Locating rockfalls using inter-station ratios of seismic energy at Dolomieu crater, Piton de la Fournaise volcano

Julian Kuehnert (1) , Anne Mangeney (1) , Yann Capdeville (2) , Jean-Pierre Vilotte (1) , Eleonore Stutzmann (1) , Emmanuel Chaljub (3) , El-Madani Aissaoui (1) , Patrice Boissier (1) , Christophe Brunet (1) , Philippe Kowalski (1) , Frédéric Lauret (1)

1 IPGP (UMR_7154) - Institut de Physique du Globe de Paris
2 LPG - Laboratoire de Planétologie et Géodynamique [UMR 6112]
3 ISTerre - Institut des Sciences de la Terre

• Rockfalls are located using generated seismic signals at high frequencies for highly resolved spatial and temporal tracking • Rockfall location is improved using the signature of surface topography on seismic signals simulated with the 3D Spectral Element Method • By accounting for topography, all signal components can be used, critical in the case of sparse station networks or noise

Domaines: Géophysique [physics.geo-ph]

Julian Kuehnert, Anne Mangeney, Yann Capdeville, Jean-Pierre Vilotte, Eleonore Stutzmann, et al.. Locating rockfalls using inter-station ratios of seismic energy at Dolomieu crater, Piton de la Fournaise volcano. Journal of Geophysical Research: Earth Surface, 2021, 126 (4), ⟨10.1002/essoar.10503303.3⟩. ⟨hal-03411343⟩