Wave front healing and the evolution of seismic delay times

By Guust Nolet, Francis Anthony Dahlen. 2000

151 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/932007a9534c883706abae9c7b6c81a241a53d00

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In Geophysics

Citations in the corpus

Wavefront healing: a banana–doughnut perspective (2001, methodology): “18 are in broad agreement with the theoretical evolution curves for the group delay of a monochromatic Gaussian beam derived by Nolet & Dahlen (2000).”
Whole-mantle radially anisotropic shear velocity structure from spectral-element waveform tomography (2014, methodology): “…and anelastic media, including treatment of phenomena often ignored by approximate modelling techniques (such as wave front healing, e.g. Nolet & Dahlen 2000); (2) excellent numerical dispersion properties (Seriani & Oliveira 2008), critical for modelling surface waves at long…”
The Fresnel volume and transmitted waves (2004, background): “Another nonlinear phenomenon is wavefront healing, wherein the diffraction of waves around velocity perturbations leads to a different imprint of fast velocity anomalies on the wavefronts than slow velocity anomalies (Wielandt, 1987; Nolet and Dahlen, 2000).”
Global P and PP traveltime tomography: rays versus waves (2004, background): “Such a volume surrounding the geometrical ray path is called the first Fresnel zone and is loosely defined as the region where significant constructive interference of seismic energy takes place (Wielandt 1987; Nolet 1987, 1990; Müller et al. 1992; Nolet & Dahlen 2000).”
S40RTS: A degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal-mode splitting function measurements (2011, background): “…of waves with finite wavelengths, new theoretical approaches allow us to invoke volumetric rather than ray-based, sensitivity kernels for body waves (Dahlen et al. 2000; Nolet & Dahen 2000; Zhao et al. 2000) and surface waves (Li & Romanowicz 1995; Marquering et al. 1996; Yoshizawa & Kennett 2002).”
Global surface wave diffraction tomography (2002, background): “[4] The common purpose of the advancements in the scattering theories is to model the effects of the finite zone of sensitivity of a traveling wave and the fact that travel time anomalies are not conserved during the propagation of the wave, a phenomenon known as wave front healing [e.g., Wielandt, ”
Emergence of broadband Rayleigh waves from correlations of the ambient seismic noise (2004, unknown): “Third, the measurements made with the teleseismic surface waves provide averages values over extended areas [e.g., Nolet and Dahlen , 2000; Spetzler et al. , 2002] that limits the resolution of resulting seismic images.”
Monte-Carlo inversion for a global shear-velocity model of the crust and upper mantle (2002, background): “…dispersion maps caused by unmodelled wave-propagation effects such as off-great-circle propagation or scattering (e.g. Wielandt 1987; Laske 1995; Nolet & Dahlen 2000; Spetzler et al. 2001), inconsistencies that may arise from differences in the resolution of different data, errors in a priori…”