[IGSMAIL-5639]: G12 Plate Motion and How It Is Taken Up in Deforming Zones

[Jeff Freymueller]

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IGS Electronic Mail      04 Sep 14:28:43 PDT 2007      Message Number 5639
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Author: Jeff Freymueller

We wish to call your attention to the following Fall 2007 AGU special
session, which may be of interest to many in the IGS community:


G12 Plate Motion and How It Is Taken Up in Deforming Zones

We seek geodetic and geologic studies on plate motion, microplate
motion, and how they relate to structural elements in the deforming
zones between the platesfaults, great earthquakes and seismicity,
and mountains and rifts reflecting active deformation.  We seek also
studies investigating the following questions:  How uncertain are
estimates of plate motion?  How well do geodetic and geologic
estimates of plate motion agree, and are differences due to changing
plate motion?  To what degree can elastic strain that is going to be
released in an earthquake be distinguished from permanent deformation
that is becoming part of the geologic record?  Where are deforming
belts better described by microplates or where are they better
described by a continuum?  Where are the limits of the plate
interiors?  How are the plate interiors deforming in viscous response
to unloading of the late Pleistocene ice sheets, and how are the
plates deforming in elastic response to current ice sheet changes?
How do SLR, VLBI, GPS, and DORIS estimates of plate motion
depend on assumptions about Earths reference frame?

Sincerely,
Donald F. Argus
Jeff Freymueller