Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7144| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Dessa, J.-X.; Geoazur, Univ. P. et M. Curie, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Simon, S.; Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Lelievre, M.; Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Beslier, M.-O.; Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Deschamps, A.; Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Bethoux, N.; Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Solarino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
| dc.contributor.authorall | Sage, F.; Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.authorall | Eva, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
| dc.contributor.authorall | Ferretti, G.; DipTeRis, Università degli Studi di Genova, Italy | en |
| dc.contributor.authorall | Bellier, O.; CEREGE, (CNRS UMR 6635, Univ. P. Cézanne Aix-Marseille, IRD, Collège de France), Europole Méditerranéen de l’Arbois, BP 80, 13545 Aix-en-Provence, France | en |
| dc.contributor.authorall | Eva, C.; DipTeRis, Università degli Studi di Genova, Italy | en |
| dc.date.accessioned | 2011-10-06T13:17:14Z | en |
| dc.date.available | 2011-10-06T13:17:14Z | en |
| dc.date.issued | 2011 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/7144 | en |
| dc.description.abstract | The deep structure of the North Ligurian margin and its contiguous Ligurian basin as well as the seismicity recorded in these zones are neither well understood nor precisely constrained. In order to better address these questions, there is a need for offshore instrumenting, which was realised for a duration of nearly 6 months during the GROSMarin (Grand Réseau d’Observation Sous-Marin) experiment. An array of 21 ocean bottom seismometers was deployed over the most active area of the margin and was complemented on land by mobile seismological stations that densified existing permanent networks. We also realised the acquisition of deep refraction seismic shots at sea in order to get a 3D distribution of velocities along the margin through travel time tomography. We present here a preliminary analysis of the seismicity recorded during this experiment and a tomographic model of the margin structures obtained using data from the offshore network only. Our results support the existence of a high velocity zone at the base of a domain interpreted as transitional between continental and oceanic ones, on the northern part of the deep basin. A very similar pattern is observed across the neighbouring margin of the Gulf of Lions and is most likely related to serpentinisation of the underlying mantle during late rifting and continental break-up. North of this transition zone, we observe the basinward crustal thinning of the continental crust beneath the margin that seemingly narrows eastward. To the south, our results hint at transition to the oceanic domain. In contrast, our velocity distribution does not reveal a transition along strike between transitional and oceanic domains, as previous works suggest. Some microseismic activity was recorded throughout the duration of the experiment, on land and at sea. The number of detected events and precision of location were both improved by our considering French and Italian permanent networks. The detection capabilities of our dense network still need to be fully exploited | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Bulletin de la Societe Geologique de France | en |
| dc.relation.ispartofseries | 4/182 (2011) | en |
