Lénat Jean-François

Lenat_Jean-Francois

Professeur Emérite, UCA-OPGC
Équipe de Volcanologie
Physicien
Bureau: 1.07 - LMV Cezeaux
Téléphone: 04.73.34.67.25
Courriel : J.F.Lenat@opgc.univ-bpclermont.fr

  • Thèmes de Recherche :

    • Thèmes : Structure, fonctionnement systèmes hydrothermaux des volcans.
    • Objets : Réunion, Vanuatu, Pérou, Grande Comore, Hawaii.
    • Outils : géophysique (magnétisme, gravimétrie, géoélectricité, électromagnétisme), télédétection (imagerie satellite, sonar, MNT), modélisation.

    Responsabilités scientifiques et administratives :

    • Responsable de l’équipe Volcanologie (22 chercheurs permanents) de l’UMR 6524 (2011-2014)
    • Responsable Thème 2 du Labex ClerVolc (Internal structure and deformation of volcanic edifices) (2011-2015)
    • Directeur adjoint UMR 6524 “Magmas et Volcans” (2007-2011)
    • Directeur adjoint de l’OPGC (1989-98 et 2007-08)
    • Chargé de mission à l’INSU (2002- 2006)

    Information scientifique, technique et vulgarisation :

    • Interventions sur le volcanisme dans les médias (radio, télévision) et conférences.

    Activités d’enseignement :

    • Etablissement : Université Clermont Auvergne
    • -avant retraite en 2015- Discipline : géophysique, télédétection et traitement d’images, volcanologie
    • Encadrement de thèses (14 depuis 1988), Master 1 (12 depuis 1997) et Master 2 (12 depuis 1988); Jury de thèse et HDR (62)

  • Publications depuis 2010 :

    Rang A :

