Seismo-stratigraphic models of shear wave velocities have been obtained at representative geological sites of Nocera Umbra, that is: the historical centre for scaglia formations; the cemetery, for eluvial and alluvial soils; Bagni, for travertine deposit; Isola and Le Molina, for debris fan material, alluvial soils and silty and marly formation. The signals, recorded along seismic retraction spreadings, have been analysed by FTAN and Hedgehog methods. A very good agreement has been found with down-hole measurements in nearby drillings.
Seismo-stratigraphic models of shear wave velocities have been obtained at representative geological sites of Nocera Umbra, that is: the historical centre for scaglia formations; the cemetery, for eluvial and alluvial soils; Bagni, for travertine deposit; Isola and Le Molina, for debris fan material, alluvial soils and silty and marly formation. The signals, recorded along seismic retraction spreadings, have been analysed by FTAN and Hedgehog methods. A very good agreement has been found with down-hole measurements in nearby drillings.
Moreover, the October 5 and 14, 1997 earthquakes, recorded at two ENEL-SSN accelerometric stations, Nocera set on alluvial deposits investigated in this paper, and Biscontini on marly calcareous rock, have been studied. It turns out that the observed response spectra have a very good match with those computed with standard lD approach (SHAKE program), by using the lowest velocity profile among the Hedgehog solutions.
Seismo-stratigraphic mo …
AUTORI: Nunziata C., Chimera G., Natale M., Panza G.F. RIG ANNO: 2000 NUMERO: 4 Numero di pagina: 31
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