Measurements and modelling of the water : ice heat flux in natural waters
抄録
The 18th IAHR International Symposium on Ice. 28 August - 1 September 2006. Sapporo, Japan.
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.
収録刊行物
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- Proceedings of the 18th IAHR International Symposium on Ice
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Proceedings of the 18th IAHR International Symposium on Ice 1 85-91, 2006
IAHR
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詳細情報 詳細情報について
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- CRID
- 1050001202571275904
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- NII論文ID
- 120006660525
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- HANDLE
- 2115/38935
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- 本文言語コード
- en
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- 資料種別
- conference paper
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- データソース種別
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- IRDB
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