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Ice conditions in the Råne river

Bengtsson, Lars LU (1978) 5th IAHR International Symposium on Ice Problems 2.
Abstract
Ice observations were made in the Rane River 1974-1978. Observations of formation of ice, growth of ice, critical velocities, hydrodynamic stability, supercooled water, ice production in rapids and breakup were theoretically analyzed. Depending on the water velocity an ice cover formed after 40-100 negative °C-degree-days. The growth of ice took place at a static growth when the water velocity was below 0.25 m/sec. However, due to hydrodynamic conditions, the growth might stop early in the winter. Hydrodynamic conditions in the field were well described by the equation suggested by Pariset-Hausser. Supercooling down to -0.10oC was observed. The supercooling was found to depend on the water velocity. The production of ice in a... (More)
Ice observations were made in the Rane River 1974-1978. Observations of formation of ice, growth of ice, critical velocities, hydrodynamic stability, supercooled water, ice production in rapids and breakup were theoretically analyzed. Depending on the water velocity an ice cover formed after 40-100 negative °C-degree-days. The growth of ice took place at a static growth when the water velocity was below 0.25 m/sec. However, due to hydrodynamic conditions, the growth might stop early in the winter. Hydrodynamic conditions in the field were well described by the equation suggested by Pariset-Hausser. Supercooling down to -0.10oC was observed. The supercooling was found to depend on the water velocity. The production of ice in a 400-meter-long small river rapid was found to be about 15000 m3/year. Observed and calculated discharge at break up agreed. (Less)
Please use this url to cite or link to this publication:
author
alternative title
Isförhållanden i Råne älv
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Water Engineering, Vattenteknik
host publication
Proceedings of the 5th IAHR International Symposium on Ice Problems
editor
Bengtsson, Lars
volume
2
publisher
Luleå University of Technology
conference name
5th IAHR International Symposium on Ice Problems
conference location
Luleå, Sweden
conference dates
1978-08-07 - 1978-08-09
language
English
LU publication?
no
additional info
Godkänd; 1978; 20080507 (ysko) 2021-02-11T15:01:09.758+01:00 NV - 1978:12
id
4d1cffc2-401b-455e-ae1b-74fb42576ba0
alternative location
https://www.iahr.org/library/info?pid=28652
date added to LUP
2023-10-02 15:11:15
date last changed
2023-10-17 14:18:23
@inproceedings{4d1cffc2-401b-455e-ae1b-74fb42576ba0,
  abstract     = {{Ice observations were made in the Rane River 1974-1978. Observations of formation of ice, growth of ice, critical velocities, hydrodynamic stability, supercooled water, ice production in rapids and breakup were theoretically analyzed. Depending on the water velocity an ice cover formed after 40-100 negative °C-degree-days. The growth of ice took place at a static growth when the water velocity was below 0.25 m/sec. However, due to hydrodynamic conditions, the growth might stop early in the winter. Hydrodynamic conditions in the field were well described by the equation suggested by Pariset-Hausser. Supercooling down to -0.10oC was observed. The supercooling was found to depend on the water velocity. The production of ice in a 400-meter-long small river rapid was found to be about 15000 m3/year. Observed and calculated discharge at break up agreed.}},
  author       = {{Bengtsson, Lars}},
  booktitle    = {{Proceedings of the 5th IAHR International Symposium on Ice Problems}},
  editor       = {{Bengtsson, Lars}},
  keywords     = {{Water Engineering; Vattenteknik}},
  language     = {{eng}},
  publisher    = {{Luleå University of Technology}},
  title        = {{Ice conditions in the Råne river}},
  url          = {{https://www.iahr.org/library/info?pid=28652}},
  volume       = {{2}},
  year         = {{1978}},
}