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Wednesday, August 5, 2020 | History

2 edition of model of Arctic Ocean internal waves generated by under-ice topography found in the catalog.

model of Arctic Ocean internal waves generated by under-ice topography

Cynthia Marie Bowline

model of Arctic Ocean internal waves generated by under-ice topography

by Cynthia Marie Bowline

  • 314 Want to read
  • 9 Currently reading

Published .
Written in English

    Subjects:
  • Internal waves -- Mathematical models.,
  • Submarine topography -- Beaufort Sea.,
  • Geology -- Beaufort Sea.

  • Edition Notes

    Statementby Cynthia M. Bowline.
    The Physical Object
    Pagination123 leaves, bound :
    Number of Pages123
    ID Numbers
    Open LibraryOL17699634M

      Wave Model (FVCOM-SWAVE) to the Arctic Ocean: Effects of Ice-induced Wave Attenuation Jonni Aleksi Lehtiranta Finnish Meteorological Institute Ensemble sea ice forecasting and different fast ice schemes in the Baltic Sea Amy Solomon University of Colorado and NOAA/ESRL Improving sea ice forecasting in the marginal ice 1 Surface Waves. Waves affect a large number of marine activities and biochemical processes that take place on and below the ocean surface. The widespread wind‐generated waves are, for example, responsible for inducing considerable loads on marine structures such as ships and offshore platforms, pipelines, mooring systems, renewable energy installations, and port activities among many others

    NERC Changing Arctic Ocean: Primary productivity driven by escalating Arctic nutrient fluxes? (Lead Principle Investigator, Lenn) NERC Postdoctoral Fellowship Principle Investigator. TEA-COSI:The Environment of the Arctic: Climate, Ocean and Sea-Ice UK NERC Con sortium: Including Lenn (Project Partner, Bangor.). Upper ocean heat flux in the Eurasian Data from coastal tide gauges, oceanographic moorings, and a numerical model show that Arctic storm surges force continental shelf waves (CSWs) that dynamically link the circumpolar Arctic continental shelf system. These trains of barotropic disturbances result from coastal convergences driven by cross-shelf Ekman transport. Observed propagation speeds of − km day–1, periods of 2

    MIT's Department of Mechanical Engineering (MechE) offers a world-class education that combines thorough analysis with hands-on discovery. One of the original six courses offered when MIT was founded in , MechE's faculty and students conduct research that pushes boundaries and provides creative solutions for the world's @ ABSTRACT BOOK 25 Years of Progress in Radar Altimetry Workshop September Ponta Delgada Azores Last update: 19 October


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Model of Arctic Ocean internal waves generated by under-ice topography by Cynthia Marie Bowline Download PDF EPUB FB2

The possibility of these waves being\ud generated by moving pack ice with a corrugated under-side is\ud explored in this paper.

An analytical model of internal waves\ud generated by impulsively moving the ice is used to obtain a\ud frequency spectrum of vertical velocity from two reference\ud frames: one fixed relative to the earth and the Internal waves in Arctic regions have been of recent scientific interest due to their role in vertical mixing, and their influence on the heat budget of the upper ocean and ice cover (Morozov and A model of ice-ocean form drag was developed and introduced into the CICE sea ice model by the authors [Tsamados et al, ].

We have now expanded the parameterization of ice-ocean drag to include a new source of drag generated by internal waves generated by ice keels and by developing a parameterization of ice-ocean topography derived from analysis of Upwards Looking Sonar :// The shift in winds and ice–ocean shear (and internal waves generated just after 23 December) also corresponded to elevated momentum flux and an erosion of stratification within the mixed layer due to a mixing event that reached to the mixed layer base.

It is not clear in what order the wind shift, increased turbulence, erosion of mixed layer 2 days ago  Near-inertial waves (NIWs) are a special class of internal gravity waves with periods set by planetary rotation and latitude (e.g., at 30° latitude, one cycle per 24 hours).

They are notable because they contain most of the observed shear in the ocean and around half the kinetic ://   As there, we use the most recent reconstruction of the LGM topography, the ICE-5G model of Peltier (), rather than the older ICE-4G model (Peltier ) used by most previous studies.

Furthermore, our internal tide drag scheme uses a model-derived estimate of ocean stratification at LGM, rather than an ad hoc :// Due to some factors such as the sun's heat radiation, the density of seawater is affected by stratification effect.

