Stéphane Operto – Senior research scientist

Stéphane Operto
Senior research scientist - CNRS
Geoazur
CNRS - UNSA - IRD - OCA
250, rue Albert Einstein
Sophia-Antipolis,
Valbonne, FRANCE 06560
H +33 6 32 32 08 36
T +33 4 83 61 87 52
u +33 4 83 61 85 01
B [email protected]
Scientific interests
Geophysics: Seismic modeling, inverse problem theory, seismic imaging by least-squares
migration and full waveform inversion, seismic data processing, processing and inversion
of land and ocean bottom seismic data
Education & carreer
2014 - Senior research scientist CNRS
present
Dec 2006 "Habilitation à diriger les recherches"
2001 - 2014 Research scientist (rank 1) CNRS, Geoazur Institute
1998 - 2001 Research scientist (rank 2) CNRS, Geoazur Institute
1991–1995 Ph.D. Marine Geophysics, Structure and origine of the submarine Kerguelen plateau
(austral Indian ocean): geodynamical implications. Modeling of marine wide-angle
seismic data,University Paris 6
1990–1991 M. Sc. Géodynamique des marges océaniques et des chaines de montagne, University
of Nice
1986–1989 Engineering degree, Ecole Nationale Supérieure des Arts et Métiers (ENSAM), Aix-enProvence, Paris
Professional experience
1998–Present CNRS research scientist, Geoazur Institute, Sophia-Antipolis, FRANCE
1996–1997 Post-doctoral fellow, Institute for Geophysics, Ecole des Mines de Paris, Fontainebleau
1995–1996 Post-doctoral fellow, Institute for Geophysics, University of Texas, Austin
Honors & Awards
2014 Honorable mention in the category of Best paper in Geophysics for "Computationallyefficient three-dimensional acoustic finite-difference frequency-domain seismic modeling
in vertical transversely isotropic media with sparse direct solver" by S. Operto et al.
2011 Geophysics bright spots for "Joint ray+Born least-squares migration and simulated
annealing optimization for target-oriented quantitative seismic imaging", (co-authored
with A. Ribodetti, W. Agudelo, J. Y. Collot and J. Virieux)
2009, 2012 Outstanding reviewer Geophysical Journal International
2009 Geophysics bright spots for "Seismic imaging of complex onshore structures by twodimensional elastic frequency-domain full waveform inversion", (co-authored with R.
Brossier and J. Virieux)
2008 Best paper in Geophysics for "Velocity model-building by 3D frequency-domain fullwaveform inversion of wide-aperture seismic data", (co-authored with Hafedh Ben
Hadj Ali and Jean Virieux)
2006 Top 30 presentation at SEG Annual Meeting for "3D frequency-domain finite-difference
modeling of acoustic wave propagation using a massively parallel direct solver: a
feasibility stydy" (co-authored with J. Virieux, P. Amestoy, J. -Y. L’Excellent) and "2D
fine-scale velocity model of the subduction channel in Gulf of Guayaquil by integrated
PSDM and simulated annealing optimization" (co-authored with A. Ribodetti, W.
Agudelo, J. -Y. Collot)
2005 Louis Cagniard Award, EAGE, Best poster presentation Annual Meeting, Madrid 1995
(co-authored with J. Virieux and J. -X. Dessa).
1995 AGU Highlights for "Multiscale seismic imaging of the eastern Nankai trough by full
waveform inversion (co-authored with J. X. Dessa, S. Kodaira, A. Nakanishi, G. Pascal,
J. Virieux and Y. Kaneda).
Post-doctoral fellows & Students advised
Ph.D.
