Ocean mixing and circulation response in the marginal ice zone
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Ocean mixing and circulation response in the marginal ice zone

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Published .
Written in English

Subjects:

  • Oceanic mixing -- Mathematical models.,
  • Sea ice.

Book details:

Edition Notes

Statementby David G. Markham.
The Physical Object
Pagination93 leaves :
Number of Pages93
ID Numbers
Open LibraryOL14277693M

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Marginal Ice Zone (MIZ) Program. The Arctic and Global Prediction program is ONR's response to the Navy's need for more research into understanding the environment and expanding our predictive capabilities. Explore feedbacks in the ice-ocean-atmosphere system that might increase/decrease the speed of sea ice decline;. The outer region is known as the marginal ice zone, where sea ice transitions to open water, and is an area of high spring-summer phytoplankton blooms that accounts for an estimated 15% of yearly net primary production in the Southern Ocean . Thermal heterogeneities in the marginal ice zone (MIZ) upper ocean led to large ocean-to-ice heat fluxes ( W m-2) and enhanced basal ice melt . Studies of climate frequently involve identifying a plausible forcing mechanism (e.g., solar fluctuations), hypothesizing the response, and attempting to verify the hypothesis with data. This is difficult because the mechanisms are many and frequently small in amplitude, the response complex, and.

  One of the most striking features of the MeHg profiles in the marginal sea ice zone (station 81°N and 85°N) is that the MeHg maxima are very shallow ( – m) compared to other open ocean Cited by: TOPEX/Poseidon and Jason-1 measure ocean surface topography and circulation response to winds. These measurements allow scientists to study the ties between the oceans and atmosphere, to improve global climate forecasts and predictions, and to monitor events such as El Niño conditions and ocean eddies. Mixing in the ocean occurs on several scales, the smallest scale being molecular. If a layer of warm, salty water lies above a layer of colder, fresher water, the heat and salt will tend to diffuse (spread out) downwards to make a single layer with intermediate temperature and salinity values. However, because heat diffuses faster than salt, the process can lead to local instabilities in . An ocean current is a continuous, directed movement of sea water generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences. Depth contours, shoreline configurations, and interactions with other currents influence a current's direction and strength. Ocean currents are primarily .

A wave-ice interaction model for the marginal ice zone (MIZ) is reported, which involves both the attenuation of ocean surface waves by sea ice and the concomitant breaking of the ice by waves. Air-sea interactions in the marginal ice zone Elementa: Science of the Anthropocene • 4: • doi: /ta 3 Methods Cruises and deployments Data were collected from two research cruises, on the R/V Ukpik (July 25th to August 2nd, ) in and out of Prudhoe Bay, AK, and on the Norseman II (September 26th–October 3rd) from Wainwright to . Sea ice features a dense inner pack ice zone surrounded by a marginal ice zone (MIZ) in which the sea ice properties are modified by interaction with the ice-free open ocean, and the width of the MIZ is a fundamental length scale for polar physical . The Arctic marginal ice zone (MIZ) that separates open ocean from the interior pack ice is experiencing rapid changes as a result of high latitude climate change. During summer, for example, its extent relative to total sea ice area is expanding [1], suggesting an increasing presence of thinner, loosely packed ice floes. Changes.