| dc.subject | North Ligurian margin | en |
| dc.subject | Ocean bottom seismometers | en |
| dc.subject | Refraction tomography | en |
| dc.subject | Velocity structure | en |
| dc.subject | Crustal units | en |
| dc.subject | Microseismicity | en |
| dc.title | The GROSMarin experiment: three dimensional crustal structure of the North Ligurian margin from refraction tomography and preliminary analysis of microseismic measurements | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 305-321 | en |
| dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | en |
| dc.relation.references | AVEDIK F., RENARD V., ALLENOU J.-P. & MORVAN B. (1993). – “Single bubble” air-gun array for deep exploration. – Geophysics, 58, 366-382. BAROUX E., BÉTHOUX N. & BELLIER O. (2001). – Analyses of the stress field in the southeastern France from earthquake focal mechanisms. – Geophys. J. Int., 145, 336-348. BAKUN W.H. & SCOTTI O. (2006). – Regional intensity attenuation models for France and the estimation of magnitude and location of historical earthquakes. – Geophys. J. Int., 164, 596-610. BAYER R., LE MOUEL J.-L. & LE PICHON X. (1973). – Magnetic anomaly pattern in the western Mediterranean. – Earth Planet. Sci. Lett., 19, 168-176. BÉTHOUX N., FRÉCHET J., GUYOTON F., THOUVENOT F., CATTANEO M., EVA C., NICOLAS M. & GRANET M. (1992). – A closing Ligurian Sea ? – Pure Appl. Geophys., 139, 179-194. BÉTHOUX N., TRIC E., CHERY J. & BESLIER M.-O. (2008). – Why is the Ligurian basin (Mediterranean sea) seismogenic ? Thermomechanical modeling of a reactivated passive margin. – Tectonics, 27, doi: 10.1029/2007TC002232. BOILLOT G., FÉRAUD G., RECQ M. & GIRARDEAU J. (1989). – Undercrusting by serpentinite beneath rifted margins. – Nature, 341, 523-525. BOILLOT G., BESLIER M.-O. & GIRARDEAU J. (1995). – Nature, structure and evolution of the ocean-continent boundary: the lesson of the west Galicia margin (Spain). In: E. BANDA et al. Eds, Rifted ocean-continent boundaries. – Kluwer Academic Publishers, London, 219-229. BRUN J.-P. & BESLIER M.-O. (1996). – Mantle exhumation at passive margins. – Earth Planet. Sci. Lett., 142, 161-173. CALAIS E., NOCQUET J.-M., JOUANNE F. & TARDY M. (2002). – Current strain regime in the western Alps from continuous global positioning system measurements, 1996-2001. – Geology, 30(7), 651-654. CHAMOT-ROOKE N., GAULIER J.-M. & JESTIN F. (1999). – Constraints on Moho depth and crustal thickness in the Liguro-Provençal basin from 3D gravity inversion: geodynamic implications. In: B. DURAND et al., Eds., The Mediterranean basins: Tertiary extension within the Alpine orogen. – Geol. Soc. London, Sp. Publ., 156, 37-62. CHIAN D., LOUDEN K.E. & REID I. (1995). – Crustal structure of the Labrador Sea conjugate margin and implications for the formation of nonvolcanic continental margins. – J. Geophys. Res., 100, 24 239-24 253. CONTRUCCI I., NERCESSIAN A., BÉTHOUX N., MAUFFRET A. & PASCAL G. (2001). – A Ligurian (western Mediterranean Sea) geophysical transect revisited. – Geophys. J. Int., 146, 74-97. COURBOULEX F, DUVAL A.-M., DESCHAMPS A., LOMAX A. & LARROQUE C. (2001). – All the small Peille (Alpes Maritimes, France) earthquake can teach us. – C. R. Acad. Sci., Paris, 333, 105-112. COURBOULEX F., LARROQUE C., DESCHAMPS A., KOHRS-SANSORNY C., GÉLIS C., GOT J.-L., CHARREAU J., STÉPHAN J.-F., BÉTHOUX N., VIRIEUX J., BRUNEL D., MARON C., DUVAL A.-M., PEREZ J.