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EMPIRICAL EVALUATION OF THE HORIZONTAL-TO-VERTICAL SPECTRAL RATIO TECHNIQUE: RESULTS FROM THE “SESAME” PROJECT
Author(s)
SESAME Team
Type
Extended abstract
Language
English
Obiettivo Specifico
4.1. Metodologie sismologiche per l'ingegneria sismica
Status
Published
Conference Name
Issued date
August 1, 2004
Conference Location
Vancouver, B.C., Canada
Alternative Location
Keywords
Abstract
In order to empirically evaluate the horizontal-to-vertical (H/V) spectral ratio technique, ambient noise
measurements performed in about two hundred sites mainly in Europe where weak or/and strong motion
data was recorded. Standard Information Sheets (SIS) and earthquake information data were included in
the SESAME [Site EffectS assessment using AMbient Excitations] project database, specially designed to
facilitate data selection. All noise recordings were processed with JSESAME software to calculate (H/V)
spectral ratio, whereas weak and strong motion earthquake recordings were processed with a similarly
standardized procedure. For the latter, (H/V) receiver function for all sites were calculated. Experimental
site transfer functions obtained from earthquake recordings were compared with the (H/V) spectral ratios
from noise recordings in terms of fundamental frequency, amplification bandwidth and amplification
level. Similarities and differences between (H/V) spectral ratio of noise and earthquake recordings are
presented and discussed. In addition, a dense grid of noise measurements were performed within urban
environment of cities affected by strong earthquake (Greece: Thessaloniki, Kalamata, Italy: Palermo). It
seems that the (H/V) spectral ratio may satisfactorily indicate areas favorable to the occurrence of higher
damage in urban environment. However, quantitative correlation between (H/V) spectral ratio properties
and damage distribution (macroseismic intensity, damage grades) in some cases, is difficult to be
established given the complexity of parameters involved.
measurements performed in about two hundred sites mainly in Europe where weak or/and strong motion
data was recorded. Standard Information Sheets (SIS) and earthquake information data were included in
the SESAME [Site EffectS assessment using AMbient Excitations] project database, specially designed to
facilitate data selection. All noise recordings were processed with JSESAME software to calculate (H/V)
spectral ratio, whereas weak and strong motion earthquake recordings were processed with a similarly
standardized procedure. For the latter, (H/V) receiver function for all sites were calculated. Experimental
site transfer functions obtained from earthquake recordings were compared with the (H/V) spectral ratios
from noise recordings in terms of fundamental frequency, amplification bandwidth and amplification
level. Similarities and differences between (H/V) spectral ratio of noise and earthquake recordings are
presented and discussed. In addition, a dense grid of noise measurements were performed within urban
environment of cities affected by strong earthquake (Greece: Thessaloniki, Kalamata, Italy: Palermo). It
seems that the (H/V) spectral ratio may satisfactorily indicate areas favorable to the occurrence of higher
damage in urban environment. However, quantitative correlation between (H/V) spectral ratio properties
and damage distribution (macroseismic intensity, damage grades) in some cases, is difficult to be
established given the complexity of parameters involved.
References
1.
2.
3.
4.
5.
6.
7.
Nogoshi, M. and Igarashi, T. (1971, On the Amplitude Characteristics of Microtremor (Part 2), J.
Seismol. Soc. Japan, 1971; 24: 26-40.
Nakamura, Y., A method for dynamic characteristics estimation of subsurface using microtremor on
the ground surface, QR Railway Tech. Res. Inst., 1989; 30: 25-33.
Bard, P.-Y. "Microtremor Measurements: A tool for site effect estimation?", in the Effects of
Surface Geology on Seismic Motion, (ed. Irikura, Kudo, Okada and Sasatani) Balkema, Rotterdam,
1999, 1251-1279.
WP03 Deliverable D09.03 “Multi-platform H/V Processing Software J-Sesame”, Report, 2003;
available from the web site: http://sesame-fp5.obs.ujf-grenoble.fr/SES_TechnicalDoc.htm.
Bard P-Y. and Haghshenas E., "Comparison of H/V spectral ratio of ambient noise with site-to-
reference spectral ratio of earthquake recordings", sub-Report in the SESAME-WP04
Deliverable16.04, 2004.
Konno, K., and Ohmachi T. "Ground-motion characteristics estimated from spectral ratio between
horizontal and vertical components of microtremor", Bull. Seism. Soc. Am., 1998; 88:1, 228–241.
NEHRP: Recommended provisions for seismic regulations for new buildings and other structures
Part 1: Provisions, FEMA 222A Building Seismic Safety Council, Washington DC, 1994, 290pp.
8.
9.
10.
11.
12.
13.
14.
15.
Theodulidis N., Dimitriu P. and Savvaidis A., "Ambient noise measurements at strong motion
network stations in Greece: Preliminary results of the H/V spectral ratio technique", sub-Report in
the SESAME-WP04 Deliverable16.04, 2004.
Panou A., Theodulidis N., Hatzidimitriou P. and Papazachos C., "Site effects determination using
Ambient Noise Horizontal-to-vertical spectral ratio in the city of Thessaloniki (Northern Greece)",
2004, (submitted for publication).