2002 Bernhard Hustedt (Main supervisor: J. Virieux), Ph. D., Propagation des ondes:
approches espace et ondelettes, University of Nice
2003 Céline Ravaut (supervisor: S. Operto), Ph. D., Tomographie sismique haute résolution
de la croute terrestre: inversion combinée des temps de trajet et des formes d’ondes de
données de sismique réfraction - réflexion grand-angle multitrace, University Paris 6
2009 Romain Brossier (co-supervisors: S. Operto & J. Virieux), Ph. D., Imagerie sismique
à deux dimensions des milieux visco-élastiques par inversion des formes d’ondes :
développements méthodologiques et applications, University of Nice
2009 Hafedh Ben Hadj Ali (co-supervisors: S. Operto & J. Virieux), Ph. D., Three
dimensional visco-acoustic frequency-domain full waveform inversion, University of
Nice
2011 Vincent Etienne (co-supervisors: S. Operto & J. Virieux), Ph. D., Modélisation des
ondes sismiques dans des milieux élastiques 3D : application à l’inversion des formes
d?onde., University of Nice
2012 Vincent Prieux (co-supervisors: S. Operto & J. Virieux), Ph. D., Imagerie du champ
pétrolier de Valhall par inversion des formes d’onde élastique, University of Nice
2012 Guanghui Hu (co-supervisors: S. Operto & J. Virieux), Ph. D., Imagerie 3D du champ
pétrolier de Valhall par inversion des formes d’onde 3D, University of Grenoble
2012 Yaser Gholami (co-supervisors: S. Operto & A. Ribodetti), Ph. D., Imagerie des
milieux anisotropes par inversion de formes d’onde, University of Nice
2012 Damien Pageot (co-supervisors: S. Operto & M. Vallée), Ph. D., Imagerie lithosphérique à partir de données télésismiques par inversion des formes d’onde, University
of Nice
Defended 18 Clara Castellanos (supervisor: S. Gaffet & S. Operto), Ph. D., Méthodes de régulariApril 2014 sation et encodage de sources en inversion des formes d’ondes, University of Nice
scheduled Stephen Beller (supervisors: S. Operto, V. Monteiller, G. Nolet), Ph. D., Lithospheric
end of 2016 imaging from teleseismic data by full waveform inversion, University of Nice
scheduled Wei Zhou (supervisors: R. Brossier, S. Operto, J. Virieux), Ph. D., Velocity model
end of 2016 building from seismic reflection data by full waveform inversion, Université Joseph
Fourier
Post-doctoral fellows
2001-2003
2005-2006
2005-2008
2010-2012
Jean-Xavier Dessa, post-doctoral fellow
Matthieu Delost, post-doctoral fellow
Florent Sourbier, research enginneer in computational geosciences
Vincent Etienne, research enginneer in computational geosciences
Master degrees
2009 Amedi Blessing (M1, MathMods, ERASMUS Mundus)
2009 Jade Rachel Garcia (M1, MathMods, ERASMUS Mundus)
2008 Vincent Prieux (M2P, Géosciences, Exploration et Risques, Grenoble University)
Research funding and project management
2006 – 2011 co-PI (with J. Virieux) of the petroleum SEISCOPE consortium
(http://seiscope.oca.eu) funded by BP, CGGVeritas, ENI, ExxonMobil, PETROBRAS,
SaudiAramco, Shell, Statoil, Total (industry funding)
2005 – 2009
2005-2006
2002-2005
2002
1998
PI of the SEISCOPE ANR project (Academic funding), 450Keuros
DYETI, seismic tomography of the crust from wide-angle seismic data
ATIP "jeunes chercheurs"
OCEANS, processing of OBS data from the SFJ-OBS experiment.
ACI "Jeunes chercheurs"
Invited seminars
31 mars 2015 SEG FWI Workshop: filling the gaps, Abu Dhabi, Keynote speaker, Efficient 3D
frequency-domain FWI of OBC data with sparse direct solver: a real data case study
from the North Sea
22 mars 2015 Workshop Multi-scale waveform modeling & Inversion, KAUST UNiversity, Efficient
3D frequency-domain FWI of OBC data with sparse direct solver: a real data case
study from the North Sea
7 février 2014 Seismic imaging of the Earth interior by Full Waveform Inversion (FWI): from theory
to practice. S. Operto, Séminaire MAD (Mathématiques pour l’analyse de données),
Observatoire de la Côte d’Azur.
