Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe
We present a modeling technique for generating synthetic ground motions, aimed at earthquakes of design significance for critical structures and ground motions at distances corresponding to the engineering near field, in which real data are often missing. We use dynamic modeling based on the finite-...
Published in: | Bulletin of the Seismological Society of America |
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ftvttcrispub:oai:cris.vtt.fi:publications/ace8d2dd-ea09-4979-92f3-c6d8c4dcf431 2023-05-15T16:11:58+02:00 Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe Jussila, Vilho Fälth, Billy Mäntyniemi, Päivi Voss, Peter H. Lund, Björn Fülöp, Ludovic 2021-10-01 https://cris.vtt.fi/en/publications/ace8d2dd-ea09-4979-92f3-c6d8c4dcf431 https://doi.org/10.1785/0120210081 http://www.scopus.com/inward/record.url?scp=85116008844&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Jussila , V , Fälth , B , Mäntyniemi , P , Voss , P H , Lund , B & Fülöp , L 2021 , ' Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe ' , Bulletin of the Seismological Society of America , vol. 111 , no. 5 , pp. 2507-2526 . https://doi.org/10.1785/0120210081 article 2021 ftvttcrispub https://doi.org/10.1785/0120210081 2022-10-13T14:12:54Z We present a modeling technique for generating synthetic ground motions, aimed at earthquakes of design significance for critical structures and ground motions at distances corresponding to the engineering near field, in which real data are often missing. We use dynamic modeling based on the finite-difference approach to simulate the rupture process within a fault, followed by kinematic modeling to generate the ground motions. The earthquake source ruptures were modeled using the 3D distinct element code (Itasca, 2013). We then used the complete synthetic program by Spudich and Xu (2002) to simulate the propagation of seismic waves and to obtain synthetic ground motions. In this work, we demonstrate the method covering the frequency ranges of engineering interests up to 25 Hz and quantify the differences in ground motion generated. We compare the synthetic ground motions for distances up to 30 km with a ground-motion prediction equation, which synthesizes the expected ground motion and its randomness based on observa-tions. The synthetic ground motions can be used to supplement observations in the near field for seismic hazard analysis. We demonstrate the hybrid approach to one critical site in the Fennoscandian Shield, northern Europe. Article in Journal/Newspaper Fennoscandia Fennoscandian VTT's Research Information Portal Bulletin of the Seismological Society of America 111 5 2507 2526 |
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Open Polar |
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VTT's Research Information Portal |
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ftvttcrispub |
language |
English |
description |
We present a modeling technique for generating synthetic ground motions, aimed at earthquakes of design significance for critical structures and ground motions at distances corresponding to the engineering near field, in which real data are often missing. We use dynamic modeling based on the finite-difference approach to simulate the rupture process within a fault, followed by kinematic modeling to generate the ground motions. The earthquake source ruptures were modeled using the 3D distinct element code (Itasca, 2013). We then used the complete synthetic program by Spudich and Xu (2002) to simulate the propagation of seismic waves and to obtain synthetic ground motions. In this work, we demonstrate the method covering the frequency ranges of engineering interests up to 25 Hz and quantify the differences in ground motion generated. We compare the synthetic ground motions for distances up to 30 km with a ground-motion prediction equation, which synthesizes the expected ground motion and its randomness based on observa-tions. The synthetic ground motions can be used to supplement observations in the near field for seismic hazard analysis. We demonstrate the hybrid approach to one critical site in the Fennoscandian Shield, northern Europe. |
format |
Article in Journal/Newspaper |
author |
Jussila, Vilho Fälth, Billy Mäntyniemi, Päivi Voss, Peter H. Lund, Björn Fülöp, Ludovic |
spellingShingle |
Jussila, Vilho Fälth, Billy Mäntyniemi, Päivi Voss, Peter H. Lund, Björn Fülöp, Ludovic Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe |
author_facet |
Jussila, Vilho Fälth, Billy Mäntyniemi, Päivi Voss, Peter H. Lund, Björn Fülöp, Ludovic |
author_sort |
Jussila, Vilho |
title |
Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe |
title_short |
Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe |
title_full |
Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe |
title_fullStr |
Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe |
title_full_unstemmed |
Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe |
title_sort |
application of a hybrid modeling method for generating synthetic ground motions in fennoscandia, northern europe |
publishDate |
2021 |
url |
https://cris.vtt.fi/en/publications/ace8d2dd-ea09-4979-92f3-c6d8c4dcf431 https://doi.org/10.1785/0120210081 http://www.scopus.com/inward/record.url?scp=85116008844&partnerID=8YFLogxK |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Jussila , V , Fälth , B , Mäntyniemi , P , Voss , P H , Lund , B & Fülöp , L 2021 , ' Application of a Hybrid Modeling Method for Generating Synthetic Ground Motions in Fennoscandia, Northern Europe ' , Bulletin of the Seismological Society of America , vol. 111 , no. 5 , pp. 2507-2526 . https://doi.org/10.1785/0120210081 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1785/0120210081 |
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Bulletin of the Seismological Society of America |
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111 |
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5 |
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2507 |
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2526 |
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1765997185916207104 |