Measurements and modelling of the water : ice heat flux in natural waters
Ice in natural waters grows and decays as forced by the fluxes through the upper and lower boundaries. In particular, the flux at the lower boundary -- i.e. the heat flux from the liquid water body into the bottom of the ice sheet -- is not very well known quantity. This question is approached by me...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/38935 2023-05-15T16:40:31+02:00 Measurements and modelling of the water : ice heat flux in natural waters Shirasawa, Kunio Leppäranta, Matti Kawamura, Toshiyuki Ishikawa, Masao Takatsuka, Toru http://hdl.handle.net/2115/38935 eng eng IAHR http://hdl.handle.net/2115/38935 IAHR International Symposium on Ice, 18, Sapporo heat flux from water floating ice growth melting measurements 452 proceedings fthokunivhus 2022-11-18T01:01:48Z Ice in natural waters grows and decays as forced by the fluxes through the upper and lower boundaries. In particular, the flux at the lower boundary -- i.e. the heat flux from the liquid water body into the bottom of the ice sheet -- is not very well known quantity. This question is approached by measurements and mathematical modelling. The data are from Saroma-ko lagoon, a saline lake on the northern coast of Hokkaido, and Lake Pääjärvi, a fresh water basin in southern Finland. Three-dimensional current velocity, temperature and salinity were measured at a fixed depth, and the resulting heat flux was normally 5-10 W/m2 in both basins, a bit more in Saroma. But even in Lake Pääjävi, which is a rather quiet water body in wintertime (total ice coverage with very weak currents) the heat flux from the water is important in the heat budget of the ice sheet. A three-layer (snow/snow-ice/congelation ice) model is used to examine the evolution of ice thickness and temperature. The 18th IAHR International Symposium on Ice. 28 August - 1 September 2006. Sapporo, Japan. Conference Object Ice Sheet Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Saline Lake ENVELOPE(-111.528,-111.528,57.081,57.081) Pääjärvi ENVELOPE(23.472,23.472,67.023,67.023) |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
heat flux from water floating ice growth melting measurements 452 |
spellingShingle |
heat flux from water floating ice growth melting measurements 452 Shirasawa, Kunio Leppäranta, Matti Kawamura, Toshiyuki Ishikawa, Masao Takatsuka, Toru Measurements and modelling of the water : ice heat flux in natural waters |
topic_facet |
heat flux from water floating ice growth melting measurements 452 |
description |
Ice in natural waters grows and decays as forced by the fluxes through the upper and lower boundaries. In particular, the flux at the lower boundary -- i.e. the heat flux from the liquid water body into the bottom of the ice sheet -- is not very well known quantity. This question is approached by measurements and mathematical modelling. The data are from Saroma-ko lagoon, a saline lake on the northern coast of Hokkaido, and Lake Pääjärvi, a fresh water basin in southern Finland. Three-dimensional current velocity, temperature and salinity were measured at a fixed depth, and the resulting heat flux was normally 5-10 W/m2 in both basins, a bit more in Saroma. But even in Lake Pääjävi, which is a rather quiet water body in wintertime (total ice coverage with very weak currents) the heat flux from the water is important in the heat budget of the ice sheet. A three-layer (snow/snow-ice/congelation ice) model is used to examine the evolution of ice thickness and temperature. The 18th IAHR International Symposium on Ice. 28 August - 1 September 2006. Sapporo, Japan. |
format |
Conference Object |
author |
Shirasawa, Kunio Leppäranta, Matti Kawamura, Toshiyuki Ishikawa, Masao Takatsuka, Toru |
author_facet |
Shirasawa, Kunio Leppäranta, Matti Kawamura, Toshiyuki Ishikawa, Masao Takatsuka, Toru |
author_sort |
Shirasawa, Kunio |
title |
Measurements and modelling of the water : ice heat flux in natural waters |
title_short |
Measurements and modelling of the water : ice heat flux in natural waters |
title_full |
Measurements and modelling of the water : ice heat flux in natural waters |
title_fullStr |
Measurements and modelling of the water : ice heat flux in natural waters |
title_full_unstemmed |
Measurements and modelling of the water : ice heat flux in natural waters |
title_sort |
measurements and modelling of the water : ice heat flux in natural waters |
publisher |
IAHR |
url |
http://hdl.handle.net/2115/38935 |
long_lat |
ENVELOPE(-111.528,-111.528,57.081,57.081) ENVELOPE(23.472,23.472,67.023,67.023) |
geographic |
Saline Lake Pääjärvi |
geographic_facet |
Saline Lake Pääjärvi |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
http://hdl.handle.net/2115/38935 IAHR International Symposium on Ice, 18, Sapporo |
_version_ |
1766030916697718784 |