Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice
Lake Pääjärvi in southern Finland freezes over every winter and the ice cover is static. The structure of the ice in the lake has been mapped in 1993–1999. The ice thickness ranged from 31 to 70 cm, and the ice sheet consisted of two layers: columnar or macro grained congelation ice and fine grained...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.580.7461 2023-05-15T16:41:06+02:00 Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice Pekka Kosloff The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.580.7461 http://www.geophysica.fi/pdf/geophysica_2000_36_1-2_233_lepparanta.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.580.7461 http://www.geophysica.fi/pdf/geophysica_2000_36_1-2_233_lepparanta.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geophysica.fi/pdf/geophysica_2000_36_1-2_233_lepparanta.pdf Key words Lake ice structure snow-ice thickness text 2000 ftciteseerx 2016-01-08T13:00:51Z Lake Pääjärvi in southern Finland freezes over every winter and the ice cover is static. The structure of the ice in the lake has been mapped in 1993–1999. The ice thickness ranged from 31 to 70 cm, and the ice sheet consisted of two layers: columnar or macro grained congelation ice and fine grained snow-ice. The snow-ice portion was 10–43 %. The average thicknesses were: 46 cm for total ice, 12 cm for snow-ice and 9 cm for snow. The maximum annual ice thickness showed rather weakly in-creasing level with decreasing mean winter air temperature. The grain size of snow-ice was typically 1–5 mm with maximum 8–9 mm. The congelation ice showed large macrocrystals, some columnar, with di-mensions from 2 cm to more than 10 cm, columns were 2–4 cm in diameter and more than 10 cm in height. Prior to the snow-ice formation the snow layer was compacted in slushing to the fraction of about 2/3. The ice meltwater had the following properties: the conductivity (at 25 oC) was 7–18 µS/cm, pH was 6.1–7.3, and the contents of soluble and suspended matter were 8–18 mg/l and 1.0–2.5 mg/l, respectively. The conductivity and soluble matter contents were 10–20 % of that of the lake water. Text Ice Sheet Unknown Pääjärvi ENVELOPE(23.472,23.472,67.023,67.023) |
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English |
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Key words Lake ice structure snow-ice thickness |
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Key words Lake ice structure snow-ice thickness Pekka Kosloff Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice |
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Key words Lake ice structure snow-ice thickness |
description |
Lake Pääjärvi in southern Finland freezes over every winter and the ice cover is static. The structure of the ice in the lake has been mapped in 1993–1999. The ice thickness ranged from 31 to 70 cm, and the ice sheet consisted of two layers: columnar or macro grained congelation ice and fine grained snow-ice. The snow-ice portion was 10–43 %. The average thicknesses were: 46 cm for total ice, 12 cm for snow-ice and 9 cm for snow. The maximum annual ice thickness showed rather weakly in-creasing level with decreasing mean winter air temperature. The grain size of snow-ice was typically 1–5 mm with maximum 8–9 mm. The congelation ice showed large macrocrystals, some columnar, with di-mensions from 2 cm to more than 10 cm, columns were 2–4 cm in diameter and more than 10 cm in height. Prior to the snow-ice formation the snow layer was compacted in slushing to the fraction of about 2/3. The ice meltwater had the following properties: the conductivity (at 25 oC) was 7–18 µS/cm, pH was 6.1–7.3, and the contents of soluble and suspended matter were 8–18 mg/l and 1.0–2.5 mg/l, respectively. The conductivity and soluble matter contents were 10–20 % of that of the lake water. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Pekka Kosloff |
author_facet |
Pekka Kosloff |
author_sort |
Pekka Kosloff |
title |
Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice |
title_short |
Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice |
title_full |
Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice |
title_fullStr |
Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice |
title_full_unstemmed |
Geophysica (2000), 36(1–2)233–248 The Structure and Thickness of Lake Pääjärvi Ice |
title_sort |
geophysica (2000), 36(1–2)233–248 the structure and thickness of lake pääjärvi ice |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.580.7461 http://www.geophysica.fi/pdf/geophysica_2000_36_1-2_233_lepparanta.pdf |
long_lat |
ENVELOPE(23.472,23.472,67.023,67.023) |
geographic |
Pääjärvi |
geographic_facet |
Pääjärvi |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
http://www.geophysica.fi/pdf/geophysica_2000_36_1-2_233_lepparanta.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.580.7461 http://www.geophysica.fi/pdf/geophysica_2000_36_1-2_233_lepparanta.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766031544543084544 |