Geophysical processes and biosphere: article

Аnnotation: The paper provides overview of several seismic inversion approaches and their application to ultra and very high-resolution marine seismic datasets. The importance of seismic inversion is determined by the current demands of offshore engineering industry in estimates of elastic stress-related parameters of near-surface and subbotom sediments. To meet these demands seismic inversion methods that facilitate estimates of elastic properties of the subsurface must be developed for very high-resolution data. Several problems prevent successful application of seismic inversion to high-resolution datasets. Firstly, borehole measurements that are routinely applied to constrain seismic inversion are almost always absent for the offshore near-surface. Secondly, ultra and very high-resolution seismic data are acquired in high frequency ranges and low-frequency information is absent in such datasets. Elaboration of seismic inversion methods for very high-resolution data is important both for practical and scientific purposes. In the paper, we share our experience in application of acoustic post-stack inversion and AVA pre-stack inversion to ultra and very high-resolution marine seismic datasets.