Mathematics – Logic
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1313n&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 10, p. 1313-1316
Mathematics
Logic
Algorithms, Geological Faults, Seismic Waves, Tomography, Wave Propagation, Mathematical Models, Propagation Velocity, Ray Tracing, Refraction
Scientific paper
We performed numerical experiments to show that Extended Information Criterion (EIC) can be utilized for determining an optimum model in velocity reconstruction problems, in which a wavefront tracing method was employed for finding the minimum travel time raypath. First, travel times were calculated from a specified velocity model, and simulated data were produced by adding random error to the travel times. Velocity models were then reconstructed from the simulated data by employing a Simultaneous Iterative Reconstruction Technique (SIRT) starting from different initial models. Finally, EIC values were calculated for each reconstructed velocity model at every iteration, and were used for selecting an optimum velocity model. Resutls indicated that EIC provides an objective method for selecting an optimum solution from a suite reconstructions obtained from different initial models.
Lei Xing-Lin
Nishizawa Osamu
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