Fig. 5From: Tools for the efficient analysis of surface waves from active and passive seismic data: exploring an NE-Italy perilagoon area with significant lateral variationsSan Marco dune, penetrometer data at P1 (see map in Fig. 2b). N is the number of blows to make the cone penetrate by 10 cm while using a 10 kg weight dropping from a 30 cm height, while NSPT are the values converted to the Standard Penetration Test according to the specifications of the manufacturer. The penetrometer test stopped (refusal) at a depth of about 3.7 m because of a very hard layerBack to article page