BEGIN:VCALENDAR VERSION:2.0 PRODID:Linklings LLC BEGIN:VTIMEZONE TZID:Europe/Stockholm X-LIC-LOCATION:Europe/Stockholm BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20220812T074357Z LOCATION:Singapore Room DTSTART;TZID=Europe/Stockholm:20220627T160000 DTEND;TZID=Europe/Stockholm:20220627T180000 UID:submissions.pasc-conference.org_PASC22_sess147@linklings.com SUMMARY:MS2D - Looking into the Earth: Modelling, Inversion and Uncertaint y Quantification in Computational Geophysics (Part I) DESCRIPTION:Minisymposium\n\nThe central goal of computational geophysics is to infer physical properties of the Earth's interior, inaccessible for direct measurements (such as density or wave velocity), from data typicall y acquired near the surface with appropriate instruments. Inversion techni ques are applied to infer unknown parameters of a mathematical model to fi t the observed data. The resulting model provides a view of the current ph ysical state and can be used to simulate previous and future states. Such models lead to complicated nonlinear numerical systems, which are usually too large for standard computers. Luckily, HPC facilities' ever-increasing power allows continuous model resolution and complexity growth. Neverthel ess, harnessing this power brings new challenges for implementations. Desp ite the success of deterministic inversion methods, nonuniqueness and nonl inearity of the inverse problems can reduce the meaningfulness of the solu tions. Bayesian inference represents an attractive tool to overcome these issues and provide uncertainty quantification. However, it brings another level of complexity that needs to be re-assessed in light of the recent ad vances in methodology and technologies. This three-sessions minisymposium aims to bring together scientists engaged in theory, numerical methods, al gorithms, and scientific software engineering for scalable numerical model ling, inversion and uncertainty quantification in computational geophysics .\n\nExtreme-Scale Multiphysics Simulations for Induced Earthquakes\n\nWol f, Gabriel, Bader\n\nWe present recent developments to the open-source ear thquake simulation software Seis-
Sol targeted towards the simulatio n of induced earthquakes. Induced earthquakes, e.g.
in the context o f geothermal energy production, pose a major threat to the successful
usage of this technolog...\n\n---------------------\nSupercomputing of E arthquakes and the Seismic Cycle\n\nGabriel, Uphoff, May, Schliwa\n\nEarth quake rupture dynamics and seismic shaking simulations routinely utilize l arge supercomputers. Yet, simulations of the seismic cycle - sequences of earthquakes and aseismic slip - are challenging and have not been extensiv ely developed for HPC environments. I will first summarize recent advance. ..\n\n---------------------\nSeismoelectric Effects for Subsurface Charact erization\n\nMorency, Matzel\n\nClassical approaches for Earth subsurface imaging rely predominantly on seismic techniques, which alone do not direc tly capture fluid-specific properties. On the other hand, electromagnetic (EM) measurements add constraints on the fluid phase through, for example, electrical conductivity. However, E...\n\n---------------------\nAdjoint Waveform Tomography with Salvus: Application to Continental- and Reservoir -Scale Seismic Structure\n\nRodgers, Morency, Krischer, Afanasiev, Boehm.. .\n\nWe report on seismic Earth models obtained with Adjoint Waveform Tomo graphy using Salvus. Salvus is a software package for managing the data an d computationally intensive workflow for seismic waveform inversion using adjoint methods. These methods use fully three-dimensional forward and adj oint simu...\n\n\nDomain: Climate, Weather and Earth Sciences, Computer Sc ience and Applied Mathematics, Physics END:VEVENT END:VCALENDAR