Publication Date:
2017-04-04
Description:
The 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.
Description:
Published
Description:
605-613
Description:
4.1. Metodologie sismologiche per l'ingegneria sismica
Description:
JCR Journal
Description:
reserved
Keywords:
teleseismic events
;
04. Solid Earth::04.06. Seismology::04.06.04. Ground motion
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
