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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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