On 1-D traveltime tomography and linear inhomogeneity

TL;DR

This paper introduces a 1-D traveltime tomography technique for seismic P-wave velocity estimation, incorporating linear inhomogeneity parameters, validated through synthetic experiments and real VSP data comparison.

Contribution

It presents a novel 1-D tomography method combined with linear inhomogeneity parameter estimation and compares it with a two-parameter velocity model approach.

Findings

The method produces accurate and stable model parameters.

Synthetic experiments confirm the reliability of the approach.

Application to VSP data demonstrates practical effectiveness.

Abstract

In this article, we develop a 1-D traveltime tomography method to calculate the seismic P-wave velocity of a medium. We use the results of 1-D tomography to obtain linear inhomogeneity parameters in a specific layer. To get the trustworthiness of the method, we perform several synthetic experiments. We show that the inverted model parameters are reasonably accurate and stable. To examine the results of linear inhomogeneity parameters using a different method, we also develop an inversion method based on a two-parameter velocity model. Finally, we apply both the methods to Vertical Seismic Profile (VSP) data and do a study comparing their results.