|Title||2022William-Kennedy expedition: Nunatsiavut Coastal Interaction Project (NCIP)|
|Licence||Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences.|
|Author||Limoges, A; Normandeau, A; Eamer, J B R; Van Nieuwenhove, N; Atkinson, M; Sharpe, H; Audet, T; Carson, T; Nochasak, C; Pijogge, L; Winters, J|
|Source||Geological Survey of Canada, Open File 8994, 2023, 92 pages, https://doi.org/10.4095/332085 Open Access|
|Publisher||Natural Resources Canada|
|Province||Newfoundland and Labrador|
|Lat/Long WENS|| -62.7058 -60.6403 56.9269 56.1386|
|Subjects||Science and Technology; marine geology; coastal erosion; sea ice; ecosystems|
|Illustrations||tables; location maps; photographs; screen captures; satellite imagery; diagrams; charts; stratigraphic charts|
|Program||Marine Geoscience for Marine Spatial Planning|
|Released||2023 08 29|
The accelerating Arctic cryosphere decline severely impacts the land on which northern communities live through the presence of coastal and marine geohazards and coastal erosion,
which further places the cultural heritage of coastal archaeological sites at risks. Sea ice decline also compromises the formation of polynyas, with unknown consequences for the regional ecosystems. From the 10th to the 18th of July 2022, a
scientific cruise onboard the research vessel William-Kennedy allowed the collection of a suite of samples and data from the marine coastal environment of Nain, Nunatsiavut. In total, 42 surface sediment samples, 29 sediment cores, 41
conductivity-temperature-depth (CTD) profiles, 13 water samples, 24 phytoplankton nets and 13 zooplankton nets were collected. The cruise allowed the deployment of 2 moorings equipped with sediment traps in Nain Bay and within deeper offshore waters.
Triangulation showed that the 2 moorings were correctly placed near their target locations. Drop camera transects were deployed in Webb Bay and at the easternmost tip of Paul’s Island to image the seabed and study benthic habitats. Finally, acoustic
sub-bottom profiling along the entire study area allowed a high-resolution characterization of the stratigraphy of the seafloor, helped identifying locations for sediment sampling and inferring geological information about the depositional
environments. The material and data collected during the research cruise will be key to 1) evaluating the productivity and dynamics of small recurring polynyas (i.e., rattles) on diverse timescales, 2) assessing marine and coastal geohazards (e.g.,
landslides) in relation to the deglacial history of Nain, 3) investigate the seabed geomorphology in Webb Bay and linkages with permafrost and sea-level changes and 3) conducting benthic habitat characterization. Co-led by the University of New
Brunswick (UNB) and Natural Resources Canada (NRCan), this cruise was done in collaboration with the Government of Nunatsiavut, Université du Québec à Montréal, Université Laval, Dalhousie University and Memorial University, and was funded by the
Natural Sciences and Engineering Research Council of Canada (NSERC) and NRCan.
|Summary||(Plain Language Summary, not published)|
Cruise report from the 2022 William-Kennedy scientific cruise.