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DTSTAMP:20210916T132528Z
LOCATION:Louis Favre
DTSTART;TZID=Europe/Stockholm:20210706T110000
DTEND;TZID=Europe/Stockholm:20210706T130000
UID:submissions.pasc-conference.org_PASC21_sess118@linklings.com
SUMMARY:Advances in Computational Geosciences, Part II
DESCRIPTION:Minisymposium\n\nComputational geosciences leverage advanced c
 omputational methods to improve our understanding of the interiors of  Ear
 th and other planets. They combine numerical models to understand the curr
 ent state of physical quantities describing a system, to predict their fut
 ure states, and to infer unknown parameters of those models from data meas
 urements. Such models produce highly nonlinear numerical systems with extr
 emely large numbers of unknowns.\nThe ever-increasing power and availabili
 ty of High Performance Computing (HPC) facilities offers researchers unpre
 cedented opportunities to continually increase both the spatiotemporal res
 olution and the physical complexity of their numerical models. However, th
 is requires complex numerical methods and their implementations that can h
 arness the HPC resources efficiently for problem sizes of billions of degr
 ees of freedom.\nThe goal of this minisymposium is to bring scientists who
  work in theory, numerical methods, algorithms and scientific software eng
 ineering for scalable numerical modelling and inversion. Examples include,
  but are not limited to, geodynamics, multi-phase geophysical flow modelli
 ng, seismic wave propagation and imaging, seismic tomography and inversion
  of large data sets, development of elaborate workflows including HPC for 
 imaging problems, ice-sheet modelling, and urgent computing for natural ha
 zards.\n\nExaSeis: Seismic Wave Propagation and Earthquake Modelling in th
 e ExaHyPE Engine\n\nBader, Rannabauer, Gabriel\n\nExaHyPE is an engine to 
 solve hyperbolic PDE systems using high-order discontinuous Galerkin discr
 etisation with ADER time stepping. In this talk, we present models for sei
 smic wave propagation and earthquake dynamics developed in ExaHyPE. ExaHyP
 E works on tree-structured dynamically adaptive Cartes...\n\n-------------
 --------\nGlobal Seismic Tomography with Millions of Waveforms\n\nTsekhmis
 trenko, Hosseini, Sigloch\n\nSeismic tomography is the main tool for imagi
 ng the Earth's interior. Since the advent of this method, the internal str
 ucture of Earth has been vastly sampled and imaged at a variety of scales.
  Recent advances in seismic data acquisition, methodology and computing po
 wer have drastically progressed t...\n\n---------------------\nExploring E
 arth’s Mantle and Outer Core with High-Performance Simulations of 3D Wave 
 Propagation\n\nBozdag, Orsvuran, Creasy, Peter\n\nOur goal is to improve o
 ur understanding of Earth’s interior based on full-waveform inversio
 n and 3D seismic wave simulations by avoiding commonly used approximations
  to the wave equation and corrections applied in classical seismic tomogra
 phy. After the first-generation global adjoint wavefor...\n\n-------------
 --------\nUsing Supercomputers to Unravel Multi-Physics and Multi-Scale Ea
 rthquake Dynamics and Seismic Wave Propagation with SeisSol\n\nGabriel, Up
 hoff, Ulrich, Krenz, Wolf...\n\nEarthquakes are highly non-linear multisca
 le problems, encapsulating the geometry and rheology of propagating shear 
 fractures that render the Earth’s crust and emanate potentially dest
 ructive seismic waves. Using physics-based earthquake scenarios, modern nu
 merical methods and hardware specifi...\n\n\nDomain: CS and Math, Solid Ea
 rth Dynamics
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