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| Titel |
Sea ice inertial oscillations in the Arctic Basin |
| VerfasserIn |
F. Gimbert, D. Marsan, J. Weiss, N. C. Jourdain, B. Barnier |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 6, no. 5 ; Nr. 6, no. 5 (2012-10-24), S.1187-1201 |
| Datensatznummer |
250003796
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| Publikation (Nr.) |
 copernicus.org/tc-6-1187-2012.pdf |
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| Zusammenfassung |
| An original method to quantify the amplitude of inertial
motion of oceanic and ice drifters, through the introduction
of a non-dimensional parameter M defined from a spectral
analysis, is presented. A strong seasonal dependence of the
magnitude of sea ice inertial oscillations is revealed, in
agreement with the corresponding annual cycles of sea ice
extent, concentration, thickness, advection velocity, and
deformation rates. The spatial pattern of the magnitude of the
sea ice inertial oscillations over the Arctic Basin is also in
agreement with the sea ice thickness and concentration
patterns. This argues for a strong interaction between the magnitude
of inertial motion on one hand, the dissipation of energy
through mechanical processes, and the cohesiveness of the
cover on the other hand. Finally, a significant multi-annual
evolution towards greater magnitudes of inertial oscillations
in recent years, in both summer and winter, is reported, thus
concomitant with reduced sea ice thickness, concentration and
spatial extent. |
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