[unav_all] IRIS WEBINAR - Seismic Constraints on the Subduction Factory - 9/10 2 PM Eastern

Andy Frassetto andyf at iris.edu
Wed Sep 3 12:57:04 MDT 2014


*Back from our summer hiatus...

"Seismic Constraints on the Subduction Factory: from Global to Local 
Scales" will be presented at 2 pm EDT (6 pm UTC) on Wednesday, 9/10. *

Please registerif you intend to participate in the webinar live: 
https://www2.gotomeeting.com/register/823333906

You will be emailed a confirmation containing a link for watching the 
live broadcast. Afterwards, IRIS will post the webinar here: 
https://www.youtube.com/playlist?list=PLD4D607C2FA317E6D.

Presenter: Dr. Ellen Syracuse (Post-doctoral Fellow, Los Alamos National 
Laboratory)

Abstract: Subduction zones are a major expression of tectonics and cause 
of volcanism on Earth, with a linear extent of approximately 40,000 km 
at the surface. Their study brings together a variety of disciplines 
within the geosciences, including seismology, geodynamics, geochemistry, 
and mineral physics. This cross-discipline study is particularly 
important, and exciting, when understanding the subarc regions of 
subduction zones, due to the complexity of processes involved in 
seismogenesis and melt generation. In this talk, I will focus on a small 
subset of the many seismic tools that are used to study subduction 
zones, specifically earthquake relocation and velocity tomography. For 
example, at the global scale, seismicity can be used to constrain the 
geometries and consequently the geodynamics and mineralogies of 
subduction zones, helping us understand the features common to all 
subduction systems. At a local scale, I focus on Central America, where 
tomographic studies can provide insight to temperature and fluid 
distributions and their along-arc variations, linking the inputs to the 
outputs of subduction zones.

System Requirements
PC-based attendees: Windows® 8, 7, Vista, XP or 2003 Server
Mac®-based attendees: Mac OS® X 10.6 or newer
Mobile attendees: iPhone®, iPad®, Android^(TM) phone or Android tablet
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