The effects of tidal jacking on ice displacement and strain in the nearshore environment

Observations on the nearshore movement of an ice cover were made at two locations in the North Baffin Area of the Canadian Arctic. These measurements were made at half hourly and hourly intervals for periods up to 24 hours. From these measurements, a consistent pattern of offshore ice cover movement...

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Bibliographic Details
Main Authors: Stander, E., Frederking, R. M. W., Nadreau, J. P.
Format: Article in Journal/Newspaper
Language:English
Published: 1988
Subjects:
ice
Online Access:https://nrc-publications.canada.ca/eng/view/ft/?id=5add9aff-e1bc-4c7c-8953-4113f1b2223e
https://nrc-publications.canada.ca/eng/view/object/?id=5add9aff-e1bc-4c7c-8953-4113f1b2223e
https://nrc-publications.canada.ca/fra/voir/objet/?id=5add9aff-e1bc-4c7c-8953-4113f1b2223e
Description
Summary:Observations on the nearshore movement of an ice cover were made at two locations in the North Baffin Area of the Canadian Arctic. These measurements were made at half hourly and hourly intervals for periods up to 24 hours. From these measurements, a consistent pattern of offshore ice cover movement has been observed. This has been related to a concommittant lateral shortening of the ice sheet itself. These short term measurements tend to support a tidal jacking mechanism as the cause of the observed movements. Le présent document examine les contraintes exercées par la glace et les facteurs environnementaux au quai de Nanisivik en bordure du détroit de Strathcona, dans l'Arctique canadien, pendant l'hiver de 1985-1986. Le régime glaciaire est caractérisé par la formation de glace de rive de première année qui atteint une épaisseur maximale de 1,6 m en mai. Le mécanisme premier de l'apparition de charges engendrées par la glace à cet endroit semble être les déformations de la couverture de glace attribuables aux variations de température. Une analyse thermique basée sur le comportement du fluage secondaire prédit des contraintes thermiques inférieures à celles mesurées. Peer reviewed: Yes NRC publication: Yes