BORN : March 30, 1949, at Erquy, France ; Male.

EDUCATION :

• Ecole Normale Supérieure de Saint-Cloud, Physics (1968-73) and Caltech (1971-72)
• PhD, University of Nantes (1979).

POSITIONS HELD :

• CNRS fellow, Nantes University (1973- 1981).
• Professor of Geophysics, Institut de Physique du Globe, Université Louis Pasteur, Strasbourg (1981-1993).
• Professor of Geophysics, Rennes University, (1993- 1996).
• Professor of Geophysics, Ecole Normale Supérieure, Paris (1996- present).

SCIENTIFIC CONTRIBUTIONS :

• Mechanics of mantle rocks deformation: natural and experimental deformation of olivine and peridotites. Research on dislocation creep processes and dislocation induced attenuation of seismic waves .
• Role of fluids in the mechanical behaviour of the crust. Research on percolation models applied to rock transport properties and crustal structures. Development of physical compaction models.
• Investigation of elastic properties of porous/cracked saturated rocks, frequency effect. Development of effective media models and poroelastic models.

SELECTED PUBLICATIONS :

Guéguen, Y., and Mercier, J.M., 1973. High attenuation and the low velocity zone. Phys. of the Earth and Plan. Int., 7, 39-46.

Green, H.W., and Guéguen, Y., 1974. Kimberlite pipes : origin by diapiric upwelling in the upper mantle. Nature, 249, 5458, 617-620.

Boullier, A.M., and Guéguen, Y., 1975. SP mylonites : origin of some mylonites by superplastic flow. Contr. To Mineral. And Petrol., 50, 93-104.

Guéguen, Y., 1979. High temperature olivine creep : evidence for control by edge dislocations. Geophys. Res. Letters, 6, 5, 357-360.

Guéguen, Y., and Nicolas, A., 1980. Mantle rocks deformation. Ann. Rev. of Earth Sc., 8, 119-144.

Darot, M., and Guéguen, Y., 1981. High temperature creep of forsterite single crystals. J. Geophys. Res., 86, 6219-6234.

Guéguen, Y., David, C., and Darot, M., 1986. Models and time constants for permeability evolution in crystalline rocks. Geophys. Res. Letters, 13, 460-463.

Guéguen, Y., and Dienes, J., 1989. Transport properties of rocks from statistics and percolation. J. Math. Geology, 29, 1, 1-13.

Guéguen, Y., Darot, M., Mazot, P., and Woirgard, J.,1989. Q -1 of forsterite single crystals. Phys. of the Earth and Plan. Int., 55, 3-4, 254-258.

Guéguen, Y., David, C., and Gavrilenko, P., 1991. Percolation networks and fluid transport in the crust. Geophys. Res. Letters, 18, 931-934.

Le Ravalec, M., Guéguen, Y., and Chelidze, T., 1996. Elastic waves velocities in partially saturated rocks : saturation hysteresis. J. Geophys. Res. , 101, 837-844.

Le Ravalec, M., Guéguen, Y., and Chelidze, T., 1996. The magnitude of velocities anomalies prior to earthquakes. J. Geophys. Res.11, 217-223.

Guéguen, Y., Chelidze, T., and Le Ravalec, M., 1997. Microstructures, percolation thresholds and rock physical properties. Tectonophysics, 279, 23-35.

Simpson, G., Guéguen, Y., and Schneider, F., 2001. Permeability enhancement due to microcrack dilatancy in the damage regime. J. Geophys. Res., 106, 3999-4016.

Guéguen, Y., and Schubnel, A., 2003. Elastic waves velocities and permeability of cracked rocks. .Tectonophysics, 370,1-4, 163-176.

Schubnel, A., and Guéguen, Y., 2003. Dispersion and Anisotropy of Elastic waves in Cracked Rocks. J. Geophys. Res., 108, 2101-2116.

BOOKS :

Guéguen,Y., and Palciauskas, V. 1994. Introduction to the physics of rocks. Princeton Univ. Press, 294p.

Guéguen,Y., and Boutéca, M. , 2004. Mechanics of fluid saturated rocks. Academic Press, 450 p.