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The effects of atmospheric and ocean...

Stelma, Sigourney Anne.

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The effects of atmospheric and oceanic conditions on the stability of ice bridges.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The effects of atmospheric and oceanic conditions on the stability of ice bridges./
作者:	Stelma, Sigourney Anne.
面頁冊數:	58 p.
附註:	Source: Masters Abstracts International, Volume: 55-01.
Contained By:	Masters Abstracts International55-01(E).
標題:	Physical oceanography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1596900
ISBN:	9781321989854

The effects of atmospheric and oceanic conditions on the stability of ice bridges.
Stelma, Sigourney Anne.

The effects of atmospheric and oceanic conditions on the stability of ice bridges. - 58 p.

Source: Masters Abstracts International, Volume: 55-01.

Thesis (M.S.)--University of Delaware, 2015.

Ice bridges are arch-like ice structures that form in narrow passages and straits. These bridges play largely important roles in the circulation of Arctic sea ice. When an ice bridge is present in a strait, there is typically a stoppage of sea ice flow, and there generally little ice flow downstream from the bridge. Nares Strait, located between Ellesmere Island and Greenland, allows for Arctic sea ice to be exported into the Atlantic Ocean. Ice bridges typically form in Nares Strait, which causes a stoppage of this export. This stoppage allows for Arctic sea ice to grow thicker, which is important for our current climate. Building on studies that examined the formation of ice bridges, this study aims to model and analyze the destruction of ice bridges.

ISBN: 9781321989854Subjects--Topical Terms:

3168433
Physical oceanography.

The effects of atmospheric and oceanic conditions on the stability of ice bridges.
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245 1 4 $a The effects of atmospheric and oceanic conditions on the stability of ice bridges.
300 $a 58 p.
500 $a Source: Masters Abstracts International, Volume: 55-01.
500 $a Adviser: Helga Huntley.
502 $a Thesis (M.S.)--University of Delaware, 2015.
520 $a Ice bridges are arch-like ice structures that form in narrow passages and straits. These bridges play largely important roles in the circulation of Arctic sea ice. When an ice bridge is present in a strait, there is typically a stoppage of sea ice flow, and there generally little ice flow downstream from the bridge. Nares Strait, located between Ellesmere Island and Greenland, allows for Arctic sea ice to be exported into the Atlantic Ocean. Ice bridges typically form in Nares Strait, which causes a stoppage of this export. This stoppage allows for Arctic sea ice to grow thicker, which is important for our current climate. Building on studies that examined the formation of ice bridges, this study aims to model and analyze the destruction of ice bridges.
520 $a Using CICE: The Los Alamos Sea Ice Model, ice bridges are modeled in an idealized strait that is geographically and dimensionally similar to Nares Strait. The bridges are allowed to strengthen for 7 days past their initial formation. Then various atmospheric and oceanic parameters are changed, to examine their effect on the stable ice bridges. All parameter changes are applied over the entire domain and are constant in time.
520 $a Extreme temperatures are used to study the effect of temperature. Then various amounts of longwave and shortwave radiation are tested independently, combined with temperature and combined with each other and temperature. We found that air temperature alone isn't the driving mechanism in bridge disintegration. As for radiative forcing, long- wave radiation proves to have a stronger effect than shortwave radiation. In fact, when air temperature, longwave radiation and shortwave radiation are combined, longwave radiation is the most dominant factor in disintegrating the bridges, followed by air temperature. Wind and currents are also tested. A seasonal progression, from winter to summer, is also applied to stable ice bridges of different initial thicknesses. All bridges studied under the seasonal progression were destroyed within the three season time constraint.
590 $a School code: 0060.
650 4 $a Physical oceanography. $3 3168433
650 4 $a Atmospheric sciences. $3 3168354
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