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Abstract In travel time inversion of crosshole seismic tomography , when dealing with real data, the following three issues need to be addressed: how to suppress the effect of data errors, how ...
}}_{\boldsymbol{D}}}$|. Stabilization of the ill-posed problem can be achieved through damping factor |${\varepsilon ^2}$| and smoothing matrix |${{\boldsymbol{W}}_{\boldsymbol{M}}}$|. Damping factor controls ...
position was at 6.5 m depth. Figure 8(b) illustrates the calculated travel time of the XBGPR signal for the FDTD modelling (after correction for geometrical factors ) and the SR modelling. In figure 8(b ...
is preconditioned by using damping factors , obtaining 12 where W is the diagonal matrix of the damping factors , a damping factor can be considered variable for each cell or constant, it depends on the stability ...
of the actual data with a velocity damping coefficient fixed at 500, as previously found, with the damping coefficient for the anisotropy calculation changed many times . The inversion was first run for only ...
and teleseismic travel - time tomography , Phys. Earth planet. Inter. , 253 , 97 – 107 .. https://doi.org/10.1016/j.pepi.2016.02.006 Google Scholar Crossref Search ADS WorldCat Bijwaard H. , Spakman W. , Engdahl E.R ...
arrivals used for the inversion (Kamei et al. 2013). The time - damping is characterized by a decay function exp [−st], where s is the damping variable (also referred to as the Laplace variable ). Adopting ...
arrival times . The quality and quantity of these re-picked phase data allow the 3-D imaging of large parts of the northern half of Iran lithosphere between 0 and 60 km depth. Our new P-wave tomography model ...
of focal depth distribution of relocated earthquakes (Aziz Zanjani et al. 2013), travel time tomography (Bavali et al. 2016) and receiver function studies (Mortezanejad et al. 2013). All of them have found ...
anisotropic media , Geophysics , vol. 74 (pg. WB137 - WB145 ) Google Scholar Crossref Search ADS WorldCat Hole J A , Zelt B C . , 1995 3D finite-difference reflection travel times , Geophys. J. Int. , vol. 121 ...
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