J.R.Grasso

Jean Robert Grasso

Born at Vif, France.

E-mail: Jean-Robert.Grasso@ujf-grenoble.fr

Education

Doctorat es Sciences, University of Grenoble,(1993)

PhD, in Geophysics, University of Grenoble, (1981)

Ingenieur Ecole Nationale des Arts et Metiers, Paris, (1977)

Position helds

2006-present Physicien du Globe, ISTerre, Observatoire de Grenoble, France

2004-2005 Visiting scholar, Seismology and Volcanic Hazard group, USGS Menlo Park CA, USA

2002-2003 Visiting scholar, Institute of Geophysics and Planetary Physics, UCLA, USA

1994-2001 Physicien du Globe, LGIT, Observatoire de Grenoble, France

1992-1994 Director of the Piton de la Fournaise Volcano Observatory, Reunion Island

1983-1992 Associate Professor, Dept of Mechanics, University of Grenoble, France

1982-1983 Research Fellow Elf-Aquitaine, Pau, France

Scientific contributions

Failures and instabilities of the fragile Earth (Earthquake, Volcano eruption, landslide, snow avalanche)

80 publications in peer reviewed international journals.

Selected thematic publications

Earthquake

- Tahir, M., J.-R. Grasso, and D. Amorèse,(2012) The largest aftershock: How strong, how far away, how delayed? Geophys. Res. Lett., 39, L04301, doi:10.1029/2011GL050604

- Amorese, D., Grasso J-R and P. Rydelek, (2009) On varying b values with depth: results from computer-intensive tests for Southern California”, Geophysical Journal International, Vol. 180, No. 1, pp. 347-360.

- Voisin, C., J.-R. Grasso, E. Larose and F. Renard (2008), Evolution of seismic signals and slip papttern along subduction zones : Insights from a friction lab scale, Geophys. Res. Lett., 35, L08302, doi:10.1029/2008GL033356.

- Helmstetter A., D. Sornette and J-R Grasso (2003), Mainshocks are aftershocks of conditional foreshocks: how do foreshock statistical properties emerge from aftershock laws, Journ. Geophys. Res..

Volcano

- Schmid A. and J.-R. Grasso (2012) Omori law for eruption foreshocks and aftershocks, revised JGR

- Traversa, P. & Grasso, J. R. (2010). How is Volcano Seismicity Different from Tectonic Seismicity? Bulletin of the Seismological Society of America 100(4), 1755-1769.

- Lemarchand, N., and J.-R. Grasso (2007), Interactions between earthquakes and volcano activity, Geophys. Res. Lett., 34, L24303, doi:10.1029/2007GL031438.

- Grasso J-R and I Zaliapin,  (2004) Predictability of voclanic Eruption: lessons from basaltic volcanoes, Geophys. Res. Letts.

Landslide

- Lacroix, P.; Grasso, J.-R.; Roulle, J.; Giraud, G.; Goetz, D.; Morin, S.; Helmstetter, A. (2012), Monitoring of snow avalanches using a seismic array: Location, speed estimation, and relationships to meteorological variables J. Geophys. Res., Vol. 117, No. F1, F01034 http://dx.doi.org/10.1029/2011JF002106

- Tatard Lucille, Jean-Robert Grasso, Agnes Helmstetter Stephane Garambois, (2010) Characterization and comparison of landslide dynamics in different tectonic and climatic settings, J. Geophys. Res., Vol. 115, No. F4, F04040

- Amitrano, D, Grasso , JR, and G Senfaute, 2005, Seismic precursory pattern before a cliff collapse and critical point phenomena, Geophys. Res. Lettrs, 32, L08314, doi: 10.1029/2004GL022270

- Faillettaz, J. Louchet F. and JR Grasso, 2004 A Two-Threshold model for Scaling laws of Non-Interacting Snow avalanches Phys. Rev. Lettrs, 208001.

- Helmstetter A., Sornette D., Grasso J.-R., Andersen J., Gluzman S. And V. Pisarenko. A slider block model for landslides: applications to vaiont and La clapiere landslides, Journ. Geophys. Res, 2004.

-  Dussauge, C., JR Grasso, and A Helmstetter, (2003), Statistical analysis of rock fall volumes: implications for rock fall dynamics,  J. Geophys. Res. 108, No. B6, 2286 10.1029/2001JB000650.

Current collaborative programs

- French ANR program for Natural Hazards: SLAMS (landslide) (2010-2013), UNDERVOLC (volcano)  (2009-2011)

- European projects: Volcalert (2001-2003), E-ruption (2001-2004),Trigs (2006-2009) Volume (2007_2010)