| Reference Type | Journal (article/letter/editorial) |
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| Title | Observations on the effects of frost on beach sediments at Rimouski, lower St. Lawrence Estuary, Québec |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Bourget, Edwin | Author |
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| Year | 1977 (August 1) | Volume | 14 |
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| Issue | 8 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e77-148Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 475479 | Long-form Identifier | mindat:1:5:475479:8 |
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| GUID | 0 |
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| Full Reference | Bourget, Edwin (1977) Observations on the effects of frost on beach sediments at Rimouski, lower St. Lawrence Estuary, Québec. Canadian Journal of Earth Sciences, 14 (8) 1732-1739 doi:10.1139/e77-148 |
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| Plain Text | Bourget, Edwin (1977) Observations on the effects of frost on beach sediments at Rimouski, lower St. Lawrence Estuary, Québec. Canadian Journal of Earth Sciences, 14 (8) 1732-1739 doi:10.1139/e77-148 |
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| In | (1977, August) Canadian Journal of Earth Sciences Vol. 14 (8) Canadian Science Publishing |
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| Abstract/Notes | Freezing of beach sediment during exposure to cold air and subsequent thawing upon immersion have been analyzed in a strong tidal environment, near Rimouski in the St. Lawrence Estuary (Québec). Temperature data, recorded at different depths in the sediment over a 25-h period above the high water mark and following a sudden drop of air temperature to −6 °C, indicate that temperatures in the top 15 cm of the beach dropped below the freezing point of seawater (<−1.36 °C). At the mid-tide level station, which was alternately exposed to air and immersed, freezing temperatures were observed to a depth of approximately 5 cm. Observations show that the surface sediment became ice-cemented to a corresponding depth. Temperature changes on exposure to air and immersion were rapid in the surface sandy layer (about 5 cm) and slower in the underlying coarser sediment. Temperature changes were barely perceptible at low tide level and no ice-cemented sediment was observed. Observations on the frozen beach showed that waves undermined the ice-cemented surface sediment and eventually eroded away this frozen layer of beach material. |
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