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Percolation of meltwater through a snowpack

Bengtsson, Lars LU (1982) In Cold Regions Science and Technology 6. p.73-81
Abstract
The hydraulics of meltwater percolation through a snowpack is analyzed in some detail. An implicit numerical model is used for determining the meltwater movement. The effect of freezing fronts of the free liquid water in the snowpack is evaluated. It is shown that even after a moderately cold night, it takes several hours of snowmelt before the snowpack again reaches its irreducible liquid content. The meltwater flux front moves very slowly down through the depth, where the liquid water has been refrozen during a preceding night. The time delay between the initiation of snowmelt at the surface and the start of run-off at the base of the snowpack is shown to be determined from a simple continuity reasoning. Finally, a comparison between... (More)
The hydraulics of meltwater percolation through a snowpack is analyzed in some detail. An implicit numerical model is used for determining the meltwater movement. The effect of freezing fronts of the free liquid water in the snowpack is evaluated. It is shown that even after a moderately cold night, it takes several hours of snowmelt before the snowpack again reaches its irreducible liquid content. The meltwater flux front moves very slowly down through the depth, where the liquid water has been refrozen during a preceding night. The time delay between the initiation of snowmelt at the surface and the start of run-off at the base of the snowpack is shown to be determined from a simple continuity reasoning. Finally, a comparison between theory and field measurements is made. (Less)
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author
alternative title
Transport av smältvatten genom att snötäcke
publishing date
type
Contribution to journal
publication status
published
subject
in
Cold Regions Science and Technology
volume
6
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:0020169990
ISSN
0165-232X
DOI
10.1016/0165-232X(82)90046-5
language
English
LU publication?
no
id
b98c5e55-9cc0-4798-8d5c-f274018fc3bf
date added to LUP
2023-06-16 11:08:12
date last changed
2023-06-20 09:34:33
@article{b98c5e55-9cc0-4798-8d5c-f274018fc3bf,
  abstract     = {{The hydraulics of meltwater percolation through a snowpack is analyzed in some detail. An implicit numerical model is used for determining the meltwater movement. The effect of freezing fronts of the free liquid water in the snowpack is evaluated. It is shown that even after a moderately cold night, it takes several hours of snowmelt before the snowpack again reaches its irreducible liquid content. The meltwater flux front moves very slowly down through the depth, where the liquid water has been refrozen during a preceding night. The time delay between the initiation of snowmelt at the surface and the start of run-off at the base of the snowpack is shown to be determined from a simple continuity reasoning. Finally, a comparison between theory and field measurements is made.}},
  author       = {{Bengtsson, Lars}},
  issn         = {{0165-232X}},
  language     = {{eng}},
  pages        = {{73--81}},
  publisher    = {{Elsevier}},
  series       = {{Cold Regions Science and Technology}},
  title        = {{Percolation of meltwater through a snowpack}},
  url          = {{http://dx.doi.org/10.1016/0165-232X(82)90046-5}},
  doi          = {{10.1016/0165-232X(82)90046-5}},
  volume       = {{6}},
  year         = {{1982}},
}