Attenuation of Love and Rayleigh waves across the Atlantic.
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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15 صفحه اولLateral Heterogeneity and Azimuthal Anisotropy of the Upper Mantle: Love and Rayleigh Waves 100-250 s
The lateral heterogeneity and apparent anisotropy of the upper mantle are studied by measuring Rayleigh and Love wave phase velocities in the period range 100-250 s. Spherical harmonic descriptions of the lateral heterogeneity are obtained for order and degree up to 1 = m = 10. Slow regions are evident at the East Pacific Rise, northeast Africa, Tibet, Tasman Sea, southwestern North America, an...
متن کاملSensitivity of Near-Surface Shear-Wave Velocity Determination from Rayleigh and Love Waves
Rayleigh and Love waves recorded on seismic-shot gathers can be used to determine the thickness and shear-wave velocity of shallow subsurface layers. After the data are transformed into the k-f domain, the dispersion curve for each of the phases can be picked from maxima on the contour plot. This dispersion curve is then inverted for the velocities and depths. Different frequencies in the dispe...
متن کاملGlobal anisotropic phase velocity maps for higher mode Love and Rayleigh waves
S U M M A R Y It is well established that the Earth’s uppermost mantle is anisotropic, but there are no clear observations of anisotropy in the deeper parts of the mantle. Surface waves are well suited to observe anisotropy since they carry information about both radial and azimuthal anisotropy. Fundamental mode surface waves, for commonly used periods up to 200 s, are sensitive to structure in...
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ژورنال
عنوان ژورنال: Journal of Physics of the Earth
سال: 1981
ISSN: 1884-2305,0022-3743
DOI: 10.4294/jpe1952.29.119