Open AccessOPTIMIZATION ALGORITHM ACCURACY AND STABILITY STUDY OF AVOA INVERSION OF PP+PS REFLECTIONS IN AZIMUTHALLY ANISOTROPIC MEDIA
Author(s) -
Г. А. Дугаров,
Т. В. Нефедкина
Publication year - 2019
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2019-2-3-122-130
Subject(s) - inversion (geology) , anisotropy , robustness (evolution) , algorithm , nonlinear system , optimization algorithm , seismogram , stability (learning theory) , computer science , optics , physics , mathematics , geology , mathematical optimization , seismology , biochemistry , chemistry , quantum mechanics , machine learning , gene , tectonics
The article investigates the accuracy and stability of the optimization algorithm for joint nonlinear AVOA inversion of PP+PS reflections in an anisotropic HTI medium. Algorithm was tested using synthetic seismograms. The analysis of objective functions is performed in order to study the sensitivity of the method to the determination of different parameters of the anisotropic model. Using two types of waves significantly increases the noise robustness of the method and the accuracy of all parameters estimation.