Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5380
DC Field | Value | Language |
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dc.contributor.authorall | Bindi, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia | en |
dc.contributor.authorall | Marzorati, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia | en |
dc.contributor.authorall | Parolai, S.; GFZ-Potsdam | en |
dc.contributor.authorall | Strollo, A.; GFZ-Potsdam | en |
dc.contributor.authorall | Jäckel, K.-H.; GFZ-Potsdam | en |
dc.date.accessioned | 2009-12-23T15:07:51Z | en |
dc.date.available | 2009-12-23T15:07:51Z | en |
dc.date.issued | 2009-01-01 | en |
dc.identifier.uri | http://hdl.handle.net/2122/5380 | en |
dc.description.abstract | In this work, we analyse continuous measurements of microseisms to assess the reliability of the fundamental resonance frequency estimated by means of the horizontal-to-vertical (H/V) spectral ratio within the 0.1–1 Hz frequency range, using short-period sensors (natural period of 1 s). We apply the H/V technique to recordings of stations installed in two alluvial basins with different sedimentary cover thicknesses—the Lower Rhine Embayment (Germany) and the Gubbio Plain (Central Italy). The spectral ratios are estimated over the time–frequency domain, and we discuss the reliability of the results considering both the variability of the microseism activity and the amplitude of the instrumental noise. We show that microseisms measured by short period sensors allow the retrieval of fundamental resonance frequencies greater than about 0.1–0.2 Hz, with this lower frequency bound depending on the relative amplitude of themicroseism signal and the self-noise of the instruments. In particular,we show an examplewhere the considered short-period sensor is connected to instruments characterized by an instrumental noise level which allows detecting only fundamental frequencies greater than about 0.4 Hz. Since the frequency at which the peak of the H/V spectral ratio is biased depends upon the seismic signal-to-instrument noise ratio, the power spectral amplitude of instrumental self-noise should be always considered when interpreting the frequency of the peak as the fundamental resonance frequency of the investigated site. | en |
dc.language.iso | English | en |
dc.publisher.name | Wiley-Blackwell | en |
dc.relation.ispartof | Geophysical Journal International | en |
dc.relation.ispartofseries | /176 (2009) | en |
dc.subject | site effects | en |
dc.subject | fourier analysis | en |
dc.title | Empirical H/V spectral ratios estimated in two deep sedimentary basins using microseisms recorded by short-period seismometers | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 175-184 | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution | en |
dc.identifier.doi | 10.1111/j.1365-246X.2008.03958.x | en |
dc.relation.references | Bromirski, P. D., Duennebier, F. K. & Stephen, R. A. 2005. Mid-ocean microseisms, Geochem. Geophys. Geosyst., 6, Q04009, doi:10.1029/2004GC000768. Cooley, J.W. & Tukey, J.W. 1965. An algorithm for machine calculation of complex Fourier series, Math. Comput., 19, 297–301. Delgado, J., Lopez Casado, C., Giner, J., Estevez, A., Cuenca, A. &Molina, S. 2000. Microtremors as a geophysical exploration tool: applications and limitations, Pure appl. Geophys., 157, 1445–1462. Essen, H.-H., Kr¨uger, F.,Dahm, T.