<tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale
In this paper, we present SEM3D: a 3D high-fidelity numerical earthquake simulator that is tailored to predict the seismic wave field of complex earthquake scenarios from the fault to the epicenter site. SEM3D solves the wave-propagation problem by means of the spectral element method (SEM). The pre...
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MDPI AG
2022-03-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/12/3/112 |
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| author | Sara Touhami Filippo Gatti Fernando Lopez-Caballero Régis Cottereau Lúcio de Abreu Corrêa Ludovic Aubry Didier Clouteau |
| author_facet | Sara Touhami Filippo Gatti Fernando Lopez-Caballero Régis Cottereau Lúcio de Abreu Corrêa Ludovic Aubry Didier Clouteau |
| author_sort | Sara Touhami |
| collection | DOAJ |
| description | In this paper, we present SEM3D: a 3D high-fidelity numerical earthquake simulator that is tailored to predict the seismic wave field of complex earthquake scenarios from the fault to the epicenter site. SEM3D solves the wave-propagation problem by means of the spectral element method (SEM). The presented demonstrative test case was a blind <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mi>W</mi></msub></semantics></math></inline-formula>6.0 earthquake scenario at the European experimental site located in the sedimentary basin of Argostoli on the island of Kefalonia (Western Greece). A well-constrained geological model, obtained via geophysical inversion studies, and seismological model, given the large database of seismic traces recorded by the newly installed ARGONET network, of the site were considered. The domain of interest covered a region of 44 km × 44 km × 63 km, with the smallest grid size of 130 m × 130 m × 35 m. This allowed us to simulate the ground shaking in its entirety, from the seismic source to the epicenter site within a 0–10 Hz frequency band. Owing to the pseudo-spectral nature of the numerical method and given the high polynomial order (i.e., degree nine), the model featured 1.35·10<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>10</mn></msup></semantics></math></inline-formula> DOFs (degrees of freedom). The variability of the synthetic wave field generated within the basin is assessed herein, exploring different random realizations of the mean velocity structure and heterogeneous rupture path. |
| first_indexed | 2024-03-09T19:47:26Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-09T19:47:26Z |
| publishDate | 2022-03-01 |
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| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-93d9519b974f420ea44ea1204c1692a82023-11-24T01:20:25ZengMDPI AGGeosciences2076-32632022-03-0112311210.3390/geosciences12030112<tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional ScaleSara Touhami0Filippo Gatti1Fernando Lopez-Caballero2Régis Cottereau3Lúcio de Abreu Corrêa4Ludovic Aubry5Didier Clouteau6Laboratoire de Mécanique Paris-Saclay, Université Paris-Saclay, CentraleSupélec, ENS Paris-Saclay, CNRS, 8-10 rue Joliot Curie, 91190 Gif sur Yvette, FranceLaboratoire de Mécanique Paris-Saclay, Université Paris-Saclay, CentraleSupélec, ENS Paris-Saclay, CNRS, 8-10 rue Joliot Curie, 91190 Gif sur Yvette, FranceLaboratoire de Mécanique Paris-Saclay, Université Paris-Saclay, CentraleSupélec, ENS Paris-Saclay, CNRS, 8-10 rue Joliot Curie, 91190 Gif sur Yvette, FranceUMR 7031 Laboratoire de Mécanique et Acoustique, Aix-Marseille University, CNRS, Centrale Marseille, impasse Nikola Tesla, 13453 Marseille, FrancePost-Graduation Program in Mining, Metallurgy and Materials Engineering (PPGEM), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 90040-060, BrazilCEA, DAM, DIF, 91297 Arpajon, FranceLaboratoire de Mécanique Paris-Saclay, Université Paris-Saclay, CentraleSupélec, ENS Paris-Saclay, CNRS, 8-10 rue Joliot Curie, 91190 Gif sur Yvette, FranceIn this paper, we present SEM3D: a 3D high-fidelity numerical earthquake simulator that is tailored to predict the seismic wave field of complex earthquake scenarios from the fault to the epicenter site. SEM3D solves the wave-propagation problem by means of the spectral element method (SEM). The presented demonstrative test case was a blind <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mi>W</mi></msub></semantics></math></inline-formula>6.0 earthquake scenario at the European experimental site located in the sedimentary basin of Argostoli on the island of Kefalonia (Western Greece). A well-constrained geological model, obtained via geophysical inversion studies, and seismological model, given the large database of seismic traces recorded by the newly installed ARGONET network, of the site were considered. The domain of interest covered a region of 44 km × 44 km × 63 km, with the smallest grid size of 130 m × 130 m × 35 m. This allowed us to simulate the ground shaking in its entirety, from the seismic source to the epicenter site within a 0–10 Hz frequency band. Owing to the pseudo-spectral nature of the numerical method and given the high polynomial order (i.e., degree nine), the model featured 1.35·10<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>10</mn></msup></semantics></math></inline-formula> DOFs (degrees of freedom). The variability of the synthetic wave field generated within the basin is assessed herein, exploring different random realizations of the mean velocity structure and heterogeneous rupture path.https://www.mdpi.com/2076-3263/12/3/112computational earthquake engineeringstrong ground motion predictionsite effectsHPC numerical simulation |
| spellingShingle | Sara Touhami Filippo Gatti Fernando Lopez-Caballero Régis Cottereau Lúcio de Abreu Corrêa Ludovic Aubry Didier Clouteau <tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale Geosciences computational earthquake engineering strong ground motion prediction site effects HPC numerical simulation |
| title | <tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale |
| title_full | <tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale |
| title_fullStr | <tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale |
| title_full_unstemmed | <tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale |
| title_short | <tt>SEM3D</tt>: A 3D High-Fidelity Numerical Earthquake Simulator for Broadband (0–10 Hz) Seismic Response Prediction at a Regional Scale |
| title_sort | tt sem3d tt a 3d high fidelity numerical earthquake simulator for broadband 0 10 hz seismic response prediction at a regional scale |
| topic | computational earthquake engineering strong ground motion prediction site effects HPC numerical simulation |
| url | https://www.mdpi.com/2076-3263/12/3/112 |
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