Freshwater Seepage Into Sediments of the Shelf, Shelf Edge, and Continental Slope of the Canadian Beaufort Sea
Data and Resources
Additional Info
| Field | Value |
|---|---|
| Creator | R. Gwiazda, C. K. Paull, S. R. Dallimore, H. Melling, Y. K. Jin, J. K. Hong, M. Riedel, E. Lundsten, K. Anderson, K. Conway |
| Summary | Long-term warming of the continental shelf of the Canadian Beaufort Sea caused by the transgression associated with the last deglaciation may be causing decomposition of relict offshore subsea permafrost and gas hydrates. To evaluate this possibility, pore waters from 118 sediment cores up to 7.3-m long were taken on the shelf and slope and analyzed for chloride concentrations and δ180 and δD composition. The results confirm ongoing decomposition of offshore permafrost and suggest extensive current groundwater discharge far from the coast. |
| Local Relevance | The continental shelf of the Canadian Beaufort Sea may be a major source of subsea permafrost and gas hydrate decomposition, which would impact our understanding of the extent of landscape carbon storage in the NWT, and its potential to be released into the atmosphere. |
| Notes | |
| Tags | Permafrost,Research,Geology,Chemistry |
| Geographic Region | Beaufort Delta |
| Release Date | 2018-08-16 |
| Last Modified Date | 2018-08-16 |
| Funding Program |