Vertical ground motion model for PGA and spectral accelerations for the Chilean subduction zone

Vertical ground motion model for PGA and spectral accelerations for the Chilean subduction zone | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Vertical ground motion model for PGA and spectral accelerations for the Chilean subduction zone Horacio Dominguez, Pablo Heresi, Gonzalo Montalva, Felipe Leyton This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7801413/v1 This work is licensed under a CC BY 4.0 License Status: Under Revision Version 1 posted 6 You are reading this latest preprint version Abstract We present a ground motion model for computing medians and standard deviations of peak ground accelerations and 5%-damped spectral accelerations for vibration periods between 0.05s and 10s in the vertical component within the Chilean subduction zone. The model is derived from a database of 4760 ground motion records obtained by 300 strong-motion stations during 3595 interface and 1165 inslab events. This database includes records of megathrust earthquakes such as the M w 8.8 2010 Maule Earthquake, the M w 8.2 2014 Iquique Earthquake, and the M w 8.4 2015 Illapel Earthquake. Median values are computed as a function of the type of event (interface or inslab), moment magnitude, focal depth, source-to-site distance, and the time-averaged shear wave velocity in the upper 30 m of the site. The resulting standard deviation is similar to those of previously developed models for horizontal 5%-damped spectral accelerations within the Chilean subduction zone. Using the proposed model for the vertical component and previous models for the horizontal component, the median vertical-to-horizontal ratio varies between 0.4 and 0.9, depending on the period. Vertical Component Spectral Acceleration Ground Motion Model Chilean Subduction Zone Strong Motion Full Text Cite Share Download PDF Status: Under Revision Version 1 posted Editorial decision: Major Revisions Needed 13 May, 2026 Reviewers agreed at journal 12 Dec, 2025 Reviewers invited by journal 02 Dec, 2025 Editor invited by journal 24 Nov, 2025 Editor assigned by journal 23 Nov, 2025 First submitted to journal 20 Nov, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7801413","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":554005045,"identity":"31f79976-8871-41af-a826-269d3b0830ac","order_by":0,"name":"Horacio 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zone","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"bulletin-of-earthquake-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"beee","sideBox":"Learn more about [Bulletin of Earthquake Engineering](https://www.springer.com/journal/10518)","snPcode":"10518","submissionUrl":"https://submission.nature.com/new-submission/10518/3","title":"Bulletin of Earthquake Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Vertical Component Spectral Acceleration, Ground Motion Model, Chilean Subduction Zone, Strong Motion","lastPublishedDoi":"10.21203/rs.3.rs-7801413/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7801413/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eWe present a ground motion model for computing medians and standard deviations of peak ground accelerations and 5%-damped spectral accelerations for vibration periods between 0.05s and 10s in the vertical component within the Chilean subduction zone. The model is derived from a database of 4760 ground motion records obtained by 300 strong-motion stations during 3595 interface and 1165 inslab events. This database includes records of megathrust earthquakes such as the M\u003csub\u003ew\u003c/sub\u003e8.8 2010 Maule Earthquake, the M\u003csub\u003ew\u003c/sub\u003e8.2 2014 Iquique Earthquake, and the M\u003csub\u003ew\u003c/sub\u003e8.4 2015 Illapel Earthquake. Median values are computed as a function of the type of event (interface or inslab), moment magnitude, focal depth, source-to-site distance, and the time-averaged shear wave velocity in the upper 30 m of the site. The resulting standard deviation is similar to those of previously developed models for horizontal 5%-damped spectral accelerations within the Chilean subduction zone. Using the proposed model for the vertical component and previous models for the horizontal component, the median vertical-to-horizontal ratio varies between 0.4 and 0.9, depending on the period.\u003c/p\u003e","manuscriptTitle":"Vertical ground motion model for PGA and spectral accelerations for the Chilean subduction zone","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-12-04 17:06:59","doi":"10.21203/rs.3.rs-7801413/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Major Revisions Needed","date":"2026-05-13T06:05:54+00:00","index":"","fulltext":""},{"type":"reviewerAgreed","content":"","date":"2025-12-12T05:57:53+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-12-02T10:59:13+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"Bulletin of Earthquake Engineering","date":"2025-11-24T18:58:08+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-11-24T04:15:33+00:00","index":"","fulltext":""},{"type":"submitted","content":"Bulletin of Earthquake Engineering","date":"2025-11-20T13:46:22+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"bulletin-of-earthquake-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"beee","sideBox":"Learn more about [Bulletin of Earthquake Engineering](https://www.springer.com/journal/10518)","snPcode":"10518","submissionUrl":"https://submission.nature.com/new-submission/10518/3","title":"Bulletin of Earthquake Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"5d2b3cc4-9fc2-4bd7-8d33-ab29130a3774","owner":[],"postedDate":"December 4th, 2025","published":true,"recentEditorialEvents":[{"type":"decision","content":"Major Revisions Needed","date":"2026-05-13T06:05:54+00:00","index":"","fulltext":""}],"rejectedJournal":[],"revision":"","amendment":"","status":"in-revision","subjectAreas":[],"tags":[],"updatedAt":"2026-05-13T10:33:32+00:00","versionOfRecord":[],"versionCreatedAt":"2025-12-04 17:06:59","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7801413","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7801413","identity":"rs-7801413","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}