Cinzia G. Farnetani
Associate Professor
Present address:
Laboratoire de Dynamique des Fluides Géologiques
Institut de Physique du Globe, Boite 89
4 pl. Jussieu
75252 Paris, France
Tower 14, 1st floor, office 13
Phone: +33 1 44-27-47-96
Fax: +33 1 44-27-24-81
e-mail : cinzia@ipgp.jussieu.fr
Academic background:
1988 Laurea in Scienze Geologiche, Universita' di Padova, Italy
1992 Master in Geophysics, University of California at Berkeley, USA
1995 Ph.D. in Geophysics, University of California at Berkeley, USA
1996-Present, Maitre de Conférences, Université Paris VII
Research interests:
Beloved mantle plumes (For new figures see below). Thermo chemical mantle convection. Mantle stirring processes. Interaction plume- lithosphere and melting processes.
Publications:
C. G. Farnetani and M. A. Richards, 1994 Numerical investigation of the mantle plume initiation model for flood basalt events, J. Geophys. Res., 99, 13813-13883.
C. G. Farnetani and M. A. Richards, 1995 Thermal entrainment and melting in mantle plumes, Earth Planet. Sci. Lett., 136, 251-267.
C. G. Farnetani, M. A. Richards, and M. S. Ghiorso, 1996 Petrological models of magma evolution and deep crustal structure beneath hotspots and flood basalt provinces, Earth Planet. Sci. Lett., 143, 81-94.
C. G. Farnetani, 1997 Excess temperature of mantle plumes: The role of chemical stratification across D'', Geophys. Res. Lett., 24, 1583-1586.
C. G. Farnetani, B. Legras and P. J. Tackley, 2002 Mixing and deformations in mantle plumes, Earth Planet. Sci. Lett., 196, 1-15. PDF
C. G. Farnetani and H. Samuel, 2003 Lagrangian structures and stirring in the Earth's mantle, Earth Planet. Sci. Lett., 206, 335-348, PDF ANIMATIONS
H. Samuel and C. G. Farnetani, 2003 Thermochemical convection and helium concentrations in mantle plumes, Earth Planet. Sci. Lett., 207, 39-56, 2003 (For PDF see Samuel Henri Web page: http://www.geology.yale.edu/~hs344/WORK/reasearch.html)
C.G. Farnetani, H. Samuel, 2005 Beyond the thermal plume paradigm, Geophys. Res. Lett. Vol. 32, L07311, doi:10.1029/2005GL022360, (soon PDF)
H. Samuel, C. G. Farnetani and D. Andrault, 2005 Heterogeneous lowermost mantle: Compositional constraints and seismological observables, in press AGU Monograph, Edited by R.D. van der Hilst et al., (for PDF see Samuel Henri Web page: http://www.geology.yale.edu/~hs344/WORK/reasearch.html)
Professional activities 2005:
Membre du Conseil National des Université (CNU), Section 35
Directeur d'études pour la Licence, Université Paris VII
Membre de la commission des Spécialistes des 35/36 ème sections
Co-directeur du '9th European Workshop on modeling of mantle convection and lithospheric dynamics, Erice, Italy, 8-14 Septembre 2005.
Awards:
2004, Doornbos Memorial Prize, Studies of the Earth's Deep Interior, Garmisch, Germany (Thank you SEDI!)
Recent Figures on plumes (see GRL 2005 for text!)
Figure 1. Top: Potential temperature, Bottom: Tracers marking chemically denser material. Time evolution of the plume. Predicted surface expression: a large plume head (600km diameter, 250-300C hotter than the surrounding mantle), followed by vigorous hotspot activity. Tail buoyancy flux 10-12 Mg/s. Plume head sheared by a left moving oceanic plate (Vplate=6 cm/yr)
Figure 2. Top: Potential temperature, Bottom: Tracers marking chemically denser material. Time evolution of the plume. Predicted surface expression: NO plume head, but only a 'tail' or 'hot finger' (100-150C hotter than the surrounding mantle, followed by weak hotspot activity Tail buoyancy flux less than 1 Mg/s. Plume head sheared by a left moving oceanic plate (Vplate=6 cm/yr)
Note1: The 'filter effect of the phase transition at 670km depth is evident in both plumes.
Note2: These are 2D slices of 3D plumes. The 3D domain has a size of 8670:4225:2890km in X:Y:Z directions, respectively.
Figure 3: Looking inside a plume tail: Right: horizontal cross section of a plume tail. Contours for excess temperature (bold lines +100C and +200C). Colors indicate position of passive tracers that initially formed 'cubes', 400km size, see insert for relative horizontal pack's distribution. Therm-chemical plume tails can be highly heterogeneous. Left: Deep mantle heterogeneities rise like distinct filaments in the plume tail, and are sheared by the left moving oceanic plate. If you want to link filaments and geochemistry have a look at Abouchami et al, Nature April 14 2005.
Figure 4: Calculates S-wave velocity anomalies for a variety of plumes.
Note1: Depth=Lower mantle only. Note2: All the underlying theory for seismic velocity calculations is given in Samuel et al., 2005 AGU Monograph.
Soon more figures and animations
Teaching activity 2005-2006 at UFR Sciences Physiques de la Terre:
Continum Mechanics (L3, cours et TD); Travail d'étude (L3, cours), Découverte des Géosciences (L1, cours), Dynamique des fluides (M1, TD)
Personal photos with Tiziana:
PHOTO.02, Tiziana, spring 2002
PHOTO.03, Cinzia & Tiziana, summer 2002