September Multiparameter full waveform inversion of multicomponent data: what have we learnt
2013 from the Valhall case study, R. Brossier, C. Castellanos, Y. Gholami, L. Métivier, S.
Operto∗ V. Prieux, A. Ribodetti and J. Virieux, Workshop of the Society of Exploration
Geophysics, W11 Advances in model building, imaging and FWI
August 2013, Multiparameter full waveform inversion with multicomponent data: some insights
keynote from the Valhall case study, S. Operto∗ , R. Brossier, C. Castellanos, Y. Gholami, L.
speaker Métivier, V. Prieux, A. Ribodetti and J. Virieux, 13th International Congress of the
Brazilian Geophysical Society, Rio de Janeiro
Teaching experience
2006 Summer school on global-offset seismic imaging - Lectures on finitedifference frequency-domain seismic modeling and full waveform inversion
(http://seiscope.oca.eu/spip.php?rubrique20)
2012 Training course on seismic modeling and full waveform inversion (30 hours) - PETROBRAS, Rio de Janeiro, Brazil
Editorial service
2013–present Asssociate Editor at Geophysics
2009 Guest Associate Editor at Geophysics for the special issue on "New advances on seismic
imaging and inversion"
Reviewer Geophysics, Geophysical Prospecting, Geophysical Journal International, Journal of
Geophysical Research, Computer & Geosciences, Geophysical Reseach Letters
Graduate commitees
2009
2009
2009
2010
2010
2010
2010
2011
2014
2015
2016
(examiner) R. E. Plessix, HDR., University of Grenoble
(reviewer) R. Madec, Ph. D., University of Pau
(reviewer) L. Métivier, Ph. D., University Paris 13
(examiner) F. Bretaudeau, Ph. D., University of Nantes
(examiner) H. Chauris, HDR., University of Paris 6 - Mines ParisTech
(guest) A. Rhomdane, Ph. D., University of Paris 6
(examiner) E. Maufroy, University of Nice
(external reviewer) L. Guasch, Imperial College, London
(reviewer) D. Borisov, University of Paris 6 - IPGP
(examiner) F. Wang, Mines ParisTech
(external reviewer) G. Huot, University of Paris 6 - IPGP
Workshop
2008 Workshop of the annual EAGE meeting, Roma - Full waveform inversion - current
status and perspectives (with Wim Mulder and René-Edouard Plessix)
Professional membership
EAGE, SEG.
Software & Algorithm development: wave modeling, seismic data
processing, seismic imaging
Time-space and time-wavelet finite-difference time-domain algorithms.
Finite-difference frequency-domain algorithms.
Least-squares ray+Born migration algorithms.
Full waveform inversion codes.
Basic seismic data processing: filtering, deconvolution, spectral analysis.
Field experience (marine seismic cruises)
2002 MEDISIS cruise - Multichannel seismic (MCS) reflection experiment, Nil delta and
Mediterannean ridge. Chief scientist: J. Mascle
2000 SISTEUR cruise - MCS and OBS refraction surveys, offshore Equador - Colombia
subduction margins. Co-chief scientists: J.Y. Collot and Ph. Charvis
1999 GEOLIG2D cruse - OBS seismic refraction survey, offshore Ligurian basin. Chief
scientist: S. Operto
1995 TAICRUST experiment. MCS and OBS seismic surveys, offshore Taiwan. Co-chief
scientists: Yosio Nakamura et T-K Wang
1995 TICOSECT experiment (UTIG-GEOMAR). OBS survey offshore Costa Rica. Chief
scientist : Kirk McIntosh
1993 REUSIS cruise - MCS and OBS surveys, offshore Reunion island. Co-chiefs scisntists:
Philippe Charvis and Béatrice de Voogdt
1991 MD/66 KeOBS experiment. OBS survey over submarine Kerguelen plateau. Chief
scientist: Philippe Charvis
Scientific production
62 peer-reviewed articles.
6 book chapters.
86 conference proceedings.
h index: 25 (Isi Web of knowledge); 35 (Google scholar).
