Environmental monitoring and ice forces on the Nanisivik Wharf
Climate change and its potential impacts upon northern coastal infrastructure are pressing concerns. Changing patterns of sea ice formation, movement and break-up may impact design criteria for such infrastructure. The National Research Council (NRC) with the help of the Department of National Defen...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
[The Conference]
2019
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| Subjects: | |
| Online Access: | https://nrc-publications.canada.ca/eng/view/accepted/?id=3241dfde-9a59-4015-8a02-bc6da689692c https://nrc-publications.canada.ca/eng/view/object/?id=3241dfde-9a59-4015-8a02-bc6da689692c https://nrc-publications.canada.ca/fra/voir/objet/?id=3241dfde-9a59-4015-8a02-bc6da689692c |
| Summary: | Climate change and its potential impacts upon northern coastal infrastructure are pressing concerns. Changing patterns of sea ice formation, movement and break-up may impact design criteria for such infrastructure. The National Research Council (NRC) with the help of the Department of National Defence, Defence Construction Canada and their contractors, installed an ice load monitoring system with two ice load panels at the Nanisivik Naval Facility in September 2017. The main objectives of this work are to correlate ice forces measured on the Nanisivik Naval facility to the environmental conditions in Strathcona Sound. The system comprises a camera to capture the ice conditions in Strathcona Sound, two ice load panels each 27 cm wide (one 2 m and the other 3 m in height), thermistors to monitor the temperatures of the air and both load panels, a pressure transducer to determine the tide level and a data acquisition system. The extreme range of the tide was 3 m and the bottom of the 3 m panel was about 1.5 m below the Lowest Astronomical Tide. Freeze up occurred in Strathcona Sound in mid-October, however no measureable loads were measured by the system until January. During the entire measurement period loads were only indicated on the panels for about 5% of the time. Each panel is divided into 50 cm zones along its height. The three lowest zones of the 3 m panel, which are below the lowest tide range, did not experience any large loading events. The top of the 2 m panel was positioned 1 m above the top of the 3 m panel. The greatest ice pressure observed on a single 27 cm x 50 cm zone occurred on the top zone of the 3 m panel on February 1st, 2018 and it was 1230 kPa. This paper will review the effects of tides and temperature on the measured loading at the wharf. Peer reviewed: Yes NRC publication: Yes |
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