Imaging algorithms, accuracy and resolution in delay time tomography

In this chapter we will discuss a linearized tomographic method for the simultaneous inversion of body wave velocity, earthquake relocation parameters and station corrections using delay time data. We apply this method to investigate how well two different iterative least squares algorithms are able to solve tomographic problems in which many model parameters and a large amount of data are used. Especially we will demonstrate how estimates of accuracy and spatial resolution can be obtained and discuss the different image-distorting effects of the employed algorithms in the results of tomographic mapping.