[unav_all] AGU session T021 call for abstracts: "From the seismic cycle to geological time scales, how do subduction processes that can possibly modify the megathrust geometry and mechanical properties control the tectonic evolution and deformation of active margins, and the subduction seismic behavior?"

Fred Taylor fwileytaylor56 at gmail.com
Mon Jul 27 12:05:19 MDT 2015


Dear Colleagues,

We would like to bring your attention to a session organised during this year's AGU Fall Meeting (14 to 18 December, 2015) and titled: 

"T021: From the seismic cycle to geological time scales, how do subduction processes that can possibly modify the megathrust geometry and mechanical properties control the tectonic evolution and deformation of active margins, and the subduction seismic behavior?".

This session addresses the deformation of upper-plates at different temporal scales and what these observations can tell us about subduction processes as well as the seismic behavior of megathrusts. This session aims to gather contributions from different fields of Earth Sciences (geology, geodesy, geophysics, modelling…).

Confirmed invited speakers are: Prof. Jean-Philippe Avouac from Cambridge, Dr. Belle Philibosian from Columbia University and Kausthub Thirumalai from University of Texas at Austin. 

The abstract submission deadline is  5 August 2015, 11:59 P.M. EDT. To submit an abstract to our session, please visit this webpage: https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session7866 <https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session7866>

Do not hesitate to share this session with colleagues,
Best regards,

Frédérique Leclerc (Earth Observatory of Singapore, Nanyang Technological University, Singapore)
Frederick W. Taylor (Institute for Geophysics, University of Texas at Austin, USA)
Nathalie Feuillet (Institut de Physique du Globe de Paris, France)
Luc Lavier (Institute for Geophysics, University of Texas at Austin, USA)

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Session ID#: 7866
Session Description:
A fundamental feature of overriding plates is that on 100  to 107yr time-scales, they deform both abruptly and dramatically or slowly and subtly in response to an array of distinct subduction processes, among which are earthquake cycles, subducting ridges, and erosion/accretion. Over short time-scales, the pattern of upper-plate vertical deformation is dominated by subduction seismic cycles controlled by the megathrust structure and mechanical properties. Over longer time-scales, upper-plates present various vertical deformation patterns, which can be transient, vary along-strike, reflect long lasting elastic behavior (no permanent deformation) or not (building of permanent topography). Consequently, observations of long-term vertical deformation offer clues to investigate the structure, properties and processes enveloping the interplate thrust zone and their significance regarding subduction seismic behavior. This session welcomes insights focusing on active deformation at convergent margins through observations and modeling that seek to integrate the different time-scales to comprehend the factors controlling subduction zone behavior.




	
 
 
LECLERC Frédérique | Postdoctoral Research Fellow, Climate and Tectonics Groups | Earth Observatory of Singapore | Nanyang Technological University
N2-01A-14, 50 Nanyang Avenue, Singapore 639798
Tel: (65) 6592-1827 GMT+8h | Fax: (65) 6790-1585 | Email: fleclerc at ntu.edu.sg <mailto:fleclerc at ntu.edu.sg> | Web: www.earthobservatory.sg <http://www.earthobservatory.sg/>   http://frederiqueleclerc.weebly.com/ <http://frederiqueleclerc.weebly.com/>

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