منابع مشابه
Multiparameter two-dimensional inversion of scattered teleseismic body waves 1. Theory for oblique incidence
This is the first paper in a three-part series that examines formal inversion of the teleseismic P wave coda for discontinuous variations in elastic properties beneath dense, threecomponent, seismic arrays. In this paper, we develop the theoretical framework for a migration method that draws upon the tenets of inverse scattering theory and is amenable to practical implementation. The forward pr...
متن کاملGlobal variation of body‐wave attenuation in the upper mantle from teleseismic P wave and S wave spectra
[1] We constrain the spatial variation of P‐wave (tP*) and S‐wave (tS*) attenuation by inverting 190,000 teleseismic P‐ and S‐wave spectra up to 0.8 Hz. These spectra are derived from 250 deep earthquakes recorded at 880 broadband global and regional network stations. The variance and ratios of tP* and tS* values are consistent with PREM’s upper mantle velocity and Q structures and conventional...
متن کاملInversion for interface structure using teleseismic traveltime residuals
An inversion method is presented for the reconstruction of interface geometry between two or more crustal layers from teleseismic traveltime residuals. The method is applied to 2-D models consisting of continuous interfaces separating constant-velocity layers. The forward problem of determining ray paths and traveltimes between incident wave fronts below the structure and receivers located on t...
متن کاملA Bayesian Nonlinear Inversion of Seismic Body-Wave Attenuation Factors
k is a well-known fact that the uncertainties in measuring relative attenuation factors within a local or regional seismic network are usually high, due to noise of different kinds and unrealistic assumptions. Numerical experiments using nine synthetic seismograms, created using t* values ranging from 0.1 to 0.9 sec, reveal that the commonly used spectral ratio method is strongly affected by th...
متن کاملNormal faulting sequence in the Pumqu-Xainza Rift constrained by InSAR and teleseismic body-wave seismology
Normal faulting earthquakes play an important role in the deformation of continents, and pose significant seismic hazard, yet important questions remain about their mechanics. We use InSAR and bodywave seismology to compute dislocation models and centroid moment solutions for four normal-faulting earthquakes (Mw 5.7–6.2) that occurred in the Pumqu-Xainza Rift (PXR), southern Tibet, a region whe...
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ژورنال
عنوان ژورنال: Bulletin of the Geological Society of Greece
سال: 2018
ISSN: 2529-1718,0438-9557
DOI: 10.12681/bgsg.16854