Inversion of Rayleigh wave phase and group velocities by simulated annealing

Details Inversion of Rayleigh wave phase and group velocities by simulated annealing Inversion of Rayleigh wave phase and group velocities by simulated annealing

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pepi..122....3m&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 122, Issue 1-2, p. 3-17.

Physics

6

Scientific paper

A joint inversion of regionalized phase and group velocities of fundamental mode Rayleigh waves is performed by means of a simulated annealing scheme which makes use of some thermodynamic analogies based on the Gibbs' distribution. The correlations and the uncertainties on shear-wave velocities defining the elastic model are estimated by using a procedure based on the same thermodynamic analogies. As a relevant feature, the simulated annealing algorithm permits reducing the usual dependence of the solution on the sometimes arbitrary starting model. A shortcoming linked to the use of this procedure for solving an inversion problem is the necessity of a previous empirical determination of some parameters controlling the annealing process. With this aim, a simulation of a joint inversion of synthetic surface wave dispersion data has been performed. After that, path-averaged velocity dispersion curves corresponding to a Hercynian area of the Iberian Peninsula have been inverted to derive two possible crust and upper mantle elastic structures. Whereas, the first structure has been deduced by considering as unknown variables the shear velocities of the stratified Earth model, the second has been obtained also including the respective layer thicknesses. Both structures are compared with shear velocity and Qβ models derived by the stochastic inversion procedure in previous studies and from the same Rayleigh waves dataset. Finally, advantages and shortcomings of the inversion of phase and group velocity data by means of simulated annealing are discussed.

Affiliated with

Also associated with

No associations

Rating

Inversion of Rayleigh wave phase and group velocities by simulated annealing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Inversion of Rayleigh wave phase and group velocities by simulated annealing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inversion of Rayleigh wave phase and group velocities by simulated annealing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1115484