&Grevemeyer, I. 2003. On the generation of secondary microseisms observed in northern and central Europe, J. geophys. Res., 108(B10), 2506, doi:10.1029/2002JB002338. F¨ah, D., Kind, F. & Giardini, D. 2003. Inversion of local S-wave velocity structures from average H/V ratios, and their use for the estimation of site-effects, J. Seism., 7, 449–467. Friedrich, A., Kr¨uger, F. & Klinge, K. 1998. Ocean generated microseismic noise located with the Gr¨afenberg array, J. Seism., 2, 47–64. Ibs-von Seht, M. & Wohlenberg, J. 1999. Microtremor measurements used to map thickness of soft sediments, Bull. seism. Soc. Am., 89, 250–259. Longuet-Higgins, M. S. 1950. A theory of the origin of microseisms, Phil. Trans. R. Soc. Lond., A, 243, 2–36. McNamara, D. E. & Buland, R. P. 2004. Ambient noise levels in the continental United States, Bull. seism. Soc. Am., 94(4), 1517–1527. Marzorati, S. & Bindi, D. 2006. Ambient noise levels in north central Italy, Geochem. Geophys. Geosyst., 7, Q09010, doi:10.1029/2006GC001256. Nakamura, Y. 1989. A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface, Q. Rep. Rail. Tech. Res. Inst. Tokyo, 30, 25–33. Parolai, S., Bormann, P. & Milkereit, C. 2001. Assessment of the natural frequency of the sedimentary cover in the Cologne area (Germany) using noise measurements, J. Earthq. Eng., 5(4), 541–564. Parolai, S., Bormann, P. & Milkereit, C. 2002. New relationships between Vs, thickness of the sediments and resonance frequency calculated by means of H/V ratio of seismic noise for the Cologne area (Germany), Bull. seism. Soc. Am., 92(6), 2521– 2527. Parolai, S., Richwalski, S.M., Milkereit, C.&Bormann, P. 2004. Assessment of the stability of H/V spectral ratios and comparison with earthquake data in the Cologne area (Germany), Tectonophysics, 390, 57–73. Parolai, S., Picozzi, M., Richwalski, S.M. & Milkereit, C. 2005. Joint inversion of phase velocity dispersion and H/V ratio curves from seismic noise recordings using a genetic algorithm, considering higher modes, Geoph. Res. Lett., 32, doi:10.1029/2004GL021115. Picozzi, M., Parolai, S. & Richwalski, S. M. 2005. Joint inversion of H/V ratios and dispersion curves from seismic noise: estimatine the S-wave velocity of bedrock, Geoph. Res. Lett., 32, doi:10.1029/2005GL022878. Project DPC-INGV S3. 2007. Shaking scenarios including site effects, Deliverables D22-D23,Task 6: Gubbio test site, available at http://esse3.mi.ingv.it. Scherbaum, F., Hinzen, K.G. & Ohrnberger, M. 2003. Determination of shallow shear wave velocity profiles in Cologne, Germany area using ambient vibrations, Geophys. J. Int., 152, 597–612. Stephen, R.A., Spiess, F.N., Collins, J.A., Hildebrand, J. A., Orcutt, J.A., Peal, K.R., Vernon, F.L. & Wooding, F. B. 2003. Ocean Seismic Network Pilot Experiment, Geochem. Geophys. Geosyst., 4(10), 1092, doi:10.1029/2002GC000485. Strollo A, Parolai, S., J¨akel, K.H., Marzorati, S. & Bindi, D. 2008. Suitability of short-period sensors for retrieving reliable H/V peaks for frequencies less than 1 Hz, Bull. seism. Soc. Am., 98, 671–681, doi:10.1785/0120070055. Webb, S.C. 1998. Broadband seismology and noise under the ocean, Rev. Geophys., 36, 105–142. | en |
dc.description.obiettivoSpecifico | 4.1. Metodologie sismologiche per l'ingegneria sismica | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Bindi, D. | en |
dc.contributor.author | Marzorati, S. | en |
dc.contributor.author | Parolai, S. | en |
dc.contributor.author | Strollo, A. | en |
dc.contributor.author | Jäckel, K.-H. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia | en |
dc.contributor.department | GFZ-Potsdam | en |
dc.contributor.department | GFZ-Potsdam | en |
dc.contributor.department | GFZ-Potsdam | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.dept | OGS - Istituto Nazionale di Oceanografia e di Geofisica Sperimentale | - |
crisitem.author.dept | GIPP Geophysical Instrumental Pool Potsdam, Potsdam, Germany | - |
crisitem.author.orcid | 0000-0002-8619-2220 | - |
crisitem.author.orcid | 0000-0002-5803-4882 | - |
crisitem.author.orcid | 0000-0002-9084-7488 | - |
crisitem.author.orcid | 0000-0001-9602-6077 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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GJI-08-0214-R1.pdf | article with embedded figures | 930.08 kB | Adobe PDF | View/Open |
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