In the varying ocean layers, as long as there is a disturbance source, it will generate internal waves in the ocean. Therefore, an internal wave is a kind of dynamic process generally existing in the ocean The coastlines of both the Arctic Ocean and Antarctica are, in general, microtidal; however, one hypertidal region is found in the Arctic Ocean (Gulf of Mezan in the White Sea, Russia), and tidal range is about 7 m at a site (Rutford Ice Stream) under the Ronne Ice In our model, decrease of sea ice in the Arctic Ocean caused by the modification of bottom topography creates negative sea-level pressure anomaly that elongates along the entire Arctic rim, which may induce northward shift of the atmospheric circulation in the lower Troposphere and the subtropical gyre in the North Pacific, and hence, positive Samodurov AS () Model of the climatic spectrum of internal waves in the ocean.

Oceanology 22(2)– Google Scholar Sandström H, Elliott JA () Internal tide and solitons on the Scotian Shelf: a nutrient pump at :// Prof Tom Rippeth.

Professor of Physical Oceanography. Office Location: 3rd floor Craig Mair Building, School of Ocean Sciences Twitter: @rippetht Email: [email protected] Phone: Location: School of Ocean Sciences, Askew Street, Menai Bridge, LL59 5AB Research Gate: Tom_Rippeth2 Google Scholar: Tom Rippeth Overview.

Tom is the established Chair in Physical The changes in Arctic sea ice have a strong impact on the ocean circulation in the AO through modification of the dynamical and thermohaline surface forcing of the ocean [e.g., Giles et al., ], on the Arctic amplification via ice albedo and temperature feedbacks [Pithan and Mauritsen, ], and on weather at lower latitudes and Internal waves generated in the Luzon Strait travel westward as solitary waves of depression, and transform into waves of elevation as they shoal on the shallowing shelf topography in water depths Internal lee waves generated by geostrophic flows over rough topography are thought to be a significant energy sink for eddies and energy source for deep ocean mixing.

The sensitivity of the energy flux into lee waves from pre-industrial, present and possible future climate conditions is explored in this study using linear ://?author= The seasonal sea ice zone is defined as the area between the minimum and maximum seasonal ice limits plus the region of the ice margin that is significantly affected by the ice-ocean boundary.

This definition includes almost all of the Antarctic ice cover, the ice in the marginal seas around the Arctic and the ice cover overlying the shelves of   An eddy-permitting projection of sea ice and ocean state using an Ocean General Circulation Model (OGCM) is used to examine changes in ocean circulation and sea ice cover in the Arctic Ocean in – The model (hereafter, NEMO-ROAM) is a configuration developed in the Regional Ocean Acidification Modeling project (ROAM).

This is a   The possibility of the generation of internal tidal waves by topography above the critical latitude was shown by Naka-mura et al. (), with the use of the fully nonlinear nonhy-drostatic model. These waves are generated and trapped by the barotropic tidal flux at the lee side of the sill.

They for internal waves under an ice-covered ocean. The fluid consists of two layers of constant densities, separated by an interface. The elastic sheet resists bending forces and is mathematically described by a fully nonlinear thin shell model.

Fully localized solitary waves are computed via a boundary integral method. Progression along the ?doi=&rep=rep1&type=pdf. Propagation of low frequency seismo-acoustic waves in the Arctic Ocean ice canopy is examined through analysis of hydrophone and geophone data sets collected in at an ice camp designated Recent current measurements obtained from drifting platforms over the Yermak Plateau in the eastern Arctic Ocean confirm that the plateau is a region of greatly enhanced diurnal tidal currents.

Modulation of the diurnal currents is clearly related to the plateau topography, as has been previously ://. The geography of deep-ocean mixing driven by internal tides is poorly constrained in ocean models. Here the authors unveil the global variability of energetic small-scale internal tides, combining Vertical and lateral water properties and density structure within the Arctic Ocean are intimately related to the ocean circulation, and have profound consequences for sea ice growth and retreat as well as for propagation of acoustic energy at all scales.

Recently, there has been significant arctic warming, accompanied by changes in the extent, thickness distribution, and properties of the ?id=soda. Climate change will swell the highest waves in the Arctic Ocean, endangering people who live and work in coastal areas. As Earth warms, sea ice melts and wind patterns shift.

In the Arctic, loss