Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava
Abstract An examination of rates of ice growth, actual ice thickness and the quality of the lake ice profile on Knob Lake, central Labrador—Ungava, showed that all these factors were extremely variable. Three sites were established on Knob Lake from 1957 to 1961, and a similar sequence of sites was...
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Cambridge University Press (CUP)
1962
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Online Access: | http://dx.doi.org/10.1017/s0022143000027660 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000027660 |
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crcambridgeupr:10.1017/s0022143000027660 2024-09-15T18:15:39+00:00 Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava Andrews, J. T. 1962 http://dx.doi.org/10.1017/s0022143000027660 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000027660 en eng Cambridge University Press (CUP) Journal of Glaciology volume 4, issue 33, page 337-347 ISSN 0022-1430 1727-5652 journal-article 1962 crcambridgeupr https://doi.org/10.1017/s0022143000027660 2024-08-07T04:04:05Z Abstract An examination of rates of ice growth, actual ice thickness and the quality of the lake ice profile on Knob Lake, central Labrador—Ungava, showed that all these factors were extremely variable. Three sites were established on Knob Lake from 1957 to 1961, and a similar sequence of sites was established on a neighbouring lake, Maryjo Lake, from 1959 to 1961. Significant variations occurred within a single lake body from site to site, though it was noted that certain patterns of ice growth and quality did occur throughout most years and could be directly related to patterns of snow accumulation on the lake. Variations from lake to lake were found to be least at the centre lake sites, probably because snow cover was always least at these sites and would not affect heat loss so greatly as at the marginal sites. It is suggested that the majority of empirical formulae proposed for lake ice growth are unrealistic for short-term forecasting of ice thickness and growth, and even long-term forecasting, using accumulated degree-days of frost, only gives average values. The only answer is repeated samplings on any lake, until such time that sufficient data are gathered for a full statistical approach based on probability analysis. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 4 33 337 347 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract An examination of rates of ice growth, actual ice thickness and the quality of the lake ice profile on Knob Lake, central Labrador—Ungava, showed that all these factors were extremely variable. Three sites were established on Knob Lake from 1957 to 1961, and a similar sequence of sites was established on a neighbouring lake, Maryjo Lake, from 1959 to 1961. Significant variations occurred within a single lake body from site to site, though it was noted that certain patterns of ice growth and quality did occur throughout most years and could be directly related to patterns of snow accumulation on the lake. Variations from lake to lake were found to be least at the centre lake sites, probably because snow cover was always least at these sites and would not affect heat loss so greatly as at the marginal sites. It is suggested that the majority of empirical formulae proposed for lake ice growth are unrealistic for short-term forecasting of ice thickness and growth, and even long-term forecasting, using accumulated degree-days of frost, only gives average values. The only answer is repeated samplings on any lake, until such time that sufficient data are gathered for a full statistical approach based on probability analysis. |
format |
Article in Journal/Newspaper |
author |
Andrews, J. T. |
spellingShingle |
Andrews, J. T. Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava |
author_facet |
Andrews, J. T. |
author_sort |
Andrews, J. T. |
title |
Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava |
title_short |
Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava |
title_full |
Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava |
title_fullStr |
Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava |
title_full_unstemmed |
Variability of Lake Ice Growth and Quality in the Schefferville Region, Central Labrador—Ungava |
title_sort |
variability of lake ice growth and quality in the schefferville region, central labrador—ungava |
publisher |
Cambridge University Press (CUP) |
publishDate |
1962 |
url |
http://dx.doi.org/10.1017/s0022143000027660 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000027660 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 4, issue 33, page 337-347 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000027660 |
container_title |
Journal of Glaciology |
container_volume |
4 |
container_issue |
33 |
container_start_page |
337 |
op_container_end_page |
347 |
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1810453541467193344 |