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DTSTAMP:20190719T085744Z
LOCATION:HG E 1.2
DTSTART;TZID=Europe/Stockholm:20190613T114500
DTEND;TZID=Europe/Stockholm:20190613T121500
UID:submissions.pasc-conference.org_PASC19_sess143_msa248@linklings.com
SUMMARY:Monitoring and Forecasting Methods for Crustal Activity in Subduct
 ion Zones with 3D Heterogeneous Medium using Large-Scale High-Fidelity Fin
 ite Element Simulations
DESCRIPTION:Minisymposium\nSolid Earth Dynamics\n\nMonitoring and Forecast
 ing Methods for Crustal Activity in Subduction Zones with 3D Heterogeneous
  Medium using Large-Scale High-Fidelity Finite Element Simulations\n\nHori
 , Ichimura, Fujita, Yamaguchi, Agata...\n\nTo analyze crustal activity in 
 the Earth's interior, such as spatio-temporal variation in slip velocity o
 n the plate interface including ordinary and slow earthquakes, we need to 
 use the data observed mostly on the Earth's surface. It is becoming intrin
 sic to consider 3D heterogeneous structure of the interior, especially in 
 subduction zone, since we can obtain dense surface deformation data both o
 n land and on the sea floor. Thus, to fully utilize such fruitful data, it
  is necessary to develop physics-based data analysis methods including (1)
  a structural model with the 3D geometry of the plate interface and the ma
 terial property such as elasticity and viscosity, (2) calculation codes fo
 r crustal deformation and seismic wave propagation using (1), (3) inverse 
 analysis or data assimilation codes both for structure and fault slip usin
 g (1) and (2). To accomplish this, we have developed reliable large-scale 
 simulation codes to calculate viscoelastic crustal deformation and elastic
  wave propagation for high-fidelity 3D heterogeneous structure with automa
 tic mesh generator, implemented on the GPU clusters with considering uncer
 tainty in structural models. Furthermore, we are developing the data assim
 ilation method for monitoring and forecasting the slip velocity variation 
 on the plate interface with 3D heterogeneous structure.
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