Publications
[1] P. Amestoy, R. Brossier, A. Buttari, J.-Y. L’Excellent, T. Mary, L. Métivier, A. Miniussi,
and S. Operto. Fast 3d frequency-domain full waveform inversion with a parallel Block
Low-Rank multifrontal direct solver: application to OBC data from the North Sea.
Geophysics, in-press, 2016.
[2] S. Operto, A. Miniussi, R. Brossier, L. Combe, L. Métivier, V. Monteiller, A. Ribodetti,
and J. Virieux. Efficient 3-D frequency-domain mono-parameter full-waveform inversion
of ocean-bottom cable data: application to Valhall in the visco-acoustic vertical
transverse isotropic approximation. Geophysical Journal International, 202(2):1362–
1391, 2015.
[3] W. Zhou, R. Brossier, S. Operto, and J. Virieux. Full waveform inversion of diving &
reflected waves for velocity model building with impedance inversion based on scale
separation. Geophysical Journal International, 202(3):1535–1554, 2015.
[4] C. Castellanos, L. Métivier, S. Operto, R. Brossier, and J. Virieux. Fast full waveform inversion with source encoding and and second-order optimization methods.
Geophysical Journal International, 200:718–742, 2015.
[5] L. Métivier, R. Brossier, S. Labbé, S. Operto, and J. Virieux. A robust absorbing layer
for anisotropic seismic wave modeling. Journal of Computational Physics, 279:218–240,
2014.
[6] S. Operto, R. Brossier, L. Combe, L. Métivier, A. Ribodetti, and J. Virieux.
Computationally-efficient visco-acoustic finite-difference frequency-domain seismic
modeling in vertical transversely isotropic media with sparse direct solvers. Geophysics, 79(5):T257–T275, 2014.
[7] E. Mauffroy, S. Gaffet, S. Operto, Y. Guglielmi, and D. Boyer. Travel time inversion
from ground level to gallery: protocol for the characterization of P-wave signature in
a fractured-porous Urgonian platform at hectometric scale. Near surface geophysics,
12:697–708, 2014.
[8] R. Brossier, S. Operto, and J. Virieux. Velocity-model building from seismic reflection
data by full waveform inversion. Geophysical Prospecting, Accepted for publication,
2013.
[9] L. Métivier, F. Bretaudeau, R. Brossier, S. Operto, and J. Virieux. Full waveform inversion using the truncated newton method: quantitative imaging of complex subsurface
structures. Geophysical Prospecting, 62(6):1353 – 1375, 2013.
[10] S. Operto, R. Brossier, Y. Gholami, L. Métivier, V. Prieux, A. Ribodetti, and J. Virieux.
Multi-parameter full waveform inversion with multi-component data: from theory to
practice. The Leading Edge, September, Full Waveform Inversion special issue:1040 –
1054, 2013.
[11] V. Prieux, R. Brossier, S. Operto, and J. Virieux. Multiparameter full waveform
inversion of multicomponent OBC data from valhall. Part 2: imaging compressional
and shear-wave velocities. Geophysical Journal International, 194(3):1665 – 1681,
2013.
[12] V. Prieux, R. Brossier, S. Operto, and J. Virieux. Multiparameter full waveform
inversion of multicomponent OBC data from valhall. Part 1: imaging compressional
wavespeed, density and attenuation. Geophysical Journal International, 194(3):1640–
1664, 2013.
[13] L. Métivier, R. Brossier, J. Virieux, and S. Operto. Full waveform inversion and
the truncated Newton method. SIAM Journal on Scientific Computing, 35(2):B401 –
B437, 2013.
[14] D. Pageot, S. Operto, M. Vallée, R. Brossier, and J. Virieux. A parametric analysis
of two-dimensional elastic full waveform inversion of teleseismic data for lithospheric
imaging. Geophysical Journal International, 193:1479–1505, 2013.
[15] Y. Gholami, R. Brossier, S. Operto, V. Prieux, A. Ribodetti, and Jean Virieux. Which
parametrization for acoustic VTI full waveform inversion? - Part 2: application to
Valhall. Geophysics, 78(2):R107–R124, 2013.
