Seafloor topography, ocean infragravity waves, and background Love and Rayleigh waves
نویسندگان
چکیده
منابع مشابه
Comparative analysis on sensitivities of Love and Rayleigh waves
Love waves are generally less employed than Rayleigh waves in near-surface shear-wave (S-wave) investigations because acquiring S-wave data is not as easy as acquiring P-wave data. The dispersion of Love waves, however, is independent of Poisson’s ratio. This character can be the valuable basis to improve the S-wave velocity imaging. The sensitivity of earth properties to the dispersion curve o...
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[1] Long-period oceanic infragravity (IG) waves (ca. [250, 50] s period) are generated along continental coastlines by nonlinear wave interactions of storm-forced shoreward propagating swell. Seismic observations on the Ross Ice Shelf show that free IG waves generated along the Pacific coast of North America propagate transoceanically to Antarctica, where they induce a much higher amplitude she...
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[1] Oceanic infragravity waves are investigated as a possible source of seismic free oscillations, often referred to as the ‘‘hum’’ of the Earth, using a numerical model of depth-independent, nondispersive, long-wave dynamics with a forcing from nonlinear interactions among the primary wind waves (including swell). Because of near-resonant amplification, the structure of the primary-wave forcin...
متن کاملRayleigh Waves
The table of source phase differences between Rayle igh and Love waves which was described in Pa r t I and used in Pa r t 2 is presented in a concise form for the case of a surface focus.
متن کاملResonance Expansions and Rayleigh Waves
In this paper we study expansions of solutions of the wave equation in a compact set with initial data supported in the same set. We consider the general framework of the “black box scattering” introduced by Sjöstrand and Zworski [SjZ] (see sec. 2). In particular, this includes the clasical case of scattering by obstacle with Dirichlet or Neumann boundary conditions and metric perturbations of ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2010
ISSN: 0148-0227
DOI: 10.1029/2009jb006678