Michel Campillo is a French seismologist and geophysicist who is currently a professor at Grenoble Alpes University.
Early life and education Michel Campillo was born in 1957 in Chambon sur Lignon. He studied physics at university, receiving a Master's degree in 1979.
Postgraduate thesis: Calculation of near-field radiation from a dynamic seismic source. Thèse d'État: Synthetic seismograms in heterogeneous elastic media: methodological development and applications. Specialising in geophysics, Campillo subsequently obtained his PhD in 1982 and his Doctorat d'État in 1986 at Joseph Fourier University under the direction of Michel Bouchon.
Career Campillo started his career as a research associate at the CNRS in 1983. In 1989, he became a professor at Joseph Fourier University (today part of Grenoble Alpes University) at the Laboratory of Internal Geophysics and Tectonophysics (now the Institute of Earth Sciences). From 1997 to 2002, he directed the laboratory and from 2004 to 2012, he was the head of its "Ondes et Structures" research group. He currently holds the chair "Artificial intelligence for natural hazard and geo-resources" together with Olivier Michel (a professor at Grenoble INP) at the Interdisciplinary Institute of Artificial Intelligence in Grenoble. He spent several periods at the University of Southern California, the University of California Santa Barbara, the Massachusetts Institute of Technology and the GeoForschungsZentrum-Potsdam. He is a member of the French Academy of Sciences and of the Institut Universitaire de France.
Scientific work
Scientific activities Michel Campillo is a seismologist. He is therefore interested in both the processes responsible for earthquakes and the seismic waves that reveal the structure of the Earth. He has studied major earthquakes but also the phenomena of transient deformation that have been highlighted in recent years. He has proposed innovative methods for imaging the Earth from ambient seismic noise and multiply scattered waves. His current work focuses on the temporal monitoring of the mechanical properties of rocks associated with tectonic deformation. He has worked in interdisciplinary and international collaborations and very closely with students and post-docs with whom he has published more than 200 papers. His initial work concerned the modelling of seismic radiation from dynamic cracks and then the imaging of the fracture process of large earthquakes through the inversion in the spectral domain of local seismic and geodetic data. He then analysed the slip initiation phase, characterised the stable/unstable transition in complex geometries and introduced the concept of effective friction of a heterogeneous fault. More recently he has been interested in slow earthquakes and in particular in their intermittent nature. Michel Campillo has studied wave propagation through data analysis and numerical simulation, in particular with integral equation methods and applications to seismic risk. This work has shown the importance of the multiple scattering regime of seismic waves, which has led to considering these waves from the perspective of mesoscopic physics. This led to the reconstruction of the Earth's response between two distant points using continuous recordings of ambient noise. This passive approach produced 3D tomographic images of unprecedented resolution and opened the way to the temporal monitoring of long-term mechanical properties. He is now studying the small changes associated with tectonic deformations in fault zones and the accompanying microseismicity.
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