Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; February 1997; v. 87; no. 1; p. 261-264
© 1997 Seismological Society of America
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Nonuniqueness of two-dimensional anisotropic tomography

E. Mochizuki

Department of Earth and Planetary Physics Faculty of Science University of Tokyo, Tokyo 113, Japan

Abstract

If P-wave velocity depends on azimuth, travel-time tomography is nonunique for external sources and receivers. For two dimension, travel-time data can be completely fitted in terms of isotropic P velocity. We obtain analytic expressions that specify the trade-off between anisotropy and heterogeneity.






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