Sediment entrainment into ice via suspended ice crystals

Authors
Citation
Kj. Eidsvik, Sediment entrainment into ice via suspended ice crystals, COLD REG SC, 28(3), 1998, pp. 143-159
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Civil Engineering
Journal title
COLD REGIONS SCIENCE AND TECHNOLOGY
ISSN journal
0165-232X → ACNP
Volume
28
Issue
3
Year of publication
1998
Pages
143 - 159
Database
ISI
SICI code
0165-232X(199812)28:3<143:SEIIVS>2.0.ZU;2-5
Abstract
Modelling sediment entrainment into suspended ice crystals is developed. Fi rst principles and standard closures for turbulence and particle interactio ns are applied as much as possible. Ice crystal production and coagulations are estimated to be sensitive processes. Predictions suggest that there ar e many ways in which sediment entrainment into ice can be avoided. However, such entrainment can also become efficient. If the sea temperature is init ially near freezing and there is a strong cold wind episode, there is a del ay of the order of tu*/D approximate to 30 before the sediment-into-ice-cry stal process becomes effective. This may easily be smaller than the typical duration of weather episodes, so that wind forced flows may probably entra in sediments into the ice. (C) 1998 Elsevier Science B.V. All rights reserv ed.