| Title | Erosion mitigation for Tuktoyaktuk, NWT |
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| Author | Duckett, F; Wiebe, J; Stuckey, S; Whalen, D ; Arenson, L |
| Source | Arctic Change 2020 Conference book of abstracts/Compilation de résumés pour la Conférence Arctic; by ArcticNet; Arctic Science vol. 7, issue 1, 2020 p. 1  Open Access |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20200764 |
| Publisher | Canadian Science Publishing |
| Meeting | Arctic Change 2020 Conference; December 7-10, 2020 |
| Document | serial |
| Lang. | English |
| Media | digital |
| File format | pdf |
| Province | Northwest Territories |
| NTS | 107C/07 |
| Area | Tuktoyaktuk; Tuktoyaktuk Island |
| Lat/Long WENS | -134.0000 -133.0000 69.5000 69.2500 |
| Subjects | environmental geology; surficial geology/geomorphology; Nature and Environment; Science and Technology; permafrost; ground ice; coastal environment; coastal erosion; coastal management; shoreline
changes; floods; flood potential; modelling; sea level changes; climate effects; sea ice; ground temperatures; subsidence; International cooperation; Collaborative research; mitigation; Mitigation; Climate change; Northern Canada; Community
infrastructures |
| Program | Climate Change Geoscience Coastal Infrastructure |
| Released | 2021 03 15 |
| Abstract | Baird & Associates with sub-consultant BGC Engineering was retained in 2018 to develop an erosion mitigation plan for the Hamlet of Tuktoyaktuk and Tuktoyaktuk Island. A preferred concept was selected
by the Community for final design. In 2020, the Community received funding from the Federal Government to develop final designs for erosion mitigation. This paper will provide an overview of design criteria, community engagement, physical modeling at
the National Research Council Canadian Hydraulics Centre in Ottawa and design development for climate change. The community of Tuktoyaktuk is situated on a low-lying peninsula that is vulnerable to coastal erosion and flooding, resulting in the loss
of buildings and housing, and inundation during surge events. Shoreline erosion rates along the Tuktoyaktuk Hamlet shoreline are in the range of 0.8 m/year and 1.7 m/year along Tuktoyaktuk Island. Much of Tuktoyaktuk Hamlet and most of Tuktoyaktuk
Island will be lost to erosion by the year 2050, without substantial intervention. Erosion is exacerbated by climate change impacts including: higher water levels, increased wave exposure, longer ice-free season and permafrost degradation. Relative
sea level rise at Tuktoyaktuk, including ground subsidence, is projected to reach 0.37 m by 2050 and 1.03 m by 2100 under the RCP8.5 scenario 95th percentile. Efforts have been made to protect the shoreline with varying levels of success. The
objective of the project is to develop a longer term, comprehensive mitigation approach considering climate change impacts. The need for adaptive solutions that allow for adjustments in the future, in response to climate change has been prioritized.
Geothermal modelling has demonstrated the high hazard potential for permafrost degradation and associated land settlement, and the need for solutions that can accommodate differential settlement. Creating employment opportunities for the Community is
a priority. |
| Summary | (Plain Language Summary, not published)
The community of Tuktoyaktuk is situated on a low-lying peninsula that is vulnerable to coastal erosion and flooding, resulting in the loss of buildings
and housing, and inundation during surge events. Shoreline erosion rates along the Tuktoyaktuk Hamlet shoreline are in the range of 0.8 m/year and 1.7 m/year along Tuktoyaktuk Island. Much of Tuktoyaktuk Hamlet and most of Tuktoyaktuk Island will be
lost to erosion by the year 2050, without substantial intervention.Baird & Associates with sub-consultant BGC Engineering was retained in 2018 to develop an erosion mitigation plan for the Hamlet of Tuktoyaktuk and Tuktoyaktuk Island. This paper will
provide an overview of design criteria, community engagement, physical modeling and design development for climate change. |
| GEOSCAN ID | 328145 |
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