Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3259
AuthorsFerretti, G.* 
Massa, M.* 
Isella, L.* 
Eva, C.* 
TitleSite amplification effects based on teleseismic wave analysis: the case of Pellice Valley (Piedmont, Italy)
Issue Date2007
Series/Report no.2/97 (2007)
DOI10.1785/0120060064
URIhttp://hdl.handle.net/2122/3259
Keywordsteleseismic events
Subject Classification04. Solid Earth::04.06. Seismology::04.06.04. Ground motion 
AbstractThe investigation of local amplification phenomena by seismic signal analysis is a fundamental step in carefully defining the seismic response of an area. In this study we investigate the use of teleseismic recordings in assessing seismicwave amplification in the Pellice Valley (northwestern Alps, Italy). Assuming that teleseismic P waves are sensitive to the deep structure of a basin, we deal with the computation of horizontal-to-vertical spectral ratios (HVSRs) and with the estimate of teleseismic P-wave arrival time delays and P-wave amplifications with respect to a reference site. The reliability of the HVSR results obtained by considering teleseismic signals is confirmed by the agreement with the results coming from both the HVSR of noise and HVSR of S wave of local events methods. Strong correlation between the P-wave arrival time delays and the relative P-wave amplifications with respect to thickness of the low-velocity layers and the geometry of the bedrock is found.
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