Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan
Lake-ice properties at Lake Abashiri, Hokkaido, Japan, were examined using field observations and a 1-D thermodynamic model to clarify formation processes at mid-latitudes subject to significant snowfall as well as moderate air temperature. At all lake sites examined, the ice comprised two distinct...
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Online Access: | http://hdl.handle.net/2115/63401 https://doi.org/10.1017/jog.2016.57 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/63401 2023-05-15T15:07:09+02:00 Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan Ohata, Yu Toyota, Takenobu Shiraiwa, Takayuki http://hdl.handle.net/2115/63401 https://doi.org/10.1017/jog.2016.57 eng eng Cambridge University Press http://www.igsoc.org/ http://hdl.handle.net/2115/63401 Journal of glaciology, 62(233): 563-578 http://dx.doi.org/10.1017/jog.2016.57 © International Glaciological Society 2016 http://creativecommons.org/licenses/by/4.0/ CC-BY ice thickness measurements lake ice snow/ice surface processes thermodynamic modelling article fthokunivhus https://doi.org/10.1017/jog.2016.57 2022-11-18T01:04:00Z Lake-ice properties at Lake Abashiri, Hokkaido, Japan, were examined using field observations and a 1-D thermodynamic model to clarify formation processes at mid-latitudes subject to significant snowfall as well as moderate air temperature. At all lake sites examined, the ice comprised two distinct layers: a snow ice (SI) layer on top and a congelation ice (CI) layer below. The SI layer occupied as much as 29-73% of the total ice thickness, a much greater fraction than that reported for lakes at Arctic high latitudes. In the model, the CI growth rate was estimated using the traditional heat budget method, while the SI growth rate was calculated assuming the excessive snowfall from the isostatic balance is converted to SI by a snow compression rate (beta) with the surface melting rate added when the surface heat budget becomes positive. By tuning the value of beta to the observational results of SI thickness, the model outcome successfully reproduced the observational thicknesses of CI and SI, and the break-up date of the lake. Essentially, the model findings show how snow and its formation into SI reduce, by about half, the seasonal variability of total ice thickness. Article in Journal/Newspaper Arctic Journal of Glaciology Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Arctic Journal of Glaciology 62 233 563 578 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
ice thickness measurements lake ice snow/ice surface processes thermodynamic modelling |
spellingShingle |
ice thickness measurements lake ice snow/ice surface processes thermodynamic modelling Ohata, Yu Toyota, Takenobu Shiraiwa, Takayuki Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan |
topic_facet |
ice thickness measurements lake ice snow/ice surface processes thermodynamic modelling |
description |
Lake-ice properties at Lake Abashiri, Hokkaido, Japan, were examined using field observations and a 1-D thermodynamic model to clarify formation processes at mid-latitudes subject to significant snowfall as well as moderate air temperature. At all lake sites examined, the ice comprised two distinct layers: a snow ice (SI) layer on top and a congelation ice (CI) layer below. The SI layer occupied as much as 29-73% of the total ice thickness, a much greater fraction than that reported for lakes at Arctic high latitudes. In the model, the CI growth rate was estimated using the traditional heat budget method, while the SI growth rate was calculated assuming the excessive snowfall from the isostatic balance is converted to SI by a snow compression rate (beta) with the surface melting rate added when the surface heat budget becomes positive. By tuning the value of beta to the observational results of SI thickness, the model outcome successfully reproduced the observational thicknesses of CI and SI, and the break-up date of the lake. Essentially, the model findings show how snow and its formation into SI reduce, by about half, the seasonal variability of total ice thickness. |
format |
Article in Journal/Newspaper |
author |
Ohata, Yu Toyota, Takenobu Shiraiwa, Takayuki |
author_facet |
Ohata, Yu Toyota, Takenobu Shiraiwa, Takayuki |
author_sort |
Ohata, Yu |
title |
Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan |
title_short |
Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan |
title_full |
Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan |
title_fullStr |
Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan |
title_full_unstemmed |
Lake ice formation processes and thickness evolution at Lake Abashiri, Hokkaido, Japan |
title_sort |
lake ice formation processes and thickness evolution at lake abashiri, hokkaido, japan |
publisher |
Cambridge University Press |
url |
http://hdl.handle.net/2115/63401 https://doi.org/10.1017/jog.2016.57 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Journal of Glaciology |
genre_facet |
Arctic Journal of Glaciology |
op_relation |
http://www.igsoc.org/ http://hdl.handle.net/2115/63401 Journal of glaciology, 62(233): 563-578 http://dx.doi.org/10.1017/jog.2016.57 |
op_rights |
© International Glaciological Society 2016 http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/jog.2016.57 |
container_title |
Journal of Glaciology |
container_volume |
62 |
container_issue |
233 |
container_start_page |
563 |
op_container_end_page |
578 |
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1766338714537033728 |