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AOGS2017 Workshop: Physical Modeling of GPS and InSAR Data with Unicycle

Date: 06/05/2017

On Behalf of Sylvain Barbot, Nanyan Technological University:

Workshop: Physical Modeling of GPS and InSAR Data with Unicycle

Organizers: Sylvain Barbot, James D P Moore, Sagar Masuti, and Dongju Peng
When: 09 Aug 2017
Where: Singapore, AOGS conference
Registration: http://asiaoceania.org/aogs2017/public.asp?page=edu_outreach.htm#wsp

About the event:
Several decades of space geodetic monitoring has brought a wealth of
data documenting the cycle of strain accumulation and release around
plate boundaries. The short-term tectonic deformation is well
understood in terms of the activation of fault slip, viscoelastic flow
in the lower crust and mantle and the diffusion of pore fluids. In
this hands-on workshop, we will describe how to build physical models
of plate boundaries strain evolution. We will describe from the ground
up how to simulate postseismic deformation data, in particular, GPS
and InSAR data. We will describe several cases of interest including
the 2012 Mw 8.6 Indian Ocean earthquake, the 2015 Mw 7.8 Gorkha, Nepal
earthquake and the 2009 Mw 7.8 Dusky Sound, New Zealand earthquake. We
will first recall the main rheological assumptions: How does friction
govern fault slip? How do creep mechanisms control viscoelastic flow?
We will show how to simulate geodetic time series based on physical
assumptions about stress release mechanisms. Finally, we will describe
how to create numerical simulations of earthquake cycles. We will
describe the basic characteristics of fault friction that allow
earthquake ruptures to occur spontaneously. The workshop will be
designed for geologists, and geodesists interested in earthquake
mechanics who have limited experience in physics and programming. The
simulations will be carried out in Matlab using the Unicycle software.