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Vol. 47, n.1-2, March -June 2006
pp. 145-162

Inversion of interfacial waves for the geotechnical characterisation of marine sediments in shallow water

C. Strobbia, A. Godio and G. De Bacco

Received August 5, 2005; accepted December 21, 2005

Abstract

The diagnostic capability of Scholte and guided wave analysis for estimating the mechanical properties of shallow sediments is considered. The modelling of a theoretical response in 1D conditions and sensitivity analysis permit the assessment of the reliability of the approach; experimental data have been acquired in two test sites using hydrophones disposed on the sea bottom. The sites are characterised by a reduced thickness of sediments (less than 4 meters) in shallow water (2 to 15 meters) with a hard calcareous bedrock. To avoid or reduce some ambiguities in data processing, we integrate the seismic data with information derived from electrical resistivity tomography acquired using electrodes on the seabottom.

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