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https://hdl.handle.net/1822/88729
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Campo DC | Valor | Idioma |
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dc.contributor.author | Karimzadeh, Shaghayegh | por |
dc.contributor.author | Mohammadi, Amirhossein | por |
dc.contributor.author | Salahuddin, Usman | por |
dc.contributor.author | Carvalho, Alexandra | por |
dc.contributor.author | Lourenço, Paulo B. | por |
dc.date.accessioned | 2024-02-12T10:26:16Z | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | Karimzadeh, S., Mohammadi, A., Salahuddin, U., Carvalho, A., & Lourenço, P. B. (2023, November 14). Backbone ground motion model through simulated records and XGBoost machine learning algorithm: An application for the Azores plateau (Portugal). Earthquake Engineering & Structural Dynamics. Wiley. http://doi.org/10.1002/eqe.4040 | - |
dc.identifier.issn | 0098-8847 | por |
dc.identifier.uri | https://hdl.handle.net/1822/88729 | - |
dc.description.abstract | Azores Islands are seismically active due to the tectonic structure of the region. Since the 15th century, they have been periodically shaken by approximately 33 moderate to strong earthquakes, with the most recent one in 1998 (Mw = 6.2). Nonetheless, due to insufficient instrumental seismic data, the region lacks a uniform database of past real records. Ground motion simulation techniques provide alternative region-specific time series of prospective events for locations with limited seismic networks or regions with a seismic gap of catastrophic earthquake events. This research establishes a local ground motion model (GMM) for the Azores plateau (Portugal) by simulating region-specific records for constructing a homogeneous dataset. Simulations are accomplished in bedrock using the stochastic finite-fault approach by employing validated input-model parameters. The simulation results undergo validation against the 1998 Faial event and comparison with empirical models for volcanic and Pan-European datasets. A probabilistic numerical technique, namely the Monte-Carlo simulation, is employed to estimate the outcome of uncertainty associated with these parameters. The results of the simulations are post-processed to predict the peak ground motion parameters in addition to spectral ordinates. This study uses XGBoost to circumvent the difficulties inherent to linear regression-based models in establishing the form of equations and coefficients. The input parameters for prediction are moment magnitude (Mw), Joyner and Boore distance (RJB), and focal depth (FD). The quantification of GMM uncertainty is accomplished by analyzing the residuals, providing insight into inter- and intra-event uncertainties. The outcomes demonstrate the effectiveness of the suggested model in simulating physical phenomena. | por |
dc.description.sponsorship | This work was partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020, and under the Asso ciate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020. This study has been partly funded by the STAND4HERITAGE project that has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant agreement No. 833123), as an Advanced Grant. This work is partially financed by national funds through FCT – Foundation for Science and Technology, under grant agreement 2020.08876.BD attributed to the second author. | por |
dc.language.iso | eng | por |
dc.publisher | Wiley | por |
dc.relation | info:eu-repo/grantAgreement/FCT/POR_NORTE/2020.08876.BD/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04029%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/833123/EU | - |
dc.rights | restrictedAccess | por |
dc.subject | Azores plateau (Portugal) | por |
dc.subject | Ground motion model (GMM) | por |
dc.subject | Stochastic finite-fault ground motion simulation | por |
dc.subject | XGBoost | por |
dc.title | Backbone ground motion model through simulated records and XGBoost machine learning algorithm: An application for the Azores plateau (Portugal) | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
oaire.citationStartPage | 668 | por |
oaire.citationEndPage | 693 | por |
oaire.citationIssue | 2 | por |
oaire.citationVolume | 53 | por |
dc.date.updated | 2024-02-05T05:59:34Z | - |
dc.identifier.doi | 10.1002/eqe.4040 | por |
dc.date.embargo | 10000-01-01 | - |
sdum.export.identifier | 13119 | - |
sdum.journal | Earthquake Engineering and Structural Dynamics | por |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
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2024_EESD_53_2_Backbone ground motion model through simulated records and XGBoost machine learning algorithm An application for the Azores plateau (Portugal).pdf Acesso restrito! | 11,54 MB | Adobe PDF | Ver/Abrir |