Optimal resolution surface wave Rayleigh tomography with
Rayleigh wave tomography in the North Atlantic: high resolution images of the Iceland, Azores and Eifel mantle plumes
... The anomaly associated with the Azores is 4% to 7% slow with respect to PREM at 75–150 km depth and extends from about 258N to 458N along the ridge axis. Compared to the anomaly associated with Iceland, the Azores ...
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Focused Rayleigh wave EMAT for characterisation of surface breaking defects
... Figure 17: Transverse scan results of the real defect (figure 4). below the main beam near the focal point, giving a well-focused illumination signal with a minimum beam width at the focal point of 3.0 ± 0.5 mm. A ...
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Focused Rayleigh wave EMAT for characterisation of surface-breaking defects
... Figure 17: Transverse scan results of the real defect (figure 4). below the main beam near the focal point, giving a well-focused illumination signal with a minimum beam width at the focal point of 3.0 ± 0.5 mm. A ...
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3D Monte Carlo Surface Wave Tomography
... any resolution at depths below 15 km in this case since the results simply reflect the prior ...no resolution, so the lower most Voronoi cell always combines regions where we have no resolution with ...
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Near-surface structure of the North Anatolian Fault zone from Rayleigh and Love wave tomography using ambient seismic noise
... Our model shows low S-wave velocity to the north of the NAFZ, associated with faulted marine clastic sediments near Izmit (Akbayram et al., 2016) and with the Adapazari sedi- mentary basin, which we estimate to ...
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Surface wave tomography of the Barents Sea and surrounding regions
... seismological surface wave data, including historical data that were not used before for this ...spatial resolution of the seismological model and dis- covery of intriguing features of upper-mantle ...
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Broadband Surface Wave Tomography of Ireland, Britain and Other Regions
... Teleseismic Rayleigh-wave phase-velocity A B S T R A C T Cape Verde is an intraplate archipelago located in the Atlantic Ocean about 560 km west of Senegal, on an ∼ 130 Ma old oceanic ...of ...
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Seismic anisotropy of Precambrian lithosphere : Insights from Rayleigh wave tomography of the eastern Superior Craton
... these resolution tests provide further assurance that the inversion method as applied to our data set is able to generate credible tomo- graphic models without significantly distorting each component or inducing ...
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Broadband ambient noise surface wave tomography across the United States
... The Rayleigh wave 25 s phase speed map and the 40 s group speed map have maximum sensitivities at about 50 km depth and similar kernels, as Figure 17 ...slower wave speeds, as ...
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Crustal and uppermost mantle shear-wave velocity structure beneath the Middle East from surface-wave tomography
... 2.2 Surface wave tomography In order to constrain group-velocity variations at different periods, we construct 2-D group- velocity maps from our path-averaged ...an optimal resolution ...
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Steps in lithospheric thickness within eastern Australia, evidence from surface wave tomography
... seismic surface wave tomographic model and calculations of the horizontal gradient of shear wave ...improving resolution in continental Australia. Through comparisons with surface ...
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Imaging Torfajökull's Magmatic Plumbing System With Seismic Interferometry and Phase Velocity Surface Wave Tomography
... noise tomography to image the magmatic system beneath Torfajökull ...retrieve Rayleigh waves, and we introduce a method to estimate the reliability of the retrieved surface ...of surface ...
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Surface wave tomography across Afar, Ethiopia: crustal structure at a rift triple junction zone
... analyze Rayleigh wave group velocity from 250 regional earthquakes recorded by 40 broadband stations to study the crustal structure across Afar and adjacent plateau regions in northern ...obtain ...
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A Method to Estimate Spatial Resolution in 2 D Seismic Surface Wave Tomographic Problems
... spatial resolution in surface wave tomography ...the surface wave studies in the seismological literature, the improvement of spatial resolution is associated with the ...
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An SVD in Spherical Surface Wave Tomography
... Parametrizing surface wave tomographic models with harmonic spherical splines.. Geophys.[r] ...
Scattering of a Rayleigh Wave by the Edge of a Thin Surface Layer
... Rather, the layer could be treated as a second elastic continuum, and exact solutions to the field equations in both the layer and the substrate could be obtain[r] ...
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Analysis of Rayleigh wave interactions for surface crack characterization
... detecting Rayleigh waves, with the transmitter and receiver separated by 150 mm and working in “pitch-catch” ...the surface of aluminium bar containing a surface crack, as shown in Figure ...the ...
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On Propagation of Rayleigh Type Surface Wave in a Micropolar Piezoelectric Medium
... general surface wave solutions in the ...stress-free surface of the half-space. A secular equation for Rayleigh type surface wave is ...non-dimensional wave speed of the ...
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Rayleigh wave scattering at the foot of a mountain
... Not much theoretical study is available on the problem of scattering of elastic waves due to an irregular boundary of finite dlmenslon Recently Momol (1980, 82) has studied the problem o[r] ...
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OBLIQUE RAYLEIGH WAVE SCATTERING BY A CYLINDRICAL CAVITY
... free surface and on the cavity wall are expressed in terms of these three ...incident wave is a Rayleigh wave is described and the boundary conditions applied to yield an infinite system of ...
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