[16] Y. Gholami, R. Brossier, S. Operto, A. Ribodetti, and Jean Virieux.
Which
parametrization for acoustic VTI full waveform inversion? - Part 1: sensitivity
and trade-off analysis. Geophysics, 78(2):R81–R105, 2013.
[17] V. Prieux, G. Lambaré, S. Operto, and Jean Virieux. Building starting model for
full waveform inversion from wide-aperture data by stereotomography. Geophysical
Prospecting, 61(Issue supplement: 60 year anniversary issue):109–137, 2012.
[18] V. Prieux, R. Brossier, Y. Gholami, S. Operto, J. Virieux, O.I. Barkved, and J.H.
Kommedal. On the footprint of anisotropy on isotropic full waveform inversion: the
Valhall case study. Geophysical Journal International, 187:1495–1515, 2011.
[19] A. Ribodetti, S. Operto, W. Agudelo, J.-Y. Collot, and J. Virieux. Joint ray+born
least-squares migration and simulated annealing optimization for high-resolution targetoriented quantitative seismic imaging. Geophysics, 76(2):R23, 2011.
[20] A. Romdhane, G. Grandjean, R. Brossier, F. Réjiba, S. Operto, and J. Virieux. Shallow
structures characterization by 2D elastic waveform inversion. Geophysics, 76(3):R81,
2011.
[21] M. Malinowski, S. Operto, and A. Ribodetti. High-resolution seismic attenuation
imaging from wide-aperture onshore data by visco-acoustic frequency-domain full
waveform inversion. Geophysical Journal International, 186(3):1179–1204, 2011.
[22] F. Sourbier, A. Haiddar, L. Giraud, H. Ben-Hadj-Ali, S. Operto, and J. Virieux.
Three-dimensional parallel frequency-domain visco-acoustic wave modelling based on
a hybrid direct/iterative solver. Geophysical Prospecting, 59(5):834–856, 2011.
[23] H. Ben Hadj Ali, S. Operto, and J. Virieux. An efficient frequency-domain full waveform
inversion method using simultaneous encoded sources. Geophysics, 76(4):R109, 2011.
[24] Romain Brossier, Stéphane Operto, and Jean Virieux. Which data residual norm for
robust elastic frequency-domain full waveform inversion? Geophysics, 75(3):R37–R46,
2010.
[25] J. Virieux and S. Operto. An overview of full waveform inversion in exploration
geophysics. Geophysics, 74(6):WCC1–WCC26, 2009.
[26] J. Virieux, S. Operto, H. Ben Hadj Ali, R. Brossier, V. Etienne, F. Sourbier, L. Giraud,
and A. Haidar. Seismic wave modeling for seismic imaging. The Leading Edge,
28(5):538–544, 2009.
[27] Florent Sourbier, Stéphane Operto, Jean Virieux, Patrick Amestoy, and Jean-Yves
L’Excellent. FWT2D: A massively parallel program for frequency-domain full-waveform
tomography of wide-aperture seismic data–Part 2: Numerical examples and scalability
analysis. Computers & Geosciences, 35(3):496 – 514, 2009.
[28] Florent Sourbier, Stéphane Operto, Jean Virieux, Patrick Amestoy, and Jean-Yves
L’Excellent. FWT2D: A massively parallel program for frequency-domain full-waveform
tomography of wide-aperture seismic data–Part 1: Algorithm. Computers & Geosciences, 35(3):487 – 495, 2009.
[29] Stefan Buske, Isabelle Lecomte, Tamas Nemeth, Stéphane Operto, and Valenti Sallares.
Imaging and inversion — introduction. Geophysics, 74(6):WCA1–WCA4, 2009.
[30] R. Brossier, S. Operto, and J. Virieux. Seismic imaging of complex onshore structures
by 2D elastic frequency-domain full-waveform inversion. Geophysics, 74(6):WCC105–
WCC118, 2009.
[31] R. Brossier, S. Operto, and J. Virieux. Robust frequency-domain full-waveform
inversion using the l1 norm. Geophysical Research Letters, 36:L20310, 2009.
