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Vol. 50, n.1, March 2009
pp. 59-69

Petro-physical characterization of shallow aquifers by using AVO and theoretical approaches

U. TINIVELLA, F. ACCAINO, M. GIUSTINIANI and S. PICOTTI

Received: August 12, 2007; accepted: September 10, 2007

Abstract

We present the results obtained by the Amplitude Versus Offset analysis of 2D and 3D high-resolution seismic data acquired along the resurgence line located in the Friuli- Venezia Giulia plain (NE Italy), in order to characterize an important multilayered aquifer. The Amplitude Versus Offset analysis was performed to extract the Poisson ratio contrast, which provides useful information to characterize the aquifers petrophysical properties, such as the fluid content.The velocity model, which was obtained from a tomographic approach for 2D seismic data and an iterative updating procedure involving pre-stack depth migration, residual move-out analysis and seismic reflection tomography for 3D data, was used to obtain density and porosity maps.

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