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3D acoustic-elastic coupling with gravity: the dynamics of the 2018 Palu, Sulawesi earthquake and tsunami

Authors:

Carsten Uphoff,

Alice-Agnes Gabriel,

Lauren S. Abrahams,

Eric M. Dunham,

Michael BaderAuthors Info & Claims

SC '21: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis

Article No.: 63, Pages 1 - 14

https://doi.org/10.1145/3458817.3476173

Published: 13 November 2021 Publication History

Abstract

We present a highly scalable 3D fully-coupled Earth & ocean model of earthquake rupture and tsunami generation and perform the first fully coupled simulation of an actual earthquake-tsunami event and a 3D benchmark problem of tsunami generation by a megathrust dynamic earthquake rupture. Multi-petascale simulations, with excellent performance demonstrated on three different platforms, allow high-resolution forward modeling. Our largest mesh has ≈261 billion degrees of freedom, resolving at least 15 Hz of the acoustic wave field. We self-consistently model seismic, acoustic and surface gravity wave propagation in elastic (Earth) and acoustic (ocean) materials sourced by physics-based non-linear earthquake dynamic rupture, thereby gaining insight into the tsunami generation process without relying on approximations that have previously been applied to permit solution of this challenging problem. Complicated geometries, including high-resolution bathymetry, coastlines and segmented earthquake faults are discretized by adaptive unstructured tetrahedral meshes. This inevitably leads to large differences in element sizes and wave speeds which can be mitigated by ADER local time-stepping and a Discontinuous Galerkin discretization yielding high-order accuracy in time and space.

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Li BGabriel AHillers G(2024)Source Properties of the Induced ML 0.0–1.8 Earthquakes from Local Beamforming and Backprojection in the Helsinki Area, Southern FinlandSeismological Research Letters10.1785/0220240122Online publication date: 4-Sep-2024
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Hayek JMarchandon MLi DPousse‐Beltran LHollingsworth JLi TGabriel A(2024)Non‐Typical Supershear Rupture: Fault Heterogeneity and Segmentation Govern Unilateral Supershear and Cascading Multi‐Fault Rupture in the 2021 Mw ${M}_{w}$7.4 Maduo EarthquakeGeophysical Research Letters10.1029/2024GL11012851:20Online publication date: 14-Oct-2024
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Index Terms

3D acoustic-elastic coupling with gravity: the dynamics of the 2018 Palu, Sulawesi earthquake and tsunami
1. Applied computing
  1. Physical sciences and engineering
    1. Earth and atmospheric sciences

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cover image ACM Conferences

SC '21: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis

November 2021

1493 pages

ISBN:9781450384421

DOI:10.1145/3458817

General Chair:
Bronis R. de Supinski,
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Mary Hall,
Todd Gamblin

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Kutschera FGabriel AWirp SLi BUlrich TAbril CHalldórsson B(2024)Linked and fully coupled 3D earthquake dynamic rupture and tsunami modeling for the Húsavík–Flatey Fault Zone in North IcelandSolid Earth10.5194/se-15-251-202415:2(251-280)Online publication date: 14-Feb-2024
https://doi.org/10.5194/se-15-251-2024
Li BGabriel AHillers G(2024)Source Properties of the Induced ML 0.0–1.8 Earthquakes from Local Beamforming and Backprojection in the Helsinki Area, Southern FinlandSeismological Research Letters10.1785/0220240122Online publication date: 4-Sep-2024
https://doi.org/10.1785/0220240122
Hayek JMarchandon MLi DPousse‐Beltran LHollingsworth JLi TGabriel A(2024)Non‐Typical Supershear Rupture: Fault Heterogeneity and Segmentation Govern Unilateral Supershear and Cascading Multi‐Fault Rupture in the 2021 Mw ${M}_{w}$7.4 Maduo EarthquakeGeophysical Research Letters10.1029/2024GL11012851:20Online publication date: 14-Oct-2024
https://doi.org/10.1029/2024GL110128
Wang TDunham EKrenz LAbrahams LSegall PYoder M(2024)Dynamic Rupture Simulations of Caldera Collapse Earthquakes: Effects of Wave Radiation, Magma Viscosity, and Evidence of Complex Nucleation at Kı̄lauea 2018Journal of Geophysical Research: Solid Earth10.1029/2023JB028280129:4Online publication date: 3-Apr-2024
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Palgunadi KGabriel AGaragash DUlrich TMai P(2024)Rupture Dynamics of Cascading Earthquakes in a Multiscale Fracture NetworkJournal of Geophysical Research: Solid Earth10.1029/2023JB027578129:3Online publication date: 19-Mar-2024
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Li DGabriel A(2024) Linking 3D Long‐Term Slow‐Slip Cycle Models With Rupture Dynamics: The Nucleation of the 2014 M w 7.3 Guerrero, Mexico Earthquake AGU Advances10.1029/2023AV0009795:2Online publication date: 30-Mar-2024
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Someya MWatada SFurumura T(2024)2D FDM Simulation of Seismic Waves and Tsunamis Based on Improved Coupling Equations Under GravityPure and Applied Geophysics10.1007/s00024-024-03468-2181:4(1053-1073)Online publication date: 9-Apr-2024
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Dorozhinskii RGadeschi GBader M(2024)Fused GEMMs towards an efficient GPU implementation of the ADER‐DG method in SeisSolConcurrency and Computation: Practice and Experience10.1002/cpe.803736:12Online publication date: 13-Feb-2024
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Schliwa NGabriel A(2023)Equivalent Near-Field Corner Frequency Analysis of 3D Dynamic Rupture Simulations Reveals Dynamic Source EffectsSeismological Research Letters10.1785/022023022595:2A(900-924)Online publication date: 7-Dec-2023
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Krenz LWolf SHillers GGabriel ABader M(2023) Numerical Simulations of Seismoacoustic Nuisance Patterns from an Induced M 1.8 Earthquake in the Helsinki, Southern Finland, Metropolitan Area Bulletin of the Seismological Society of America10.1785/0120220225113:4(1596-1615)Online publication date: 7-Jul-2023
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