Late winter – early spring sedimentation off the Great Whale River, southeastern Hudson Bay
Sediment traps were used to measure particle-settling fluxes in serial moorings offshore of Great Whale River (Hudson Bay), both under the late winter sea-ice cover and during and after breakup. Before breakup, the settling fluxes ranged between 0.25 and 2 g cm −2 100 a −1 , increasing from April to...
| Published in: | Canadian Journal of Earth Sciences |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1988
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/e88-091 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-091 |
| Summary: | Sediment traps were used to measure particle-settling fluxes in serial moorings offshore of Great Whale River (Hudson Bay), both under the late winter sea-ice cover and during and after breakup. Before breakup, the settling fluxes ranged between 0.25 and 2 g cm −2 100 a −1 , increasing from April to May in response to the progressively larger under-ice algal biomass. Fluxes also increased with depth. During and after breakup, including the early summer period of peak runoff, sedimentation rates increased to values of up to 33 g cm −2 100 a −1 . These fluxes agree with the mean sedimentation rate determined from 210 Pb activities in the underlying sediments. |
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