[32] S. Operto, J. Virieux, A. Ribodetti, and J. E. Anderson. Finite-difference frequencydomain modeling of visco-acoustic wave propagation in two-dimensional TTI media.
Geophysics, 74 (5):T75–T95, 2009.
[33] M. Malinowski and S. Operto. Quantitative imaging of the Permo-Mesozoic complex
and its basement by frequency domain waveform tomography of wide-aperture seismic
data from the Polish basin. Geophysical Prospecting, 56:805–825, 2008.
[34] R. Brossier, J. Virieux, and S. Operto. Parsimonious finite-volume frequency-domain
method for 2-D P-SV-wave modelling. Geophysical Journal International, 175(2):541–
559, 2008.
[35] H. Ben Hadj Ali, S. Operto, and J. Virieux.
Velocity model building by 3D
frequency-domain, full-waveform inversion of wide-aperture seismic data. Geophysics,
73(5):VE101–VE117, 2008.
[36] S. Operto, J. Virieux, P. Amestoy, J-Y. L’Éxcellent, L. Giraud, and H. Ben Hadj Ali.
3D finite-difference frequency-domain modeling of visco-acoustic wave propagation
using a massively parallel direct solver: A feasibility study. Geophysics, 72(5):SM195–
SM211, 2007.
[37] S. Operto, J. Virieux, J. X. Dessa, and G. Pascal. Crustal imaging from multifold ocean bottom seismometers data by frequency-domain full-waveform tomography: application to the eastern Nankai trough. Journal of Geophysical Research,
111(B09306):doi:10.1029/2005JB003835, 2006.
[38] C. Gélis, D. Leparoux, J. Virieux, A. Bitri, S. Operto, and G. Grandjean. Numerical
modeling of surface waves over shallow cavities. Journal of Environmental and
Engineering Geophysics, 10:49–59, 2005.
[39] A. Ribodetti, S. Gaffet, S. Operto, J. Virieux, and G. Saracco. Asymptotic waveform
inversion for unbiased velocity and attenuation measurements: numerical tests and
application for Vesuvius lava sample analysis. Geophysical Journal International,
158:353–371, 2004.
[40] C. Ravaut, S. Operto, L. Improta, J. Virieux, A. Herrero, and P. dell’Aversana. Multiscale imaging of complex structures from multi-fold wide-aperture seismic data by
frequency-domain full-wavefield inversions: application to a thrust belt. Geophysical
Journal International, 159:1032–1056, 2004.
[41] B. Hustedt, S. Operto, and J. Virieux. Mixed-grid and staggered-grid finite difference methods for frequency domain acoustic wave modelling. Geophysical Journal
International, 157:1269–1296, 2004.
[42] J. X. Dessa, S. Operto, S. Kodaira, A. Nakanishi, G. Pascal, J. Virieux, and Y. Kaneda.
Multiscale seismic imaging of the eastern nankai trough by full waveform inversion.
Geophysical Research Letters, 31(L18606):doi:10.1029/2004GL020453, 2004.
[43] J. X. Dessa, S. Operto, S. Kodaira, A. Nakanishi, G. Pascal, K. Uhira, and Y. Kaneda.
Deep seismic imaging of the eastern Nankai trough (Japan) from multifold ocean
bottom seismometer data by combined traveltime tomography and prestack depth
migration. Journal of Geophysical Research, 109(B02111):doi:10.1029/2003JB002689,
2004.
[44] S. Operto, C. Ravaut, L. Improta, J. Virieux, A. Herrero, and P. Dell’Aversana.
Quantitative imaging of complex structures from dense wide-aperture seismic data by
multiscale traveltime and waveform inversions: a case study. Geophysical Prospecting,
52:625–651, 2004.
[45] B. Hustedt, S. Operto, and J. Virieux. A multi-level direct-iterative solver for seismic
wave propagation: space and wavelet approaches. Geophysical Journal International,
155(12):953–980, 2003.
[46] I. Borissova, M. F. Coffin, P. Charvis, and S. Operto. Structure and development of a
microcontinent: Elan bank in the southern ’I’ndian ’O’cean. Geochemistry-GeophysicsGeosystems, 4:1–16, 2003.
