Field investigation of winter thermo- and hydrodynamics in a small Karelian lake
During late winter (18 March-7 April 1994), temperature and current measurements were made in Lake Vendyurskoe, Russia, including three surveys at six cross sections of the lake. Also, the temperature profile evolution was registered with two thermistor chains at two stations (bottom depths of 7.6 a...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.585.7070 2023-05-15T17:01:10+02:00 Field investigation of winter thermo- and hydrodynamics in a small Karelian lake Lars Bengtsson Joakim Malm Arkady Terzhevik Michail Petrov Pjotr Boyarinov Er Glinsky Nikolqj Palshin The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.7070 http://www.aslo.org/lo/toc/vol_41/issue_7/1502.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.7070 http://www.aslo.org/lo/toc/vol_41/issue_7/1502.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_41/issue_7/1502.pdf text ftciteseerx 2016-01-08T13:15:08Z During late winter (18 March-7 April 1994), temperature and current measurements were made in Lake Vendyurskoe, Russia, including three surveys at six cross sections of the lake. Also, the temperature profile evolution was registered with two thermistor chains at two stations (bottom depths of 7.6 and 11.5 m) until the time of ice breakup. Temperature gradients were measured just below the ice cover and in the upper 1 O-cm layer of the bottom sediments. The isotherms were found to be almost horizontal and evenly spaced vl:rtically, so no conditions for large-scale, density-induced currents existed. The heat flux from sediments to water ranged from 0.6 to 2.0 W m-2. These values were inversely related to the depth. The heat flux from water to ice ranged from 0.7 to 1.2 W rn2. When water heating from solar radiation penetration became apparent, this flux increased by a factor of two. When solar radiation increased, convection occurred in the upper layers of the water column. When solar radiation heating became significant at the beginning of spring, the average net heat flux at the ice-water interface during daytime was 7.7 W m-2. Weak currents (few mm s-l) with a seiche-like character were observed, which most likely resulted from ice-cover oscillations. Winter thermo- and hydrodynamics in dimictic lakes Text karelia* karelian Unknown |
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Open Polar |
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English |
description |
During late winter (18 March-7 April 1994), temperature and current measurements were made in Lake Vendyurskoe, Russia, including three surveys at six cross sections of the lake. Also, the temperature profile evolution was registered with two thermistor chains at two stations (bottom depths of 7.6 and 11.5 m) until the time of ice breakup. Temperature gradients were measured just below the ice cover and in the upper 1 O-cm layer of the bottom sediments. The isotherms were found to be almost horizontal and evenly spaced vl:rtically, so no conditions for large-scale, density-induced currents existed. The heat flux from sediments to water ranged from 0.6 to 2.0 W m-2. These values were inversely related to the depth. The heat flux from water to ice ranged from 0.7 to 1.2 W rn2. When water heating from solar radiation penetration became apparent, this flux increased by a factor of two. When solar radiation increased, convection occurred in the upper layers of the water column. When solar radiation heating became significant at the beginning of spring, the average net heat flux at the ice-water interface during daytime was 7.7 W m-2. Weak currents (few mm s-l) with a seiche-like character were observed, which most likely resulted from ice-cover oscillations. Winter thermo- and hydrodynamics in dimictic lakes |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Lars Bengtsson Joakim Malm Arkady Terzhevik Michail Petrov Pjotr Boyarinov Er Glinsky Nikolqj Palshin |
spellingShingle |
Lars Bengtsson Joakim Malm Arkady Terzhevik Michail Petrov Pjotr Boyarinov Er Glinsky Nikolqj Palshin Field investigation of winter thermo- and hydrodynamics in a small Karelian lake |
author_facet |
Lars Bengtsson Joakim Malm Arkady Terzhevik Michail Petrov Pjotr Boyarinov Er Glinsky Nikolqj Palshin |
author_sort |
Lars Bengtsson |
title |
Field investigation of winter thermo- and hydrodynamics in a small Karelian lake |
title_short |
Field investigation of winter thermo- and hydrodynamics in a small Karelian lake |
title_full |
Field investigation of winter thermo- and hydrodynamics in a small Karelian lake |
title_fullStr |
Field investigation of winter thermo- and hydrodynamics in a small Karelian lake |
title_full_unstemmed |
Field investigation of winter thermo- and hydrodynamics in a small Karelian lake |
title_sort |
field investigation of winter thermo- and hydrodynamics in a small karelian lake |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.7070 http://www.aslo.org/lo/toc/vol_41/issue_7/1502.pdf |
genre |
karelia* karelian |
genre_facet |
karelia* karelian |
op_source |
http://www.aslo.org/lo/toc/vol_41/issue_7/1502.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.585.7070 http://www.aslo.org/lo/toc/vol_41/issue_7/1502.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766054221039271936 |