-L. & MONDIELI P. (2007). – Seismic hazard on the French Riviera: observations, interpretations and simulations. – Geophys. J. Int., 170, 387-400. DEAN S.M., MINSHULL T.A., WHITMARSH R.B. & LOUDEN K.E. (2000). – Deep structure of the ocean-continent transition in the southern Iberia Abyssal Plain from seismic refraction profiles: The IAM-9 transect at 40o20’N. – J. Geophys. Res., 105, 5859-5885. DERCOURT J., ZONENSHAIN L.P., RICOU L.E., KASMIN V.G., LE PICHON X., KNIPPER A.L., GRANDJACQUET C., SBORSCHIKOV I.M. , GEYSSANT J., LEPVRIER C., PECHERSKY D.H., BOULIN J., SIBUET J.-C., SAVOSTIN L.A., SOROKHTIN O., WESTPHAL M., BAZHENOV M.L., LAUER J.-P. & BIJU-DUVAL B. (1986). – Geological evolution of the Tethys belt from the Atlantic to Pamirs since the Lias. – Tectonophysics, 123, 241-315. EVA E., SOLARINO S. & SPALLAROSSA D. (2001). – Seismicity and crustal structure beneath the western Ligurian sea derived from local earthquake tomography. – Tectonophysics, 339, 495-510. FACCENNA C., MATTEI M., FUNICELLO R. & JOLIVET L. (1997). – Styles of back-arc extension in the Central Mediterranean. – Terra Nova, 9, 126-130. GAILLER A., KLINGELHOEFER F., OLIVET J.-L., ASLANIAN D. & Sardinia scientific party and technical obs team (2009). – Crustal structure of a young margin pair: New results across the Liguro-Provencal basin from wide-angle seismic tomography. – Earth Planet. Sci. Lett., 286, 333-345. GALDÉANO A. & ROSSIGNOL J.-C. (1977). – Assemblage à altitude constante des cartes d’anomalies magnétiques couvrant l’ensemble du bassin occidental de la Méditerranée. – Bull. Soc. géol. Fr., 1, XIX, 3, 461-468. GATTACCECA J., DEINO A., RIZZO R., JONES D.S., HENRY B., BEAUDOIN B. & VEDEBOIN F. (2007). – Miocene rotation of Sardinia: new paleomagnetic and geochronological constraints and geodynamic implications. – Earth Planet. Sci. Lett., 258, 359-377. GUEGUEN E. (1995). – La Méditerranée occidentale: Un véritable océan, exemple de segmentation des marges et de hiatus cinématiques, implications sur les processus d’amincissement crustal, 311 p. – Thèse de doctorat, Univ. de Bretagne Occidentale, Brest, France. HAVSKOV J. & OTTEMÖLLER L. (2000). – SEISAN earthquake analysis software. – Seismol. Res. Lett., 70, 532-534. HOLE J.A. & ZELT B.C. (1995). – 3-D finite-difference reflection travel-times. – Geophys. J. Int., 121, 427-434. KLEIN F.W. (1985). – Users guide for HYPOINVERSE, a program for Vax and PC350 computers to solve for earthquake locations. – U.S. Geol. Surv., open-file report, 85-515. LARROQUE C., BÉTHOUX N., CALAIS E., COURBOULEX F., DESCHAMPS A., DÉVERCHÈRE J., STÉPHAN J.-F., RITZ J.-F. & GILLI E. (2001). – Active deformation at the junction between southern French Alps and Ligurian basin. – Netherlands J. Geosci., 80, 255-272. LARROQUE C., DELOUIS B., GODEL B. & NOCQUET J.-M. (2009). – Active deformation at the southwestern Alps-Ligurian basin junction (France-Italy boundary): Evidence for recent change from compression to extension in the Argentera massif. – Tectonophysics, 467, 22-34. LE DOUARAN S., BURRUS J. & AVEDIK F. (1984). – Deep structure of the northwestern Mediterranean basin: results of a two-ship seismic survey. – Mar. Geol., 55, 325-345. MANATSCHAL G. (2004). – New models for evolution of magma-poor rifted margins based on a review of data and concepts from West Iberia and the Alps. – Int. J. Earth Sci., 93, 432-466. MAUFFRET A., PASCAL G., MAILLARD A. & GORINI C. (1995). – Tectonics and deep structure of the northwestern Mediterranean basin. – Mar. Petrol. Geol., 12, 645-666. MIGEON S., SAVOYE B. & FAUGÈRES J.