Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8630
Authors: Strollo, A.* 
Parolai, S.* 
Bindi, D.* 
Chiauzzi, L.* 
Pagliuca, R.* 
Mucciarelli, M.* 
Zschau, J.* 
Title: Microzonation of Potenza (Southern Italy) in terms of spectral intensity ratio using joint analysis of earthquakes and ambient noise.
Journal: Bulletin of Earthquake Engineering 
Series/Report no.: 2/10(2012)
Publisher: Springer
Issue Date: 2012
DOI: 10.1007/s10518-011-9256-4
Keywords: site effect
seismic noise
spectral intensity
correlation
Subject Classification04. Solid Earth::04.06. Seismology::04.06.04. Ground motion 
Abstract: A temporary seismic network composed of 11 stations was installed in the city of Potenza (Southern Italy) to record local and regional seismicity within the context of a national project funded by the Italian Department of Civil Protection (DPC). Some stations were moved after a certain time in order to increase the number of measurement points, leading to a total of 14 sites within the city by the end of the experiment. Recordings from 26 local earthquakes (Ml 2.2−3.8 ) were analyzed to compute the site responses at the 14 sites by applying both reference and non-reference site techniques. Furthermore, the Spectral Intensity (SI) for each local earthquake, as well as their ratios with respect to the values obtained at a reference site, were also calculated. In addition, a field survey of 233 single station noise measurements within the city was carried out to increase the information available at localities different from the 14 monitoring sites. By using the results of the correlation analysis between the horizontal-to-vertical spectral ratios computed from noise recordings (NHV) at the 14 selected sites and those derived by the single station noise measurements within the town as a proxy, the spectral intensity correction factors for site amplification obtained from earthquake analysis were extended to the entire city area. This procedure allowed us to provide a microzonation map of the urban area that can be directly used when calculating risk scenarios for civil defence purposes. The amplification factors estimated following this approach show values increasing along the main valley toward east where the detrital and alluvial complexes reach their maximum thickness.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
2012_BEE_Strollo_et_al.pdf2.9 MBAdobe PDF
Show full item record

WEB OF SCIENCETM
Citations

12
checked on Feb 10, 2021

Page view(s) 20

266
checked on Mar 16, 2024

Download(s)

23
checked on Mar 16, 2024

Google ScholarTM

Check

Altmetric