Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2948
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dc.contributor.authorallGuillier, B.; LGIT-IRD, Observatoire de Grenoble, BP 53-38041, Grenoble Cedex, Franceen
dc.contributor.authorallAtakan, K.; UiB, Bergen, Norwayen
dc.contributor.authorallChatelain, J.-L.; LGIT-IRD, Observatoire de Grenoble, BP 53-38041, Grenoble Cedex, Franceen
dc.contributor.authorallHavskov, J.; UiB, Bergen, Norwayen
dc.contributor.authorallOhrnberger, M.; IGUP, Potsdam, Germanyen
dc.contributor.authorallCara, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallDuval, A.-M.; CETE, Nice, Franceen
dc.contributor.authorallZacharopoulos, S.; ITSAK, Thessaloniki, Greeceen
dc.contributor.authorallTeves-Costa, P.; ICTE-UL, Lisbon, Portugalen
dc.date.accessioned2007-12-04T14:20:50Zen
dc.date.available2007-12-04T14:20:50Zen
dc.date.issued2008en
dc.identifier.urihttp://hdl.handle.net/2122/2948en
dc.description.abstractFor an optimal analysis of the H/V curve, it appears necessary to check the instrument signal to noise ratio in the studied frequency band, to ensure that the signal from the ground noise is well above the internal noise. We assess the reliability and accuracy of various digitizers, sensors and/or digitizer-sensor couples. Although this study is of general interest for any kind of seismological study, we emphasize the influence of equipment on H/V analysis results. To display the impact of the instrumental part on the H/V behavior, some series of tests have been carried out following a step-by-step procedure: first, the digitizers have been tested in the lab (sensitivity, internal noise...), then the three components sensors, still in the lab, and finally the usual user digitizers-sensors couple in lab and outdoors. In general, the digitizer characteristics, verified during this test, correspond well to the manufacturer specifications, however, depending on the digitizer, the quality of the digitized waveform can be very good to very poor, with variation from a channel to another channel (gain, time difference etc.). It appears very clearly that digitizers need a warming up time before the recording to avoid problems in the low-frequency range. Regarding the sensors, we recommend strongly to avoid the use of “classical” accelerometers (i.e., usual force balance technology). The majority of tested seismometers (broadband and short period, even 4.5 Hz) can be used without problems from 0.4 to 25 Hz. In all cases, the instrumentation should be checked first to verify that it works well for the defined study aim, but also to define its limit of use (frequency, sensitivity...).en
dc.language.isoEnglishen
dc.publisher.nameSpringer Netherlandsen
dc.relation.ispartofBulletin of Earthquake Engineeringen
dc.relation.ispartofseries1/6 (2008)en
dc.subjectH/V techniqueen
dc.subjectInstrumentationen
dc.subjectMicrotremorsen
dc.subjectSite effectsen
dc.titleInfluence of instruments on the H/V spectral ratios of ambient vibrationsen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber3-31en
dc.identifier.URLhttp://www.springerlink.com/content/l077752450215r62/fulltext.pdfen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneousen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniquesen
dc.identifier.doi10.1007/s10518-007-9039-0en
dc.relation.referencesBard P-Y (2002) Extracting information from ambient seismic noise: The SESAME project (Site EffectS assessment using AMbient Excitations). European Project No. EVG1-CT-2000–00026 SESAME, 2002, http://sesame-fp5.obs.ujf-grenoble.fr Review meeting, Brussels, Belgium Bard P-Y, the SESAME participants (2003) The EU SESAME project: presentation, latest results and perspectives. Workshop on Effects of Surface Geology on Seismic Motion, IUGG/IASPEI 2003, July 11 2003, Sapporo, Japan Bard P-Y, SESAME participants (2004) The SESAME project: an overview and main results. Proceedings of the 13th World Conference in Earthquake Engineering, Vancouver, August 2004, Paper no 2207 Chatelain J-L, Guillier B, Duval A-M, Atakan K, Bard P-Y, the WP02 SESAME team (2005) Evaluation of the influence of experimental conditions