    • Bachèlery P., Lénat J.F., Di Muro A., Michon L. (2016). Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala. Active Volcanoes of the World. Springer-Verlag Berlin and Heidelberg (ed.) (ed.).
    • Brothelande E., Lénat J.F., Chaput M., Gailler L., Finizola A., Dumont S., Peltier A., Bachèlery P., Barde-Cabusson S., Byrdina S., Menny P., Colonge J., Douille G.A., Letort J., Letourneur L., Merle O., Di Gangi F., Nakedau D., Garaebiti E. (2016). Structure and evolution of an active resurgent dome evidenced by geophysical investigations: The Yenkahe dome-Yasur volcano system (Siwi caldera, Vanuatu). Journal of Volcanology and Geothermal Research vol.322, p.241-262, doi:10.1016/j.jvolgeores.2015.08.021.
    • Brothelande E., Lénat J.F., Normier A., Bacri C., Peltier A., Kelfoun K., Merle O., Finizola A., Garaebiti E. (2016). Insights into the evolution of the Yenkahe resurgent dome (Siwi caldera, Tanna Island, Vanuatu) inferred from aerial high-resolution photogrammetry. Journal of Volcanology and Geothermal Research vol.322, p.212-224, doi:10.1016/j.jvolgeores.2015.04.006.
    • Gailler L., Lénat J.F., Blakely R.J. (2016). Depth to Curie temperature or bottom of the magnetic sources in the volcanic zone of la Réunion hot spot. Journal of Volcanology and Geothermal Research vol.324, p.169-178, doi:10.1016/j.jvolgeores.2016.06.005.
    • Lénat J.F. (2016). A brief history of the observation of the Central area of Piton de la Fournaise. p.3-21, Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala. Active Volcanoes of the World, Bachèlery, P., Lénat, J.-F., Di Muro, A., Michon, L. (Editor), doi: 10,1007/978-3-642-31395-0_1, Springer-Verlag Berlin and Heidelberg (ed.).
    • Lénat J.F. (2016). Construction of La Réunion. p.31-44, Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala. Active Volcanoes of the World, Bachèlery, P., Lénat, J.-F., Di Muro, A., Michon, L. (Editor), doi: 10,1007/978-3-642-31395-0_1, Springer-Verlag Berlin and Heidelberg (ed.).
    • Lénat J.F. (2016). Geodynamic setting of La Réunion Island. p.23-30, Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala. Active Volcanoes of the World,Bachèlery, P., Lénat, J.-F., Di Muro, A., Michon, L. (Editor), doi: 10,1007/978-3-642-31395-0_1, Springer-Verlag Berlin and Heidelberg (ed.).
    • Michon L., Lénat J.F., Bachèlery P., Di Muro A. (2016). Geology and morphostructural Evolution of Piton de la Fournaise. p.45-59, Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala. Active Volcanoes of the World, doi: 10,1007/978-3-642-31395-0_1, Springer-Verlag Berlin and Heidelberg (ed.).
    • Portal A., Gailler L., Labazuy P., Lénat J.F. (2016). Geophysical imaging of the inner structure of a lava dome and its environment through gravimetry and magnetism. Journal of Volcanology and Geothermal Research vol.320, p.88-99, doi:10.1016/j.jvolgeores.2016.04.012.
    • Ambrosino F., Anastasio A., Bross A., Béné S., Boivin P., Bonechi L., Cârloganu C., Ciaranfi R., Cimmino L., Combaret Ch., D’Alessandro R., Durand S., Fehr F., Français V., Garufi F., Gailler L., Labazuy P., Laktineh I., Lénat J.F., Masone V., Miallier D., Mirabito L., Morel L., Mori N., Niess V., Noli P., Pla-Dalmau A., Portal A., Rubinov P., Saracino G., Scarlini E., Strolin P., Vulpescu B. (2015). Joint measurement of the atmospheric muon flux through the Puy de Dôme volcano with plastic scintillators and Resistive Plate Chambers detectors. Journal of Geophysical Research - Solid Earth vol.120, 7290-7307, doi:10.1002/2015JB011969.
    • Brothelande E., Lénat J.F., Normier A., Bacri C., Peltier A., Paris R., Kelfoun K., Merle O., Finizola A., Garaebiti E. (2015). Insights into the evolution of the Yenkahe resurgent dome (Siwi caldera, Tanna Island, Vanuatu) inferred from aerial high-resolution photogrammetry. Journal of Volcanology and Geothermal Research vol.299, p.78-90, doi:10.1016/j.jvolgeores.2015.04.006.
