SESS 2_16022011_TPR3.pub Il Quaternario Italian Journal of Quaternary Sciences 24, (Abstract AIQUA, Roma 02/2011), Congresso AIQUA Il Quaternario Italiano: conoscenze e prospettive Roma 24 e 25 febbraio 2011 Ms. received: Testo ricevuto il PASSIVE SEISMIC STRATIGRAPHY IN THE PONTINA PLAIN (LATIUM, ITALY): FIRST DATA Lorenzo Liperi, Fabio Meloni, Pietro Zizzari, Giacomo Catalano, Fulvio Colasanto & Antonio Gerardi Regione Lazio, Direzione Regionale Ambiente, Area Difesa del Suolo, Roma Corresponding author: F. Colasanto ABSTRACT: Catalano G. et al., Passive seismic stratigraphy in the Pontina Plain (Latium, Italy): first data. (IT ISSN 0394-3356, 2011) The Department of Soil Protection of the Lazio Region is using passive seismic stratigraphy (H/V signal methodology) in Pontina Plain, in areas characterized by sink-Holes. The aim is to reconstruct the evolution of the carbonatic bedrock. RIASSUNTO: Catalano G. et al., Misure di sismica passiva nella Pianura Pontina (Lazio, Italia): primi risultati. (IT ISSN 0394-3356, 2011) L’Area Difesa del Suolo della Regione Lazio sta effettuando misure di rumore tramite Tromino, in aree spesso interessate dal fenomeno sinkhole, confrontando i dati con le stratigrafie di sondaggi inseriti nel database regionale, per ricostruire l’andamento del substrato carbonatico. Key words: passive seismic, H/V, Pontina Plain Parole chiave: sismica passiva, H/V, Pianura Pontina The Department of Soil Protection of the Lazio Region has long been interested in improving the standards of land management through seismic and geological prevention. Since many years there are ongoing projects on seismic micro-zoning and sinkholes, both in well-defined areas that at a regional level. This also requires the constant acquisition of new data and the use of new technologies, to offer design enhancements. Using the methodology H/V signals through the acquisition of noise (by TROMINO) is currently tested in a sample area of Lazio (the Pontine Plain) in order to reconstruct the carbonate basement. There have been numerous measurements of noise in areas frequently affected by sinkhole phenomena by comparing the data with the known stratigraphic logs of the area (regional database). The measurements were made in area and along alignments. The vertical and areal distribution of amplification peak vs frequencies has allowed the reconstruction of maps of distribution of frequencies and, by comparison with the stratigraphic logs, to reconstruct the evolution of the carbonate bedrock. REFERENCES CASTELLANO S., MULARGIA F. & BIANCONI L. (2005) – Passive Seismic Stratigraphy: A New Efficient, Economic Tecnique. Geologia Tecnica e Ambientale, 5/2005, 76-102. 113 January 15, 2011 15 gennaio 2011