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A Method to Estimate Reflection and Directional Spread Using Rotary Spectra from Accelerometers on Large Ice Floes

Sutherland, Graig ; Rabault, Jean ; Jensen, Atle

Journal of atmospheric and oceanic technology, 2017-05, Vol.34 (5), p.1125-1137 [Periódico revisado por pares]

Boston: American Meteorological Society

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Título:
A Method to Estimate Reflection and Directional Spread Using Rotary Spectra from Accelerometers on Large Ice Floes
Autor: Sutherland, Graig ; Rabault, Jean ; Jensen, Atle
Assuntos: Accelerometers ; Advantages ; Components ; Directional spectra ; Dissipation ; Estimates ; Evolution ; Frameworks ; Gravity ; Heaving ; Ice floes ; Length ; Mathematics ; Measurement ; Methods ; Pack ice ; Pitch (inclination) ; Reflectance ; Reflection ; Rolling motion ; Satellite communications ; Scattering ; Sea ice ; Sensors ; Spectra ; Spread reflection ; Wave direction ; Wave dissipation ; Wave power ; Wave spectra ; Wavelength
É parte de: Journal of atmospheric and oceanic technology, 2017-05, Vol.34 (5), p.1125-1137
Descrição: 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.
Editor: Boston: American Meteorological Society
Idioma: Inglês;Norueguês

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A Method to Estimate Reflection and Directional Spread Using Rotary Spectra from Accelerometers on Large Ice Floes

Sutherland, Graig ; Rabault, Jean ; Jensen, Atle

Boston: American Meteorological Society

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