Tomographic reconstruction of the characteristics of a shallow-water bottom

The paper examines the possibility of applying mode tomography methods to reconstruct shallow-water bottom characteristics using as an example joint reconstruction of the bottom relief and the sound velocity in the bottom. It is shown that the difference in the influence of the inhomogeneity of the relief and sound velocity in the bottom on the mode dispersion dependences make it possible to carry out joint reconstruction of these characteristics in a unified tomographic scheme. The considered method is based on application of the earlier developed band basis, which is convenient for describing the parameters of both the water layer (sound velocity profile, currents) and the bottom characteristics (relief and sound velocity in the bottom). We present the results of numerical simulation of the reconstruction of a soft bottom relief, as well as joint reconstruction of the relief and inhomogeneities of the sound velocity in the bottom in the proposed scheme.