Inverkan av värmeuttag på temperatur- och cirkulationsförhållanden i istäckta sjöar
(1982) In Vatten: tidskrift för vattenvård /Journal of Water Management and research 38(1). p.3-16- Abstract (Swedish)
- Three different circulation mechanisms are analyzed: 1) through-flow of a river; 2) wind generated oscillations; and 3) convective currents induced by heat flow from the bottom sediments. The through-flow takes place between the ice and a depth, which is mainly determined by the conditions at the inlet of the river into the lake. Just below this depth there is a sharp thermocline. The water mass below the thermocline is hardly affected at all by the through-flow. The bottom currents generated by the heat flow from the sediments is found to be of the order up to some tenth of metres per day. The stream velocity is shown to be proportional to the heat flow rate to the power 1/3. In discussing expected effects of withdrawal of heat from ice... (More)
- Three different circulation mechanisms are analyzed: 1) through-flow of a river; 2) wind generated oscillations; and 3) convective currents induced by heat flow from the bottom sediments. The through-flow takes place between the ice and a depth, which is mainly determined by the conditions at the inlet of the river into the lake. Just below this depth there is a sharp thermocline. The water mass below the thermocline is hardly affected at all by the through-flow. The bottom currents generated by the heat flow from the sediments is found to be of the order up to some tenth of metres per day. The stream velocity is shown to be proportional to the heat flow rate to the power 1/3. In discussing expected effects of withdrawal of heat from ice covered lakes with and without through-flow and heat with drawal with closed and open systems are disinguished. A thermocline is likely to develop also in lakes with no through-flow. The layer close to the ice with a temperature of almost 0 degree C must increase during the course of the winter. (Less)
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https://lup.lub.lu.se/record/bd4720b1-1f7b-4a52-a829-bc42b6dc5a59
- author
- Bengtsson, Lars LU
- publishing date
- 1982
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Vatten: tidskrift för vattenvård /Journal of Water Management and research
- volume
- 38
- issue
- 1
- pages
- 14 pages
- publisher
- Föreningen Vatten
- ISSN
- 0042-2886
- language
- Swedish
- LU publication?
- no
- id
- bd4720b1-1f7b-4a52-a829-bc42b6dc5a59
- date added to LUP
- 2023-10-02 14:51:59
- date last changed
- 2023-10-24 09:32:13
@article{bd4720b1-1f7b-4a52-a829-bc42b6dc5a59,
abstract = {{Three different circulation mechanisms are analyzed: 1) through-flow of a river; 2) wind generated oscillations; and 3) convective currents induced by heat flow from the bottom sediments. The through-flow takes place between the ice and a depth, which is mainly determined by the conditions at the inlet of the river into the lake. Just below this depth there is a sharp thermocline. The water mass below the thermocline is hardly affected at all by the through-flow. The bottom currents generated by the heat flow from the sediments is found to be of the order up to some tenth of metres per day. The stream velocity is shown to be proportional to the heat flow rate to the power 1/3. In discussing expected effects of withdrawal of heat from ice covered lakes with and without through-flow and heat with drawal with closed and open systems are disinguished. A thermocline is likely to develop also in lakes with no through-flow. The layer close to the ice with a temperature of almost 0 degree C must increase during the course of the winter.}},
author = {{Bengtsson, Lars}},
issn = {{0042-2886}},
language = {{swe}},
number = {{1}},
pages = {{3--16}},
publisher = {{Föreningen Vatten}},
series = {{Vatten: tidskrift för vattenvård /Journal of Water Management and research}},
title = {{Inverkan av värmeuttag på temperatur- och cirkulationsförhållanden i istäckta sjöar}},
volume = {{38}},
year = {{1982}},
}