on H/V results from ambient noise recordings, this volume Goula X, Susagna T, Figueras S, Farres P, Cid X, Alfaro A, Barchiesi A (1997) Analysis of Site Effect in the City of Barcelona (Spain), XIX General Assembly of the IASPEI, Thessaloniki, Abstract Book, p 324 Guéguen Ph, Chatelain J-L, Guillier B and Yepes H (2000). An indication of the topmost layer response in Quito (Ecuador) using noise H/V spectral ratio. Soil Dyn Earth Eng 19: 127–133 CrossRef Guillier B, Chatelain J-L and Bard P-Y (2001). Bibliothèque de programme pour le calcul et la représentation graphique de H/V. Documentation interne, LGIT, Grenoble, France Guillier B, Atakan K, Duval A-M, Ohrnberger M, Azzara R, Cara F, Havskov J, Alguacil G, Teves-Costa P, Theodulidis N, the SESAME Project WP02-Team (2002a) Influence of instrumentation on H/V spectra of ambient noise. EGS, 22–26 April 2002, Nice, France Guillier B, Atakan K, Duval A-M, Ohrnberger M, Azzara R, Cara F, Havskov J, Alguacil G, Teves-Costa P, Theodulidis N, the SESAME Project WP02-Team (2002b) Influence of instrumentation on H/V spectra of ambient noise. European Seismological Commission, September 2002, Genova, Italy Guillier B, Chatelain J-L, Hellel M, Machane D, Mezouer N, Ben Salem R, Oubaiche EH (2005) Smooth bumps in H/V curves over a broad area from single-station ambient noise recordings are meaningful and reveal the importance of Q in array processing: The Boumerdes (Algeria) case. Geophys Res Lett, 32:(24)L24306, doi: 10.1029/2005GL023726 Havskov J and Ottemöller L (2000). SEISAN The earthquake analysis software for Windows, Solaris and Linux (Ver. 7.1). Institute of Solid Earth Physics, University of Bergen, Norway, 228 IAGA workshop on Geomagnetic Observatory Instruments (XIth), Data Acquisition and Processing, November 9–17 2004, Kakioka Magnetic Observatory, Japan, 2004. http://www.kakioka2004ws.org/ Koller MG, Chatelain J-L, Guillier B, Duval AM, Atakan K, Lacave C, Bard P-Y, the SESAME participants (2004) Practical user guideline and software for the implementation of the H/V ratio technique on ambient vibrations: measuring conditions, processing method and results interpretation. 13th World Conference on Earthquake Engineering Vancouver, BC, Canada August 1–6, 2004 Paper No. 3132 Konno K and Ohmachi T (1998). Ground-motion characteristics estimated from spectral ratio between horizontal and vertical components of microtremor. Bull Seismological Soc Am 88(1): 228–241 Lachet C, Bard P-Y (1995) Theoretical investigation on the Nakamura’s technique. 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dc.description.obiettivoSpecifico4.1. Metodologie sismologiche per l'ingegneria sismicaen
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorGuillier, B.en
dc.contributor.authorAtakan, K.en
dc.contributor.authorChatelain, J.-L.en
dc.contributor.authorHavskov, J.en
dc.contributor.authorOhrnberger, M.en
dc.contributor.authorCara, F.en
dc.contributor.authorDuval, A.-M.en
dc.contributor.authorZacharopoulos, S.en
dc.contributor.authorTeves-Costa, P.en
dc.contributor.departmentLGIT-IRD, Observatoire de Grenoble, BP 53-38041, Grenoble Cedex, Franceen
dc.contributor.departmentUiB, Bergen, Norwayen
dc.contributor.departmentLGIT-IRD, Observatoire de Grenoble, BP 53-38041, Grenoble Cedex, Franceen
dc.contributor.departmentUiB, Bergen, Norwayen
dc.contributor.departmentIGUP, Potsdam, Germanyen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentCETE, Nice, Franceen
dc.contributor.departmentITSAK, Thessaloniki, Greeceen
dc.contributor.departmentICTE-UL, Lisbon, Portugalen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptLGIT, Grenoble, France-
crisitem.author.deptUniversity of Bergen, Norway-
crisitem.author.deptLGIT, Grenoble, France-
crisitem.author.deptUniversity of Bergen, Norway-
crisitem.author.deptIGUP, Potsam, Germany-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptCETE, Nice, France-
crisitem.author.deptITSAK, Thessaloniki, Greece-
crisitem.author.deptICTE-UL, Lisbon, Portugal-
crisitem.author.orcid0000-0002-1702-563X-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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