-C. (2000). – Quaternary development of migrating sediment waves in the Var deep-sea fan: distribution, growth pattern, and implication for levee evolution. – Sedim. Geol., 133, 265-293. MIGEON S., CATTANEO A., HASSOUN V., LARROQUE C., MERCIER DE LÉPINAY B., CORRADI N. & FANUCCI F. (2009). – Submarine instabilities along the Ligurian margin (NW Mediterranean): types, distribution and causes. – International Conference on Sea floor mapping for geohazard assessment (session 4), Forio d’Ischia (Italy) may 11-13, 2009. – Rend. online – Soc. Geol. Ital., 7, 113-117. MONTEILLER V., GOT J.-L., VIRIEUX J. & OKUBO P. (2005). – An efficient algorithm for double-difference tomography and location in heterogeneous media, with an application to the Kilauea volcano. – J. Geophys. Res., 110, B12306, doi: 10.1029/2004JB003466. PASCAL G., MAUFFRET A. & PATRIAT P. (1993). – The ocean-continent boundary in the Gulf of Lion from analysis of expanding spread profiles and gravity modelling. – Geophys. J. Int., 113, 701-726. PASQUALE V., VERDOVA M. & CHIOZZI P. (1994). – Types of crust beneath the Ligurian Sea. – Terra Nova, 6, 255-266. PÉREZ-GUSSINYÉ M. & RESTON T.J. (2001). – Rheological evolution during extension at nonvolcanic rifted margins: Onset of serpentinization and development of detachments leading to continental breakup. – J. Geophys. Res., 106, 3961-3975. PINHEIRO L.M., WHITMARSH R.B. & MILES P.R. (1992). – The continentocean boundary off the western continental margin of Iberia – II. Crustal structure in the Tagus abyssal plain. – Geophys. J. Int., 109, 106-124. REID I. (1994). – Crustal structure of a non volcanic rifted margin east of Newfoundland. – J. Geophys. Res., 99, 15 161-15 180. RÉHAULT J.-P. & BÉTHOUX N. (1984). – Earthquake relocation in Ligurian sea (western Mediterranean). – Mar. Geol., 55, 429– 445. RÉHAULT J.-P., BOILLOT G. & MAUFFRET A. (1984). – The western Mediterranean basin geological evolution. – Mar. Geol., 55, 447-477. ROLLET N., DÉVERCHÈRE J., BESLIER M.-O., GUENNOC P., RÉHAULT J.-P., SOSSON M. & TRUFFERT C. (2002). – Back arc extension, tectonic inheritance and volcanism in the Ligurian Sea, western Mediterranean. – Tectonics, 21, doi: 10.1029/2001TC900027. SAGE F., BESLIER M.-O., THINON I., LARROQUE C., DESSA J.-X., MIGEON S., ANGELIER J., GUENNOC P., SCHREIBER D., MICHAUD F., STÉPHAN J.-F. & SONNETTE L. (2011). – Structure and evolution of a passive margin in a compressive environment: example of the southwestern Alps–Ligurian basin junction during the Cenozoic. – Mar. Petrol. Geol., 28, 1263-1282. SAGE F., PONTOISE B., MASCLE J. & BASILE C. (1997). – Structure of the oceanic crust adjacent to a transform margin segment: the Côte d’Ivoire-Ghana transform margin. – Geo-Mar. Lett., 17, 31-39. SPERANZA F., VILLA I.M., SAGNOTTI L., FLORINDO F., COSTENTINO D., CIPOLLARI P. & MATTEI M. (2002). – Age of the Corsica-Sardinia rotation and Liguro-Provençal basin spreading: new paleomagnetic and Ar/Ar evidence. – Tectonophysics, 347, 231-251. THINON I., MATIAS L., RÉHAULT J.-P., HIRN A., FIDALGO-GONZALEZ L. & AVEDIK F. (2003). – Deep structure of the Armorican basin (bay of Biscay): a review of Norgasis seismic reflection and refraction data. – J. Geol. Soc., London, 160, 99-116. TURINO C., SCAFIDI D., EVA E. & SOLARINO S. (2009). – Inferences on active faults at the southern Alps-Liguria basin junction from accurate analysis of low energy seismicity. – Tectonophysics, 475, 470-479. VAN AVENDONK H.J.A., HOLBROOK W.S., NUNES G.T., SHILLINGTON D.J., TUCHOLKE B.E., LOUDEN K.E., LARSEN H.C. & HOPPER J.R. (2006). – Seismic velocity structure of the rifted margin of the eastern Grand Banks of Newfoundland, Canada. – J. Geophys. Res., 111, B11404, doi: 10.1029/2005jb004156 WESSEL P. & SMITH W.H.F. (1995). – New version of the generic mapping tools released. – Eos Trans. AGU, 76(33), 329. WHITMARSH R.B., PINHEIRO L.M., MILES P.R., RECQ M. & SIBUET J.