Theodulidis N., Panou A., "Ambient noise measurements survey in the city of Kalamata (Greece)",
sub-Report in the SESAME-WP04 Deliverable20.04, 2004.
Cultrera G., Azzara R.M., Cara F., D'Anna R., Di Giulio G., Giammarinaro M.S., Passafiume G.,
Rovelli A. and Vallone P., "Microtremor measurements in Palermo, Italy: A comparison with
macroseismic intensity and earthquake ground motion", Proc. 13WCEE , Vancouver, 2004.
Leventakis, G. A. "Microzonation Study of the city of Thessaloniki", PhD., Aristotle University of
Thessaloniki, 2003; 84 pp. (in Greek with an English abstract).
Leventakis G. A., Lekidis V., Papaioannou Ch., Zacharopoulos S., Tsokas G. and Kiratzi A.,
"Equal-Intensity contour map for the city of Kalamata due to September 1986 earthquake", Proc. 1st
Hellenic Conf. of Earthquake Engin. and Engin. Seismology, 1992; 2:321-330 (in Greek).
Guidoboni, E., Mariotti D., Giammarinaro M.S., Rovelli A. “Identification of amplified damage
zones in Palermo, Sicily (Italy), during the earthquakes of the last centuries.” Bull. Seism. Soc.
Am., 2003; 93: 1649-1669.
SESAME Project, "Site EffectS assessment using AMbient Excitations", 2001-2004, http://sesame-
fp5.obs.ujf-grenoble.fr.
2.
3.
4.
5.
6.
7.
Nogoshi, M. and Igarashi, T. (1971, On the Amplitude Characteristics of Microtremor (Part 2), J.
Seismol. Soc. Japan, 1971; 24: 26-40.
Nakamura, Y., A method for dynamic characteristics estimation of subsurface using microtremor on
the ground surface, QR Railway Tech. Res. Inst., 1989; 30: 25-33.
Bard, P.-Y. "Microtremor Measurements: A tool for site effect estimation?", in the Effects of
Surface Geology on Seismic Motion, (ed. Irikura, Kudo, Okada and Sasatani) Balkema, Rotterdam,
1999, 1251-1279.
WP03 Deliverable D09.03 “Multi-platform H/V Processing Software J-Sesame”, Report, 2003;
available from the web site: http://sesame-fp5.obs.ujf-grenoble.fr/SES_TechnicalDoc.htm.
Bard P-Y. and Haghshenas E., "Comparison of H/V spectral ratio of ambient noise with site-to-
reference spectral ratio of earthquake recordings", sub-Report in the SESAME-WP04
Deliverable16.04, 2004.
Konno, K., and Ohmachi T. "Ground-motion characteristics estimated from spectral ratio between
horizontal and vertical components of microtremor", Bull. Seism. Soc. Am., 1998; 88:1, 228–241.
NEHRP: Recommended provisions for seismic regulations for new buildings and other structures
Part 1: Provisions, FEMA 222A Building Seismic Safety Council, Washington DC, 1994, 290pp.
8.
9.
10.
11.
12.
13.
14.
15.
Theodulidis N., Dimitriu P. and Savvaidis A., "Ambient noise measurements at strong motion
network stations in Greece: Preliminary results of the H/V spectral ratio technique", sub-Report in
the SESAME-WP04 Deliverable16.04, 2004.
Panou A., Theodulidis N., Hatzidimitriou P. and Papazachos C., "Site effects determination using
Ambient Noise Horizontal-to-vertical spectral ratio in the city of Thessaloniki (Northern Greece)",
2004, (submitted for publication).
Theodulidis N., Panou A., "Ambient noise measurements survey in the city of Kalamata (Greece)",
sub-Report in the SESAME-WP04 Deliverable20.04, 2004.
Cultrera G., Azzara R.M., Cara F., D'Anna R., Di Giulio G., Giammarinaro M.S., Passafiume G.,
Rovelli A. and Vallone P., "Microtremor measurements in Palermo, Italy: A comparison with
macroseismic intensity and earthquake ground motion", Proc. 13WCEE , Vancouver, 2004.
Leventakis, G. A. "Microzonation Study of the city of Thessaloniki", PhD., Aristotle University of
Thessaloniki, 2003; 84 pp. (in Greek with an English abstract).
Leventakis G. A., Lekidis V., Papaioannou Ch., Zacharopoulos S., Tsokas G. and Kiratzi A.,
"Equal-Intensity contour map for the city of Kalamata due to September 1986 earthquake", Proc. 1st
Hellenic Conf. of Earthquake Engin. and Engin. Seismology, 1992; 2:321-330 (in Greek).
Guidoboni, E., Mariotti D., Giammarinaro M.S., Rovelli A. “Identification of amplified damage
zones in Palermo, Sicily (Italy), during the earthquakes of the last centuries.” Bull. Seism. Soc.
Am., 2003; 93: 1649-1669.
SESAME Project, "Site EffectS assessment using AMbient Excitations", 2001-2004, http://sesame-
fp5.obs.ujf-grenoble.fr.
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