    • Froger J., Famin V., Cayol V., Augier A., Michon L., Lénat J.F. (2015). Time-dependent displacements during and after the April 2007 eruption of Piton de la Fournaise, revealed by interferometric data. Journal of Volcanology and Geothermal Research vol.296, p.55-68, doi:10.1016/j.jvolgeores.2015.02.014.
    • Gonzales K., Finizola A., Lénat J.F., Macedo O., Ramos D., Thouret J.C., Fournier N., Cruz V., Pistre K. (2014). Asymmetrical structure, hydrothermal system and edifice stability: The case of Ubinas volcano, Peru, revealed by geophysical surveys. Journal of Volcanology and Geothermal Research vol.276, p.132-144, doi:10.1016/j.jvolgeores.2014.02.020.
    • Kornprobst J., Lénat J.F. (2014). Centenary of the Discovery of Earth’s Magnetic Field Reversals. EOS 44, 401. .
    • Béné S., Boivin P., Busato E., Cârloganu C., Combaret C., Dupieux P., Fehr F., Gay P., Labazuy P., Laktineth I., Lénat J.F., Miallier D., Mirabito L., Niess V., Portal A., Vulpescu B. (2013). Air shower simulation for background estimation in muon tomography of volcanoes: Geoscientifc Instrumentation Methods and Data Systems, v. 2, p. 11-15, 10.5194/gi-2-11-2013. .
    • Cârloganu C., Niess V., Béné S., Busato E., Dupieux P., Fehr F., Gay P., Miallier D., Vulpescu B., Boivin P., Combaret C., Labazuy P., Laktineth I., Lénat J.F., Mirabito L., Portal A. (2013). Towards a muon radiography of the Puy de Dôme: Geoscientifc Instrumentation Methods and Data Systems, v. 2, p. 55-60. doi:10.5194/gi-2-55-2013.
    • Merle O., Brothelande E., Bachèlery P., Lénat J.F., Garabéiti E. (2013). A structural outline of the Yenkahe volcanic resurgent dome (Tanna Island, Vanuatu Arc, South Pacific): Journal of Volcanology and Geothermal Research, v. 268, p. 64-72. doi:10.1016/j.jvolgeores.2013.10.009.
    • Portal A., Labazuy P., Lénat J.F., Béné S., Boivin P., Busato E., Cârloganu C., Combaret C., Dupieux P., Fehr F., Gay P., Laktineth I., Miallier D., Mirabito L., Niess V., Vulpescu B. (2013). Inner structure of the Puy de Dˆome volcano: cross-comparison of geophysical models (ERT, gravimetry, muon imaging): Geoscientifc Instrumentation Methods and Data Systems, v. 2, p. 47-54. doi:10.5194/gi-2-47-2013.
    • Cârloganu C., Niess V., Béné S., Busato E., Dupieux P., Fehr F., Gay P., Miallier D., Vulpescu B., Boivin P., Combaret C., Labazuy P., Laktineh I., Lénat J.F., Mirabito L., Portal A. (2012). Towards a muon radiography of the Puy de Dôme. Geoscientific Instrumentation, Methods and Data Systems. .
    • Gailler L., Lénat J.F. (2012). Internal architecture of La Réunion (Indian Ocean) inferred from geophysical data. Journal of Volcanology and Geothermal Research 221-222, 83-98. doi:10.1016/j.jvolgeores.2012.01.015.
    • Lénat J.F., Bachèlery P., Merle O. (2012). Anatomy of Piton de la Fournaise volcano (La Réunion, Indian Ocean). Bulletin of Volcanology vol.74, p.1945-1961, 9, doi:10.1007/s00445-012-0640-y.
    • Lénat J.F., Bachèlery P., Peltier A. (2012). The interplay between collapse structures, hydrothermal systems and magma intrusions: the case of the central area of Piton de la Fournaise volcano. Bulletin of Volcanology 74, 407-421. doi:10.1007/s00445-011-0535-3.
    • Portal A., Labazuy P., Lénat J.F., Béné S., Boivin P., Busato E., Cârloganu C., Combaret C., Dupieux P., Fehr F., Gay P., Laktineh I., Miallier D., Mirabito L., Niess V., Vulpescu B. (2012). Inner structure of the Puy de Dôme volcano: cross-comparison of geophysical models (ERT, Gravimetry, Muonic Imagery). Geoscientific Instrumentation, Methods and Data Systems 2, 703-717. doi:710.5194/gid-5192-5703-2012.
    • Gailler L., Lénat J.F. (2010). Three-dimensional structure of the submarine flanks of La Réunion inferred from geophysical data. Journal of Geophysical Research, 115, B12105. doi:10.1029/2009JB007193.

