Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/3020
DC Field | Value | Language |
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dc.contributor.authorall | Vassallo, M.; Dipartimento di Scienze Fisiche, Università di Napoli Federico II (RISSC-Lab), Italy | en |
dc.contributor.authorall | Zollo, Z.; Dipartimento di Scienze Fisiche, Università di Napoli Federico II (RISSC-Lab), Italy | en |
dc.date.accessioned | 2007-12-07T10:35:05Z | en |
dc.date.available | 2007-12-07T10:35:05Z | en |
dc.date.issued | 2007 | en |
dc.identifier.uri | http://hdl.handle.net/2122/3020 | en |
dc.description.abstract | We propose a two-dimensional, non-linear method for the inversion of reflected/converted traveltimes and waveform semblance designed to obtain the location and morphology of seismic reflectors in a lateral heterogeneous medium and in any source-to-receiver acquisition lay-out. This method uses a scheme of non-linear optimisation for the determination of the interface parameters where the calculation of the traveltimes is carried out using a finite- difference solver of the Eikonal equation, assuming an a priori known back- ground velocity model. For the search of the optimal interface model, we have used a multiscale approach and the Genetic Algorithm global optimization technique. During the initial stages of inversion, we used the arrival times of the reflection phase to retrieve the interface model that is defined by a small num- ber of parameters. In the successive steps, the inversion is based on the opti- mization of the semblance value determined along the calculated traveltime curves. Errors in the final model parameters and the criteria for the choice of the bestfit model are also estimated from the shape of the semblance function in the model parameter space. The method is tested and validated on a synthe- tic dataset that simulates the acquisition of reflection data in a complex volca- nic structure. | en |
dc.description.sponsorship | I.N.G.V. | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | INGV- DPC/V4 PROJECT V4 | en |
dc.subject | method and applications to synthetic data | en |
dc.title | Depth and morphology of reflectors from the 2-D non-linear inversion of arrival-time and waveform semblance data: method and applications to synthetic data | en |
dc.type | report | en |
dc.description.status | Published | en |
dc.type.QualityControl | Unreferred | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring | en |
dc.relation.references | Depth and morphology of reflectors from the 2-D non-linear inversion of arrival-time and… References [1] H Akaike. A new look at the statistical model identification. IEEE Trans. Autom.Control,6:716723, 1974. [2] C. Bunks, F. M. Salick, S. Zaleski, and G. Chavent. Multiscale seismic waveform inver-sion. Geophysics, 60:1457-1473, 1995.[3] G. Festa and S. Nielsen. PML absorbing boundaries. Bull.Seism.Soc.Am., 93(2):891-903, 2003. [4] D. Goldberg. Genetic Algorithms in Search, Optimisation and Machine Learning.Addison-Wesley Professional, 1989.[5] J. Holland. Adaptation in natural and artificial systems. The University of MichiganPress, 1975. [6] C. M. Hurvich and C. Tsai. Regression and Time Series Model Selection in SmallSamples. Biometrika, 76:297-307, 1989.[7] L. Improta, A. Zollo, A. Herrero, R. Frattini, J. Virieux, and P. Dell’Aversana. Seismicimaging of complex structures by non linear traveltime inversion of dense wide-angledata: application to a thrust belt. Geophys. J. Int., 151(1):264-278, 2002.[8] S. Judenherc and A. Zollo. The Bay of Naples (Southern Italy): constraints on the vol-canic structures inferred from a dense seismic survey. J. Geophys. Res., 109:doi:10.1029/2004GL019432, 2004.[9] T. Krey. Seismic stripping helps unravel deep reflections. Geophysics, 43(5):899-911,1978. [10] N. S. Neidell and M. T. Taner. Semblance and other coherency measures for multi-cannel data. Geophysics, 36(3):482-497, 1971.[11] P. Podvin and I. Lecomte. Finite difference computation of traveltimes in very con-trasted velocity models: a massively parallel approach and its associated tools. Geophys.J. I., 105:271-284, 1991. [12] S. K. Pullammanappallil and J. N. Louie. Inversion of seismic reflection traveltimesusing a non linear optimization scheme. Geophysics, 58(11):1607-1620, 1993.[13] D. Whitley. A Genetic Algorithm Tutorial. Samizdat Press (http://samizdat.mines.edu/ga tutorial), 1994.[14] O. Yilmaz and R. Chambers. Migration velocity analysis by wave-field extrapolation.Geophysics, 49(10):1664-1974, 1984.[15] A. Zollo, S. Judenherc, E. Auger, J. Virieux, R. Capuano, C. Chiarabba, R. De Franco,J. Makris, A. Michelini, and Musacchio G. Evidence for the buried rim of Campi Flegreicaldera from 3-d active seismic imaging. Geophys. Res. Lett., 30(19):doi:10.1029/2003GL018173, 2003. | en |
dc.description.obiettivoSpecifico | 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive | en |
dc.description.fulltext | open | en |
dc.contributor.author | Vassallo, M. | en |
dc.contributor.author | Zollo, Z. | en |
dc.contributor.department | Dipartimento di Scienze Fisiche, Università di Napoli Federico II (RISSC-Lab), Italy | en |
dc.contributor.department | Dipartimento di Scienze Fisiche, Università di Napoli Federico II (RISSC-Lab), Italy | en |
item.openairetype | report | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_93fc | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Dipartimento di Scienze Fisiche, Università di Napoli Federico II (RISSC-Lab), Italy | - |
crisitem.author.orcid | 0000-0001-8552-6965 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
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