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DTSTAMP:20190719T085744Z
LOCATION:HG E 1.2
DTSTART;TZID=Europe/Stockholm:20190613T121500
DTEND;TZID=Europe/Stockholm:20190613T124500
UID:submissions.pasc-conference.org_PASC19_sess143_msa306@linklings.com
SUMMARY:Coupled Multi-Physics Earthquake Scenarios: from Long-Term Tectoni
 cs to Rupture Dynamics to Tsunami Simulations
DESCRIPTION:Minisymposium\nSolid Earth Dynamics\n\nCoupled Multi-Physics E
 arthquake Scenarios: from Long-Term Tectonics to Rupture Dynamics to Tsuna
 mi Simulations\n\nGabriel, Ulrich, Madden, Duru, Uphoff\n\nEarthquakes are
  highly non-linear multiscale problems, encapsulating the geometry and rhe
 ology of propagating shear fractures that render the Earth’s crust a
 nd emanate destructive seismic waves. Using physics-based earthquake scena
 rios, modern numerical methods and hardware specific optimizations sheds l
 ight on the dynamics, and severity, of earthquake behaviour. The open-sour
 ce software packages SeisSol (www.seissol.org) and ExaHyPE (www.exahype.eu
 ) can couple seismic wave propagation of high-order accuracy in space and 
 time (minimal dispersion errors) with frictional fault failure. SeisSol ex
 ploits unstructured tetrahedral meshes to account for complex geometries, 
 e.g. high resolution topography and bathymetry, 3D subsurface structure, a
 nd complex fault networks. Exahype utilizes novel geometric transformation
 s and multi-physics by diffuse interfaces on adaptive cartesian meshes, th
 us avoiding manual meshing. Initialising such models self-consistently is 
 challenging. I will present coupled frameworks such as developed in the AS
 CETE project (www.ascete.de) connecting subduction dynamics over millions 
 of years, seismic cycling and earthquake dynamics down to fractions of a s
 econd, as well as tsunami propagation and inundation. Such coupling is dem
 onstrated for generic subduction models (van Zelst et al.'19, 10.3122
 3/osf.io/f6ng5) as well as a scenario of the 2018, Mw 7.5 Sulawesi, I
 ndonesia earthquake which was followed by an unexpected localized tsunami 
 (Ulrich et al.'19, 10.31223/osf.io/3bwqa).
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