Base de données de recherche des TNO

étiquettes: physical sciences, water quality, arctic rivers, climate change, hydrology, water chemistry

Objectif(s): To study the six largest rivers in the Arctic: the Mackenzie and Yukon Rivers in North America, and the Ob', Yenisey, Lena, and Kolyma Rivers in Russia.

Description du projet: The Arctic Great Rivers Observatory project studies the six largest rivers in the Arctic: the Mackenzie and Yukon Rivers in North America, and the Ob', Yenisey, Lena, and Kolyma Rivers in Russia. The research team are interested in how climate change is impacting Arctic rivers. The team will take measurements of the concentration of naturally-occurring chemicals (like carbon and nitrogen) and try to determine whether or not they are changing. The research team plan to collect water samples from the Mackenzie River near the Tsiigehtchic ferry crossing. Samples will be collected on six days per year, once every other month. Samples will be collected from boat or through the ice at the well-established site used by the Water Survey of Canada. Water will be collected by immersing a sample bottle directly underneath the water surface, or by using a bottle that is able to collect a water sample from a discrete depth. Samples will be filtered and frozen or refrigerated in plastic bottles. The team will also measure water temperature, pH, dissolved oxygen concentration, and water conductivity. On each sampling day, less than 16 litres of water will be collected. The team will not be collecting any fish or invertebrates. Water samples will be collected six times per year from the Mackenzie River near Tsiigehtchic, using a boat or through the ice. Sampling will be overseen by staff at the Aurora Research Institute, and the team have had discussions with the Gwichya Gwich'in Renewable Resource Council (RRC) about involving local community members in the sampling efforts. The Gwichya Gwich'in RRC requested that the research team provide a presentation to the community and to school children. The research team are happy to accommodate this request. The research team will present the result to community members in Tsiigehtchic, through community presentations, presentations to school kids, or via any other venue. Results of this project are also made available on the project website (www.arcticgreatrivers.org). The fieldwork for this study will be conducted from January 19, 2017 to December 31, 2017.