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- Title
A Method to Estimate Reflection and Directional Spread Using Rotary Spectra from Accelerometers on Large Ice Floes.
- Authors
Sutherland, Graig; Rabault, Jean; Jensen, Atle
- Abstract
The directional wave spectra in sea ice are an important aspect of wave evolution and can provide insights into the dominant components of wave dissipation, that is, dissipation due to scattering or dissipation due to viscous processes under the ice. A robust method for the measurement of directional wave spectra parameters in sea ice from a three-axis accelerometer-or a heave, pitch, and roll sensor-is proposed. The method takes advantage of certain aspects of sea ice and makes use of rotary spectra techniques to provide model-free estimates for the mean wave direction, directional spread, and reflection coefficient. The method is ideally suited for large ice floes-that is, where the ice floe length scale is much greater than the wavelength-but a framework is provided to expand the parameter space where the method may be effective.
- Subjects
ICE floes; ACCELEROMETERS; SEA ice; OPTICAL reflection; SCATTERING (Physics)
- Publication
Journal of Atmospheric & Oceanic Technology, 2017, Vol 34, Issue 5, p1125
- ISSN
0739-0572
- Publication type
Article
- DOI
10.1175/JTECH-D-16-0219.1