    Rang B et C :

    • Portal A., Fargier Y., Lénat J.F., Labazuy P. (2016). Contribution of 3D inversion of Electrical Resistivity Tomography data applied to volcanic structures. EGU2016-8549, Session SM4.3/GMPV5.16 Geophysical Imaging of Volcanoes.
    • Gailler L., Lénat J.F., Blakely R.J. (2015). Depth to Curie temperature or magnetic sources bottom in the volcanic zone of La Réunion hot spot. vol.17, p.EGU2015-6060, EGU General Assembly 2015, Geophysical Research Abstracts,, Vienna, Austria, 12 – 17 April 2015.
    • Portal A., Fargier Y., Labazuy P., Lénat J.F. (2015). Internal structure of a complex lava dome inferred from geophysical imaging - Part I: 2D and 3D electrical resistivity tomography inversion approaches. vol.17, p.EGU2015-3847, EGU General Assembly 2015, Geophysical Research Abstracts, Vienna (Austria), 12 - 17 April 2015..
    • Portal A., Fargier Y., Lénat J.F., Labazuy P. (2015). Electrical resistivity tomography applied to a complex lava dome: 2D and 3D models comparison. vol.17, p.EGU2015-3862, EGU General Assembly 2015, Geophysical Research Abstracts, Vienna (Austria), 12 – 17 April 2015.
    • Portal A., Gailler L., Lénat J.F., Labazuy P. (2015). Internal structure of a complex lava dome and of its surrounding inferred from gravity and magnetic data. vol.17, p.EGU2015-3847, EGU General Assembly 2015, Geophysical Research Abstracts, Vienna (Austria), 12 – 17 April 2015.
    • Portal A., Lénat J.F., Labazuy P. (2014). Inversion of gravity and electrical resistivity tomography data. Geophysical study of the Puy de Dôme volcano summit part. NEMOH School in Dublin (Ireland), Inverse methods in geophysics and volcanology, August 31st – September 5th, 2014. .
    • Brothelande E., Lénat J.F., Merle O., Peltier A. (2013). Caldera resurgence: new insights from the study of the Siwi-Yenkahe-Yasur system (Vanuatu). in AGU Fall Meeting 2013, abstract session V025. .
    • Lénat J.F., Portal A., Labazuy P., TOMUVOL Collaboration (2013). Geophysical study of a volcanic edifice for comparison with muon imagery. in IAVCEI. Session 2-2c: imaging volcanoes and geothermal systems with muon radiography. July 20-24, 2013. Kagoshima. Japan. .
    • Portal A., Labazuy P., Lénat J.F., TOMUVOL Collaboration (2013). Geophysical study of a volcanic edifice for comparison with muon imaging. in IAVCEI 2013 Scientific Assembly - July 20 - 24, Kagoshima, Japan, p 399. .
    • Brothelande E., Finizola A., Revil A., Delcher E., Ricci T., Johnson T., Peltier A., Barde-Cabusson S., Chaput M., Douillet G., Letort J., Borgogno G., Trovato C., Passarella M., Byrdina S., Lupi M., Bailly T., Colonge J., Di Gangi F., Lénat J.F., Torres L. (2012). Etude pluridisciplinaire du Stromboli (Italie), de la Soufrière de Guadeloupe et du Yasur (Vanuatu) combinant tomographie de résistivité électrique, polarisation spontanée, température et CO2. Colloque 2012 du Comité National Français de Géodésie et Géoph.
    • Brothelande E., Lénat J.F., Merle O., Peltier A., a.A.V. team (2012). Active resurgence at Siwi caldera : new insights on the structure and activity of the Yenkahe horst. IAVCEI 4th International Workshop on Collapse Calderas, September 23-29, 2012, Vulsini Calderas, Italy. .
    • Gailler L., Lénat J.F. (2012). Internal architecture of La Réunion (Indian Ocean) inferred from geophysical data. Muon and Neutrino Radiography, April 18-20, Clermont-Ferrand, France. .
    • Cârloganu C., TOMUVOL Collaboration (2011). Density Imaging of Volcanos with Atmospheric Muons: The 2011 Europhysics Conference on High Energy Physics-HEP 2011. July 21-27, 2011 Grenoble, Rhône-Alpes France. Proceedings of Sciences. 5 p. .
    • Lénat J.F., TOMUVOL Collaboration (2011). Anatomy of a lava dome using muon radiography and electrical resistivity tomography: AGU Fall Metting, San-Francisco, 3-9 Dec. 2011, V41H-03. .
    • Gailler L., Lénat J.F. (2010). Architecture and evolution of La Réunion inferred from geophysical data. in EGU General Assembly 2010, Geophysical Research Abstracts, Vol. 12, EGU2010-4320. .

 

 

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