-C. (1993). – Thin crust at the western Iberia ocean-continent transition and ophiolites. – Tectonics, 12, 1230-1239. WHITMARSH R.B., WHITE R.S., HORSEFIELD S.J., SIBUET J.-C., RECQ M. & LOUVEL V. (1996a). – The ocean-continent boundary off the western continental margin of Iberia: crustal structure west of Galicia bank. – J. Geophys. Res., 101, 28 291-28 314. WHITMARSH R.B., SAWYER D.S., KLAUS A. & MASSON D.G., Eds., (1996b). – Proc. ODP, Sci. Results, 149. – College Station, TX, (Ocean Drilling Program), 785 p. ZELT C.A. & BARTON P.J. (1998). – Three-dimensional seismic refraction tomography: a comparison of two methods applied to data from the Faeroe basin. – J. Geophys. Res., 103, 7187-7210. | en |
| dc.description.obiettivoSpecifico | 3.3. Geodinamica e struttura dell'interno della Terra | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | restricted | en |
| dc.contributor.author | Dessa, J.-X. | en |
| dc.contributor.author | Simon, S. | en |
| dc.contributor.author | Lelievre, M. | en |
| dc.contributor.author | Beslier, M.-O. | en |
| dc.contributor.author | Deschamps, A. | en |
| dc.contributor.author | Bethoux, N. | en |
| dc.contributor.author | Solarino, S. | en |
| dc.contributor.author | Sage, F. | en |
| dc.contributor.author | Eva, E. | en |
| dc.contributor.author | Ferretti, G. | en |
| dc.contributor.author | Bellier, O. | en |
| dc.contributor.author | Eva, C. | en |
| dc.contributor.department | Geoazur, Univ. P. et M. Curie, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
| dc.contributor.department | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
| dc.contributor.department | DipTeRis, Università degli Studi di Genova, Italy | en |
| dc.contributor.department | CEREGE, (CNRS UMR 6635, Univ. P. Cézanne Aix-Marseille, IRD, Collège de France), Europole Méditerranéen de l’Arbois, BP 80, 13545 Aix-en-Provence, France | en |
| dc.contributor.department | DipTeRis, Università degli Studi di Genova, Italy | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | restricted | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | UPMC/OCA/UNS/INSU-CNRS/IRD | - |
| crisitem.author.dept | UPMC/OCA/UNS/INSU-CNRS/IRD | - |
| crisitem.author.dept | UPMC/OCA/UNS/INSU-CNRS/IRD | - |
| crisitem.author.dept | UMR Geosciences Azur Villefranche sur Mer, France | - |
| crisitem.author.dept | UPMC/OCA/UNS/INSU-CNRS/IRD | - |
| crisitem.author.dept | UPMC/OCA/UNS/INSU-CNRS/IRD | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
| crisitem.author.dept | Geoazur, Univ. Nice Sophia Antipolis, CNRS, IRD, Obs. Côte d’Azur, Quai de la Darse, BP 48, 06235 Villefranche/Mer, France | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
| crisitem.author.dept | Università di Genova - Genova - Italy | - |
| crisitem.author.dept | CEREGE, Aix-en-Provence, France | - |
| crisitem.author.dept | DipTeRis Dipartimento per lo studio del territorio e delle sue risorse, Università di Genova | - |
| crisitem.author.orcid | 0000-0002-9577-1347 | - |
| crisitem.author.orcid | 0000-0001-6054-1325 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| 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 | - |
| Appears in Collections: | Article published / in press | |
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