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Temperature and salt content regimes in three shallow ice-covered lakes 2. Heat and mass fluxes

Malm, J.; Terzhevik, A.; Bengtsson, Lars LU ; Boyarinov, P.; Glinsky, A.; Palshin, N. and Petrov, M. (1997) In Nordic Hydrology 28(2). p.129-152
Abstract
A field study was carried out in three small shallow ice-covered lakes to study heat and mass fluxes and their spatial and temporal variability. During the main part of the winter, the heat flux at the ice-water interface, being of the order 0.5-1, W m(-2), was dominated by conduction from water to ice and did not show any significant variations in time or space. The heat flux from sediments to water was the main source for the lake water heating during early and mid-winter, being depth-dependent and 1-4.5 W m(-2) in early winter, and 0.5-3 W m(-2) in late winter. A heat transport from shallow regions to deep parts was shown to occur during the winter, being of the same order as the vertical fluxes, and should thus be accounted for in any... (More)
A field study was carried out in three small shallow ice-covered lakes to study heat and mass fluxes and their spatial and temporal variability. During the main part of the winter, the heat flux at the ice-water interface, being of the order 0.5-1, W m(-2), was dominated by conduction from water to ice and did not show any significant variations in time or space. The heat flux from sediments to water was the main source for the lake water heating during early and mid-winter, being depth-dependent and 1-4.5 W m(-2) in early winter, and 0.5-3 W m(-2) in late winter. A heat transport from shallow regions to deep parts was shown to occur during the winter, being of the same order as the vertical fluxes, and should thus be accounted for in any attempt to predict the temperature evolution in an ice covered lake. The salt flux from sediments was found to be of the order 1-10 x 10(-10) kg m(-2) s(-1). A comparison of this flux with salt content changes indicates that the former is of the same order as the horizontal salt flux which is directed from shallow regions to the deeper parts of a lake during winter. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nordic Hydrology
volume
28
issue
2
pages
129 - 152
publisher
IWA Publishing
external identifiers
  • scopus:0031437343
ISSN
1996-9694
DOI
10.2166/nh.1997.008
language
English
LU publication?
yes
id
b3f163a6-59a4-4248-bd11-ecac5c3280c1 (old id 2595373)
date added to LUP
2012-05-31 17:08:49
date last changed
2017-08-06 03:40:35
@article{b3f163a6-59a4-4248-bd11-ecac5c3280c1,
  abstract     = {A field study was carried out in three small shallow ice-covered lakes to study heat and mass fluxes and their spatial and temporal variability. During the main part of the winter, the heat flux at the ice-water interface, being of the order 0.5-1, W m(-2), was dominated by conduction from water to ice and did not show any significant variations in time or space. The heat flux from sediments to water was the main source for the lake water heating during early and mid-winter, being depth-dependent and 1-4.5 W m(-2) in early winter, and 0.5-3 W m(-2) in late winter. A heat transport from shallow regions to deep parts was shown to occur during the winter, being of the same order as the vertical fluxes, and should thus be accounted for in any attempt to predict the temperature evolution in an ice covered lake. The salt flux from sediments was found to be of the order 1-10 x 10(-10) kg m(-2) s(-1). A comparison of this flux with salt content changes indicates that the former is of the same order as the horizontal salt flux which is directed from shallow regions to the deeper parts of a lake during winter.},
  author       = {Malm, J. and Terzhevik, A. and Bengtsson, Lars and Boyarinov, P. and Glinsky, A. and Palshin, N. and Petrov, M.},
  issn         = {1996-9694},
  language     = {eng},
  number       = {2},
  pages        = {129--152},
  publisher    = {IWA Publishing},
  series       = {Nordic Hydrology},
  title        = {Temperature and salt content regimes in three shallow ice-covered lakes 2. Heat and mass fluxes},
  url          = {http://dx.doi.org/10.2166/nh.1997.008},
  volume       = {28},
  year         = {1997},
}