We consider a Bayesian model for doing lithology–fluid prediction from prestack (amplitude versus offset) seismic data. Related to the Bayesian model, we look at two inversion algorithms. The first algorithm simulates from the posterior distribution with no approximations, but the algorithm is quite computer demanding. The second inversion algorithm introduces an approximation in the likelihood...

Electronic reference Eymeric Morin, Florent Hinschberger, Jean-Jacques Macaire, Isabelle Gay-Ovéjéro and Caroline Chartin, « Significance of the correlation between the electrical conductivity dataset and lithology in Pleni-Lateglacial and Holocene alluvial archives. A case study: the Choisille catchment (SW Paris Basin, France) », ArcheoSciences [Online], 33 (suppl.) | 2009, Online since 30 Oc...

Algorithms for inversion of seismic prestack AVO data into lithology-fluid classes in a vertical profile are evaluated. The inversion is defined in a Bayesian setting where the prior model for the lithology-fluid classes is a Markov chain, and the likelihood model relates seismic data and elastic material properties to these classes. The likelihood model is approximated such that the posterior ...

Groundwater is closely related to hydrogeological structure and hydro-lithology, which mainly refers the spatial distributions properties of environment where groundwater occurs. To analyze constraints hydro-lithology on regional resources in Eastern Henan Plain, China, we reconstructed three-dimensional (3D) hierarchical models at two scales, structural hydro-lithological models, using cross-s...

The south-west coast of the Isle of Wight (see Figure 4.1 for general location) is geomorphologically rich in features of interest. It contains examples of most of the cliff types undergoing active erosion described from other GCR sites. The site demonstrates well how coastal processes have produced different cliff forms related not only to variations of lithology and geological structure, but ...