Laboratory Experiments on Internal Solitary Waves in Ice‐Covered Waters

Type Article
Date 2019-11
Language English
Author(s) Carr Magda1, Sutherland Peter2, Haase Andrea3, Evers Karl‐ulrich4, Fer Ilker5, Jensen Atle6, Kalisch Henrik7, Berntsen Jarle7, Părău Emilian8, Thiem Øyvind9, Davies Peter10
Affiliation(s) 1 : School of Mathematics, Statistics & Physics Newcastle University Newcastle upon Tyne, UK
2 : IFREMER, CNRS, IRD, Laboratoire d'Océanographie Physique et Spatiale (LOPS), IUEM Université de Bretagne Occidentale Brest ,France
3 : HSVA, Hamburgische Schiffbau‐Versuchsanstalt GmbH Hamburg , Germany
4 : solutions4arctic Hamburg , Germany
5 : Geophysical Institute University of Bergen Bergen, Norway
6 : Department of Mathematics University of Oslo Oslo ,Norway
7 : Department of Mathematics University of Bergen Bergen ,Norway
8 : School of Mathematics University of East Anglia Norwich, UK
9 : Norwegian Public Roads Administration Bergen, Norway
10 : Department of Civil Engineering University of Dundee Dundee, UK
Source Geophysical Research Letters (0094-8276) (American Geophysical Union (AGU)), 2019-11 , Vol. 46 , N. 21 , P. 12230-12238
DOI 10.1029/2019GL084710
Keyword(s) internal solitary waves, sea ice, Arctic Ocean
Abstract

Internal solitary waves (ISWs) propagating in a stably stratified two-layer fluid in which the upper boundary condition changes from open water to ice are studied for grease, level, and nilas ice. The ISW-induced current at the surface is capable of transporting the ice in the horizontal direction. In the level ice case, the transport speed of, relatively long ice floes, nondimensionalized by the wave speed is linearly dependent on the length of the ice floe nondimensionalized by the wave length. Measures of turbulent kinetic energy dissipation under the ice are comparable to those at the wave density interface. Moreover, in cases where the ice floe protrudes into the pycnocline, interaction with the ice edge can cause the ISW to break or even be destroyed by the process. The results suggest that interaction between ISWs and sea ice may be an important mechanism for dissipation of ISW energy in the Arctic Ocean.

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How to cite 

Carr Magda, Sutherland Peter, Haase Andrea, Evers Karl‐ulrich, Fer Ilker, Jensen Atle, Kalisch Henrik, Berntsen Jarle, Părău Emilian, Thiem Øyvind, Davies Peter (2019). Laboratory Experiments on Internal Solitary Waves in Ice‐Covered Waters. Geophysical Research Letters, 46(21), 12230-12238. Publisher's official version : https://doi.org/10.1029/2019GL084710 , Open Access version : https://archimer.ifremer.fr/doc/00593/70532/