Gyre de Beaufort"

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Carmack, Eddy, Fiona McLaughlin, Michiyo Yamamoto-Kawai, et al. "Freshwater Storage in the Northern Ocean and the Special Role of the Beaufort Gyre." In Arctic–Subarctic Ocean Fluxes. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6774-7_8.

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Reports on the topic "Gyre de Beaufort"

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Zhang, Jiaxu. The role of the Beaufort Gyre in Arctic and global climate variability: An eddy-permitting ocean-sea ice model perspective (w18_hilatbg). Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1498002.

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