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Earthquake Physics Group

Sommario
Publicazioni

By means of theoretical and computational modeling, the research in Earthquake Physics Group aimed to cover the entire process of earthquakes: its source, radiation path, and ground motion at the surface. We performed both fundamental research on earthquake rupture dynamic processes and wave propagation and apply it for the development of physics-based models for ground motion prediction, seismic hazard assessment and earthquake engineering applications. Our main goal was to acquire a better understanding in the physics and mechanics of earthquakes. The research topics were: Dynamic rupture at a bi-material interface Earthquake rupture in geometrically complex fault systems Dynamics of off-fault plastic yielding formation and tensile crack propagation during dynamic rupture Development of laboratory-based friction models (slip weakening and rate and state) Limits on extreme ground motion due to strength limits and distributed shearing Difference between surface-rupturing and buried earthquake rupture Geodynamic and earthquake cycles Coupling geodynamic and dynamic earthquake faulting models Wave propagation in complex media Identification of both source- and propagation-dominated ground motion phenomena Source inversion and pseudo-dynamic source models Physics-based broad-band ground motion simulation Development of physics-based Ground Motion Prediction Equation Models (GMPE)
Project Leader al SED	Luis A. Dalguer
Partecipanti del SED	Cyrill Baumann Alice Gabriel Percy Galvez Walter Imperatori Banu Mena Cabrera Seok Goo Song Ylona van Dinther Youbing Zhang
Finanziamento	SNF CSCS, CCES-ETH, SCEC, Volksbankstiftung, 7th Framework Program of the European Commission
Durata	2009-2014
Parole chiavi	Earthquake rupture dynamic, ground motion modeling, numerical simulation, friction models, earthquake cycles.
Settore di ricerca	Physics of earthquake, Earthquake seismology, engineering seismology, High Performance Computing

Galvez, P., Dalguer, L.A., Ampuero, J.P. and Giardini, D. (2016). Slip reactivation during the 2011 Mw 9.0 Tohoku earthquake: Dynamic rupture and ground motion simulations. Bull. Seismol. Soc. Am., In press.

Zhang, Y., Dalguer, L.A., Song, S.G., Clinton, J. and Giardini, D. (2015). Evaluating the effect of network density and geometric distribution on kinematic source inversion models. Geophys. J. Int. 200, 1-6. doi: 10.1093/gji/ggu252

Herrendoerfer, R., van Dinther, Y., Gerya, T.V. and Dalguer, L.A. (2015). Seismogenic zone downdip width controls supercycles at subduction thrusts. Nature Geoscience 8, 471–474. doi: 10.1038/ngeo2427

Galvez, P., Ampuero, J.P., Dalguer, L.A., Somala, S.N. and Nissen-Meyer, T. (2014). Dynamic earthquake rupture modeled with an unstructured 3D spectral element method applied to the 2011 M9 Toholu earthquake. Geophys. J. Int. 198, 1222–1240. doi: 10.1093/gji/ggu203

Baumann, C. and Dalguer, L.A. (2014). Evaluating the Compatibility of Dynamic-Rupture-Based Synthetic Ground Motion with Empirical GMPE. Bull. Seismol. Soc. Am. 104(2). doi: 10.1785/0120130077

van Dinther, Y., Gerya, T.V., Dalguer, L.A. and Mai, P.M. (2014). Modeling the seismic cycle in subduction zones: the role and spatiotemporal occurrence of off-megathrust earthquakes. Geophysical Research Letters 41(4), 1194–1201.

Song, S.G., Dalguer, L.A. and Mai, P.M. (2013). Pseudo-dynamic source modeling with 1-point and 2-point statistics of earthquake source parameters. Geophys. J. Int. 196(3), 1770-1786. doi: 10.1093/gji/ggt479

Causse, M., Dalguer, L. A. and Mai, P.M. (2013). Variability of Dynamic Source Parameters Inferred from Kinematic Models of Past Earthquakes. Geophys. J. Int. 196(3), 1754-1769. doi: 10.1093/gji/ggt478

van Dinther, Y., Gerya, T.V., Dalguer, L.A., Mai, P.M., Morra, G. and Giardini, D. (2013). The seismic cycle at subduction thrusts: insights from seismo-thermo-mechanical models. J. Geophys. Res. Solid Earth 118(12), 6183–6202. doi: 10.1002/2013JB010380

Baumann, C., Burjanek, J., Michel, C., Haeh, D. and Dalguer, L.A. (2013). Fault zone signatures from ambient vibration measurements: a case study in the region of Visp (Valais, Switzerland). Swiss J. Geosci. 106, 529-541. doi: 10.1007/s00015-013-0155-3

Gabriel, A.A., Ampuero, J.P., Dalguer, L.A. and Mai, P.M. (2013). Source Properties of Dynamic Rupture Pulses with Off-Fault Plasticity. J. Geophys. Res. 118(8), 4117–4126. doi: 10.1002/jgrb.50213

Song, S.G. and Dalguer, L.A. (2013). Importance of 1-point statistics in earthquake source modeling for ground motion simulation. Geophys. J. Int. 192(3), 1255-1270. doi: 10.1093/gji/ggs089

van Dinther, Y, Gerya, T.V., Dalguer, L. A., Corbi, F., Funiciello, F. and Mai, P.M. (2013). The seismic cycle at subduction thrusts: 2. Dynamic implications of geodynamic simulations benchmarked with laboratory models. J. Geophys. Res. 118(4), 1502–1525. doi: 10.1029/2012JB009479

Mikhailov, V., Lyakhovsky, V., Panet, I., van Dinther, Y., Diament, M., Gerya, T.V., deViron, O. and Timoshkina, E. (2013). Numerical modelling of post-seismic rupture propagation after the Sumatra 26.12.2004 earthquake constrained by GRACE gravity data. Geophysical Journal International 194(2), 640-650. doi: 10.1093/gji/ggt145

Corbi, F., Funiciello, F., Moroni, M., van Dinther, Y., Mai, P.M., Dalguer, L.A. and Faccenna, C. (2012). The seismic cycle at subduction thrusts: 1. insights from laboratory models. J. Geophys. Res. 118(4), 1483–1501. doi: 10.1029/2012JB009481