Fluid pressure diffusion along a strike-slip faultFig. Fluid pressure diffusion along a strike-slip fault

The HYDROSEIS project is supported by the main French Research Funding Agency ANR over the period 2014-2018. Six young scientists - F. Cappa (PI), L. De Barros, L. Stehly, A. Sladen, M.L. Doan, E. Larose - and international experts and collaborators - Y. Guglielmi (CEREGE), S. Garambois (ISTerre), J. Rutqvist (LBNL), C. Bean (UCD), R. Viesca (TUFTS), J.P. Avouac (CALTECH), J.P. Ampuero (CALTECH) - are involved in the project.

The main objective is to improve our understanding of the role of fluids on the rupture of earthquake faults. To date, few data are available to study the couplings between fluids, fault slip and seismicity. In this project, we propose to develop a new in-situ approach based on the hydraulic stimulation of a small fault segment (10 m) under controlled experimental conditions.

The fluid injections will produce small fault slip (few millimeters) and will be monitored with a dense network of sensors, including pressuremeters, strainmeters, seismometers and electrical imaging. This original experiment will be conduct at 300 m-depth at the Low Noise Underground Laboratory of Rustrel in France.

BEGINNING on March 2014
DURATION 48 months


Video: Seismicity and aseismic slip induced by fluid injection directly in a fault


Videos: Fluid pressure diffusion and associated slip along two crustal faults