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Field study on currents in a shallow, ice‐covered lake

Malm, Joakim LU ; Bengtsson, Lars LU ; Arkady, Terzhevik ; Pjotr, Boyarinov ; Glinsky, Alexander ; Palshin, Nikolai and Michail, Petrov (1998) In Limnology and Oceanography 43(7). p.1669-1679
Abstract
A field study on current structure and circulation characteristics in Lake Vendyurskoe, a small, shallow, icecovered lake in Karelia, Russia, is presented. The current velocity magnitudes were generally found to be small. The most pronounced currents had an oscillating character, with velocity amplitudes on the order of millimeters per second. The oscillation period, obtained from spectral density calculations, corresponded to that of a barotropic uninodal seiche. The seichelike nature of the current oscillations was supported by the results from analysis of icelevel fluctuations, giving identical periods and a phase shift of one‐fourth the period between the two types of oscillations.

Mean currents measured during the winter were... (More)
A field study on current structure and circulation characteristics in Lake Vendyurskoe, a small, shallow, icecovered lake in Karelia, Russia, is presented. The current velocity magnitudes were generally found to be small. The most pronounced currents had an oscillating character, with velocity amplitudes on the order of millimeters per second. The oscillation period, obtained from spectral density calculations, corresponded to that of a barotropic uninodal seiche. The seichelike nature of the current oscillations was supported by the results from analysis of icelevel fluctuations, giving identical periods and a phase shift of one‐fourth the period between the two types of oscillations.

Mean currents measured during the winter were on the order of millimeters per second. Because Lake Vendyurskoe does not have any significant river inflow or outflow during winter, the most probable cause of these currents is horizontal temperature (pressure) gradients. Scaling analysis indicated that these currents are geostrophic. This was supported by theoretical estimates, based on observed horizontal temperature gradients, being of the same order as the observed currents. The mean current velocities increased considerably after spring convection from <1 to several millimeters per second. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Limnology and Oceanography
volume
43
issue
7
pages
11 pages
publisher
ASLO
external identifiers
  • scopus:0031773679
ISSN
1939-5590
DOI
10.4319/lo.1998.43.7.1669
language
English
LU publication?
yes
id
5c677bd1-a57e-47ea-a58b-2bfe4fcf5ba8
date added to LUP
2019-10-26 00:37:15
date last changed
2022-03-10 21:08:49
@article{5c677bd1-a57e-47ea-a58b-2bfe4fcf5ba8,
  abstract     = {{A field study on current structure and circulation characteristics in Lake Vendyurskoe, a small, shallow, icecovered lake in Karelia, Russia, is presented. The current velocity magnitudes were generally found to be small. The most pronounced currents had an oscillating character, with velocity amplitudes on the order of millimeters per second. The oscillation period, obtained from spectral density calculations, corresponded to that of a barotropic uninodal seiche. The seichelike nature of the current oscillations was supported by the results from analysis of icelevel fluctuations, giving identical periods and a phase shift of one‐fourth the period between the two types of oscillations.<br>
<br>
Mean currents measured during the winter were on the order of millimeters per second. Because Lake Vendyurskoe does not have any significant river inflow or outflow during winter, the most probable cause of these currents is horizontal temperature (pressure) gradients. Scaling analysis indicated that these currents are geostrophic. This was supported by theoretical estimates, based on observed horizontal temperature gradients, being of the same order as the observed currents. The mean current velocities increased considerably after spring convection from &lt;1 to several millimeters per second.}},
  author       = {{Malm, Joakim and Bengtsson, Lars and Arkady, Terzhevik and Pjotr, Boyarinov and Glinsky, Alexander and Palshin, Nikolai and Michail, Petrov}},
  issn         = {{1939-5590}},
  language     = {{eng}},
  number       = {{7}},
  pages        = {{1669--1679}},
  publisher    = {{ASLO}},
  series       = {{Limnology and Oceanography}},
  title        = {{Field study on currents in a shallow, ice‐covered lake}},
  url          = {{http://dx.doi.org/10.4319/lo.1998.43.7.1669}},
  doi          = {{10.4319/lo.1998.43.7.1669}},
  volume       = {{43}},
  year         = {{1998}},
}