VERBI VEnice Research BIbliography

The research line Co.Ri.La. 3.16 “Application of innovative high resolution seismic methodologies to the shallows for the study of the subsoli in the Venice lagoon” is the natural prosecution of the studies carried out by ISMAR-CNR and OGS in the frame of the geological mapping project (CARG) sponsored by APAT and Regione del Veneto. The main objectives of the research are: i) implementation of an high resolution seismic system suitable for shallow water surveys, ii) acquisition of a high resolution seismic data set in order to integrate the knowledge of the recent (last 10.000 years) evolution of the Venice lagoon.
The products of the first two years of activities have been: i) acquisition of a new boat adapted for steaming in very shallow (less than 50 cm) water, ii) implementation and installation on the boat of a single channel high resolution seismic system, iii) acquisition of seismic data in area of particular interest for the recent evolution of the lagoon: the mudflat in the southern lagoon, the Lido and Chioggia inlets, the shelf off the Lido inlet, the southern boundary between the lagoon and the mainland and along the Brenta and Sile rivers. Field activities are still underway and will be completed during 2006, but the already available data, clearly outline the geological evolution of the Holocene and late Pleistocene of the study area: The shelf area, well charatcterized by the Trasgressive System Tract (TST) at the base of the Holocene, and the overlying Highstand System Tract (HST), prograding toward the open sea, The inlets, an highly dynamic environment, as testifyed by the active erosional deeps and by the high asimmetry of the Holocene deposits The lagoon, carachterized by the lateral variability of the deposits, mainly produced by the tidal channels migration