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DTSTAMP:20210916T132449Z
LOCATION:Louis Favre
DTSTART;TZID=Europe/Stockholm:20210706T123000
DTEND;TZID=Europe/Stockholm:20210706T130000
UID:submissions.pasc-conference.org_PASC21_sess118_msa378@linklings.com
SUMMARY:Exploring Earth’s Mantle and Outer Core with High-Performance Simu
 lations of 3D Wave Propagation
DESCRIPTION:Minisymposium\n\nExploring Earth’s Mantle and Outer Core with 
 High-Performance Simulations of 3D Wave Propagation\n\nBozdag, Orsvuran, C
 reasy, Peter\n\nOur goal is to improve our understanding of Earth’s 
 interior based on full-waveform inversion and 3D seismic wave simulations 
 by avoiding commonly used approximations to the wave equation and correcti
 ons applied in classical seismic tomography. After the first-generation gl
 obal adjoint waveform models GLAD-M15 (Bozdag et al. 2016) and GLAD-M25 (L
 ei et al. 2020), which are transversely isotropic in the upper mantle, we 
 demonstrate new parameterizations in global full-waveform inversion by add
 ressing surface-wave azimuthal anisotropy in the upper mantle and define s
 trategies to simultaneously invert elastic and anelastic mantle models.&nb
 sp; We investigate the effect of 3D mantle and crustal structure on the me
 asurements of outer-core SmKS phases to ultimately improve the outer core 
 structure by taking the full complexity of wave propagation with 3D wave s
 imulations. For the global adjoint inversions and investigation of the out
 er core, we routinely run numerical simulations with the SPECFEM3D_GLOBE p
 ackage (Komatitsch & Tromp 2002) with resolutions down to 17 s and 9 s
 , respectively, on UT Austin’s Frontera and TACC XSEDE’s Stamp
 ede2 systems.\n\nDomain: CS and Math, Solid Earth Dynamics
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