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Orbital Sensing of Mackenzie Bay Ice Dynamics

B. Dey
Arctic
Vol. 33, No. 2 (Jun., 1980), pp. 280-291
Stable URL: http://www.jstor.org/stable/40509027
Page Count: 12
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Orbital Sensing of Mackenzie Bay Ice Dynamics
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Abstract

Satellite images are a useful tool in the study of sea ice dsnamics. The results of studies using satellite images of Mackenzie Bay during the break-up and freeze-up periods are presented in maps and tables. These indicate important temporal variations in the processes of bay ice break-up and freeze-up, Though the Mackenzie Bay break-up proceeds from the south and from the north, the southern melt rate is faster because of an influx of warm water from the Mackenzie River. The freeze-up proceeds from south to north, i. e., from the fresh water area to the saline water area of the bay. The study of Mackenzie Bay ice dynamics is important because of the barge traffic through the Mackenzie River and also because of offshore drilling activities in the Beaufort Sea. /// Les images prises par satellite sont un outil utile pour l'étude de la dynamique des glaces de mer. Des cartes et des tableux illustrent les résultats des études faites à partir des images orbitales, cela à l'époque du degél et du gel. Ils indiquent des variations importantes temporaires dans les processus du degél et du gel de la glace de baie. Bien que le degél de la baie du Mackenzie se réalise à partir du sud et du nord, la fusion méridionale est plus rapide, à cause d'un apport d'eau "chaude" venant du fleuve Mackenzie. Le gel se réalise du sud au nord, de la region à l'eau douce vers celle à eau salée de la baie. L'étude de la dynamique de la glace de la baie du Mackenzie est importante à cause de la circulation des barges sur le fleuve Mackenzie et aussi à cause des activités de forage en mer de Beaufort.

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