Base de données de recherche des TNO

étiquettes: physical sciences, sea ice, ice formation

Objectif(s): 1.Quantify formation, stability, timing and decay of rubble fields, effects of ice rubble on reducing ice loads and provide guidance on optimal rubble field extent; 2.Give guidance on safe access on rubble and/or the ability to clear rubble.

Description du projet: The objectives of this study are to: 1. Quantify formation, stability, timing and decay of rubble fields, effects of ice rubble on reducing ice loads and provide guidance on optimal rubble field extent; 2. Give guidance on safe access on rubble and/or the ability to clear rubble. A variety of techniques will be used to profile the rubble. The non-intrusive methods include using an optical rangefinder to measure distances and a fixed-mounted laser to measure rubble height (or similar surveying equipment). Markers (e.g. red flags) may be placed onto the rubble for photography from the air - markers would be removed before leaving the site. Holes will be drilled in the ice to get a water-level reference for the rubble height as well as for determining the thickness and degree of grounding of the rubble. Additional holes in the ice may be drilled in order to use an underwater video camera to photograph the rubble at the seabed. A sonar system may be used to assess the degree of grounding of the rubble. It is anticipated that the field work will be at one primary site, while other secondary sites may be visited for primarily photography of the rubble field, and potentially some quick surveys of any other sites of interest. The research results will be presented through a number of methods, including the availability of published documents and papers on the CHC website, a plain language summary of the results available for distribution to interested individuals and possibly as part of a larger workshop at the conclusion of the project. All relevant publications will be sent to the Aurora Research Institute library in Inuvik. The fieldwork for this study will be conducted from March 11, 2010 to April 30, 2010.