S009
Earthquake Foreshocks: From Laboratory to Megathrust Scale
Session ID#: 82374
Session Description:
As one of the most concrete and well-documented examples of precursory activity, foreshocks have remained at the forefront of seismology research for over a century. Improved seismic and geodetic network coverage and instrument quality, new laboratory sensors and techniques, and advanced data processing and computational methods have yielded significantly more observational earthquake data over the last decade at a variety of scales from laboratory microearthquakes to devastating megathrust events. On all scales and in a variety of tectonic settings, foreshocks are being observed and catalogued in great detail. In this session we aim to bring together scientists from any discipline working on, or interested in, earthquake foreshock occurrence and driving mechanisms. We invite observational, experimental, and theoretical studies at all scales. We also encourage submissions from colleagues working on advanced detection and analysis techniques for improved foreshock identification in an operational setting.
Co-Sponsor(s):
Index Terms:
7215 Earthquake source observations [SEISMOLOGY]
7223 Earthquake interaction, forecasting, and prediction [SEISMOLOGY]
7230 Seismicity and tectonics [SEISMOLOGY]
8123 Dynamics: seismotectonics [TECTONOPHYSICS]
Primary Convener: Christine J Ruhl, University of Tulsa, Department of Geosciences, Tulsa, OK, United States
Conveners: Toni Kraft, ETH Zurich, Zurich, Switzerland and Aitaro Kato, University of Tokyo, Bunkyo-ku, Japan
Primary Liaison: Christine J Ruhl, University of Tulsa, Department of Geosciences, Tulsa, OK, United States
The pre-seismic phase of the 2017 Valparaiso Mw 6.9 earthquake : assessment of aseismic to seismic partitioning with reliable uncertainty estimates (522690)
Emmanuel Caballero1, Agnès Chounet2, Zacharie Duputel3, Jorge Jara4 and Romain Jolivet4, (1)Institut de Physique du Globe Strasbourg, UMR 7516, Université de Strasbourg/EOST, Strasbourg Cedex, France, (2)Institut de Physique du Globe de Strasbourg, UMR 7516, Université de Strasbourg/EOST, CNRS, Strasbourg, France, (3)California Institute of Technology, Pasadena, United States, (4)Ecole Normale Supérieure Paris, Département de Géosciences, Paris, France
Foreshocks and Mainshock Nucleation of the 1999 Mw 7.1 Hector Mine, California, Earthquake (528949)
Clara E Yoon, Stanford University, Geophysics, Stanford, CA, United States; USGS Pasadena Field Office, Earthquake Science Center, Pasadena, CA, United States, Nana Yoshimitsu, University of Tokyo, Bunkyo-ku, Japan, William L Ellsworth, Stanford University, Stanford, CA, United States and Gregory C Beroza, Stanford University, Department of Geophysics, Stanford, CA, United States
Source Spectra Variability of earthquakes preceding the 2011 Mw 9.0 Tohoku-Oki megathrust (555806)
Jesus Pina Valdes1, Anne Socquet1, Hugo Samuel Sanchez Reyes2, Fabrice Cotton3 and David Marsan1, (1)ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, (2)University Joseph Fourier Grenoble, Grenboble, France, (3)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
High-Resolution Imaging of Foreshock Patterns in Microearthquake Sequences in Switzerland (583252)
Verena Simon1, Toni Kraft1, Tobias Diehl1, Thessa Tormann1,2, Marcus Herrmann1 and Stefan Wiemer1, (1)Swiss Seismological Service @ ETH Zurich, Zurich, Switzerland, (2)PartnerRe, Zurich, Switzerland
How does laboratory earthquake prediction transfer to real earthquakes? (584154)
Brennan Brunsvik, University of Louisiana at Lafayette, Geosciences, Lafayette, LA, United States; University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, Taylor Privat, University of Louisiana at Lafayette, Lafayette, LA, United States, Gabriele Morra, University of Louisiana at Lafayette, Department of Physics and School of Geosciences, Lafayette, LA, United States and David A Yuen, Univ of Minnesota, Minneapolis, MN, United States; Columbia University, Dept. of Applied Physics and Applied Mathematics, New York, NY, United States
Rupture Directivity of Foreshocks Show Rapid Migration around Patches on a Complex Fault during the 2008 Mogul, NV Earthquake Sequence (619160)
Christine J Ruhl, University of Tulsa, Department of Geosciences, Tulsa, OK, United States, Rachel E Abercrombie, Boston University, Boston, MA, United States and Kenneth D Smith, University of Nevada Reno, Reno, NV, United States