[47] S. Operto, G. Lambaré, P. Podvin, and Ph. Thierry. 3-D ray-Born migration/inversion.
part 2: application to the SEG/EAGE overthrust experiment. Geophysics, 68(4):1357–
1370, 2003.
[48] G. Lambaré, S. Operto, P. Podvin, Ph. Thierry, and M. Noble. 3-D ray+Born
migration/inversion - part 1: theory. Geophysics, 68:1348–1356, 2003.
[49] J. Y. Collot, P. Charvis, M. A. Gutscher, and S. Operto. Exploring the ecuadorcolombia active margin and interplate seismogenic zone. Eos, Transactions, American
Geophysical Union, 148(83):185,189–190, 2002.
[50] S. Operto, J. Virieux, B. Hustedt, and F. Malfanti. Adaptative wavelet-based finitedifference modelling of SH-wave propagation. Geophysical Journal International,
148:1–28, 2002.
[51] A. Ribodetti, H. P. Valero, S. Operto, J. Virieux, and D. Gibert. Geophysical
tomography by viscoacoustic asymptotic waveform inversion of ultrasonic laboratory
data. IEEE Transactions on instrumentation and measurement, 50(5):1404–1412,
2001.
[52] K. McIntosh, F. Akbar, C. Calderon, P. Stoffa, S. Operto, G. Christeson, Y. Nakamura,
T. Shipley, E. Flueh, A. Stavenhagen, and G. Leandro. Large aperture seismic imaging
at a convergent margin: Techniques and results from the costa rica seismogenic zone.
Marine Geophysical Researches, 21:451–474, 2000.
[53] S. Operto, S. Xu, and G. Lambaré. Can we image quantitatively complex models with
rays? Geophysics, 65(4):1223–1238, 2000.
[54] A. Ribodetti, S. Operto, J. Virieux, G. Lambaré, H.-P. Valéro, and D. Gibert. Asymptotic viscoacoustic diffraction tomography of ultrasonic laboratory data : a tool for
rock properties analysis. Geophysical Journal International, 140:324–340, 2000.
[55] J. Virieux, A. Ribodetti, S. Operto, and E. Augier. Imagerie sismique haute fréquence.
Bulletin de la Société géologique de France, 170(Numéro spécial: aux frontières des
Géosciences):69–83, 1999.
[56] P. Thierry, S. Operto, and G. Lambaré. Fast 2D ray-Born inversion/migration in
complex media. Geophysics, 64(1):162–181, 1999.
[57] Ph. Charvis and S. Operto. Structure of the Cretaceous Kerguelen Volcanic Province
(southern Indian ocean) from wide-angle seismic data. Journal of Geodynamics,
28:51–71, 1999.
[58] M. Recq, J. Goslin, Ph. Charvis, and S. Operto. Small-scale crustal variability within
an intraplate structure: the Crozet bank (southern Indian ocean). Geophysical Journal
International, 134:145–156, 1998.
[59] S. Operto and Ph.Charvis. Deep structure of the southern Kerguelen plateau (southern
Indian ocean) from ocean bottom seismometer wide-angle seismic data. Journal of
Geophysical Research, 101:25077–25103, 1996.
[60] Ph. Charvis, M. Recq, S. Operto, and D. Brefort. Deep structure of the northern
Kerguelen plateau and hotspot-related activity. Geophysical Journal International,
122:899–924, 1995.
[61] S. Operto and Ph. Charvis. Kerguelen Plateau: a volcanic passive margin fragment?
Geology, 23:137–140, 1995.
[62] Ph. Charvis, S. Operto, L. K. Konnecke, M. Recq, Y. Hello, F. Houdry, P. Lebellegard,
R. Louat, and F. Sage. Stucture profonde du domaine nord du plateau de Kerguelen
(océan Indien austral): résultats préliminaires de la campagne MD66/KeOBS. Comptes
Rendus de l’Académie des Sciences, 316:341–347, 1993.