Peng, Zhigang
Dear colleagues:
We would like to draw your attention to the session on "Earthquake Triggering/Interaction" at the 36th International Geological Congress in Delhi, India (March 2-8, 2020). Please note that the abstract submission deadline is Sept. 15th for free, and Oct. 15th for 20USD (submission fee). Thank you very much.
https://www.36igc.org/science-program
Under Theme 41 (Quantification of Non-linear Geological Processes)
41.2 Earthquake Triggering/Interaction
Zhigang Peng zpeng<at>gatech.edu (USA) Ian Main (UK) A. R. Bansal (India)
Earthquake interaction and triggering takes place during and after the occurrence of an event. At comparatively short distances, triggered events are known as aftershocks and occur specially around the main shock. However, it is still not clear whether static stress change from permanent fault displacement, quasi-static stress change from post-seismic deformation, or dynamic stress change from passing seismic waves plays the most important role in triggering aftershocks. Transient dynamic stresses carried by large-amplitude surface waves decrease slowly with distance and play a more important role in triggering events at long range. The evidence for dynamic triggering occurring in many parts of the world takes the form of earthquakes and tremors occurring at the time, or soon after, the passage of the surface waves. However, their mechanism is not yet understood. In some cases, foreshocks occur shortly before subsequent large earthquakes in the same region. This can be interpreted as a triggering effect (the smaller triggering the larger) or as a nucleation process (the smaller being part of the preparation process for the larger), sometimes associated with slow slip events inferred from geodetic data. This symposium will discuss the forefront of current research in this rapidly-advancing field.
Keywords: Earthquake triggering, Earthquake nucleation, Foreshocks, Aftershocks, Tectonic Tremor
Zhigang Peng
--
Professor of Geophysics
School of Earth and Atmospheric Sciences
Georgia Institute of Technology
Address: ES&T Building, Rm. 2256
311 Ferst Drive, Atlanta, GA, 30332-0340
Office: 404-894-0231, Lab: 404-385-2050
Fax: 404-894-5638
Email: zpeng<at>gatech.edu<zpeng<at>gatech.edu>
Web: http://geophysics.eas.gatech.edu/people/zpeng
We would like to draw your attention to the session on "Earthquake Triggering/Interaction" at the 36th International Geological Congress in Delhi, India (March 2-8, 2020). Please note that the abstract submission deadline is Sept. 15th for free, and Oct. 15th for 20USD (submission fee). Thank you very much.
https://www.36igc.org/science-program
Under Theme 41 (Quantification of Non-linear Geological Processes)
41.2 Earthquake Triggering/Interaction
Zhigang Peng zpeng<at>gatech.edu (USA) Ian Main (UK) A. R. Bansal (India)
Earthquake interaction and triggering takes place during and after the occurrence of an event. At comparatively short distances, triggered events are known as aftershocks and occur specially around the main shock. However, it is still not clear whether static stress change from permanent fault displacement, quasi-static stress change from post-seismic deformation, or dynamic stress change from passing seismic waves plays the most important role in triggering aftershocks. Transient dynamic stresses carried by large-amplitude surface waves decrease slowly with distance and play a more important role in triggering events at long range. The evidence for dynamic triggering occurring in many parts of the world takes the form of earthquakes and tremors occurring at the time, or soon after, the passage of the surface waves. However, their mechanism is not yet understood. In some cases, foreshocks occur shortly before subsequent large earthquakes in the same region. This can be interpreted as a triggering effect (the smaller triggering the larger) or as a nucleation process (the smaller being part of the preparation process for the larger), sometimes associated with slow slip events inferred from geodetic data. This symposium will discuss the forefront of current research in this rapidly-advancing field.
Keywords: Earthquake triggering, Earthquake nucleation, Foreshocks, Aftershocks, Tectonic Tremor
Zhigang Peng
--
Professor of Geophysics
School of Earth and Atmospheric Sciences
Georgia Institute of Technology
Address: ES&T Building, Rm. 2256
311 Ferst Drive, Atlanta, GA, 30332-0340
Office: 404-894-0231, Lab: 404-385-2050
Fax: 404-894-5638
Email: zpeng<at>gatech.edu<zpeng<at>gatech.edu>
Web: http://geophysics.eas.gatech.edu/people/zpeng
