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Measurements and modelling of the water : ice heat flux in natural waters
| Title: | Measurements and modelling of the water : ice heat flux in natural waters |
| Authors: | Shirasawa, Kunio Browse this author →KAKEN DB | | Leppäranta, Matti Browse this author | | Kawamura, Toshiyuki Browse this author →KAKEN DB | | Ishikawa, Masao Browse this author | | Takatsuka, Toru Browse this author |
| Keywords: | heat flux from water | | floating ice | | growth | | melting | | measurements |
| Issue Date: | 2006 |
| Publisher: | IAHR |
| Journal Title: | Proceedings of the 18th IAHR International Symposium on Ice |
| Volume: | 1 |
| Start Page: | 85 |
| End Page: | 91 |
| Abstract: | 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. |
| Description: | The 18th IAHR International Symposium on Ice. 28 August - 1 September 2006. Sapporo, Japan. |
| Conference Name: | IAHR International Symposium on Ice |
| Conference Sequence: | 18 |
| Conference Place: | Sapporo |
| Type: | proceedings |
| URI: | http://hdl.handle.net/2115/38935 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 白澤 邦男
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