The seismic microzonation of san gregorio through a multidisciplinary approach. Seismic amplification in a stiff site

TitleThe seismic microzonation of san gregorio through a multidisciplinary approach. Seismic amplification in a stiff site
Publication TypeMonografia
Year of Publication2015
AuthorsGiulio, G.D., Amoroso S., Naccio D.D., Falcucci E., Gori S., Hailemikael S., Vassallo M., Ciampaglia A., De Luca G., Grosso A.D., Marcantonio P.D., D’Onofrio K., Porreca M., Trotta D., Villani Fulvia, and Milana G.
Series TitleEngineering Geology for Society and Territory - Volume 5: Urban Geology, Sustainable Planning and Landscape Exploitation
Number of Pages1137-1141
PublisherSpringer International Publishing
ISBN Number9783319090481; 9783319090474
Abstract

The village of San Gregorio (L’Aquila, Italy) was severely damaged by the April 6, 2009 earthquake. San Gregorio is situated at the base of a carbonate relief bounded by the Aterno river alluvial plain. The geological features of the area are very complex: jointed carbonate bedrock, cemented gravels and alluvial fan crop out in the village. Co-seismic ground fractures were seen along SW dipping active fault segments crossing San Gregorio. We integrated the microzonation studies with new geological, geotechnical and geophysical data for supporting the reconstruction planning of the village. Noise measurements show strong and polarized peaks in the horizontal-to-vertical spectral ratios (H/V) in the 3-7 Hz frequency band. Interestingly, the alluvial fan and the outcropping rock masses show both H/V peaks. To understand the influence of rock mass joint condition on site effect, we performed structural surveys on carbonate bedrock to look for a possible correlation between rock fracturing and ground-motion amplification. © Springer International Publishing Switzerland 2015.

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84944563419&doi=10.1007%2f978-3-319-09048-1_217&partnerID=40&md5=59a303563197df0c2b2ec3822e6cae80
DOI10.1007/978-3-319-09048-1_217