Item talk:Q305122
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Basin effects from 3D simulated ground motions in the Greater Los Angeles region for use in seismic-hazard analyses", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70256977", "url": "https://pubs.usgs.gov/publication/70256977" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70256977 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1177/87552930241232372", "url": "https://doi.org/10.1177/87552930241232372" } ], "journal": { "@type": "Periodical", "name": "Earthquake Spectra", "volumeNumber": "40", "issueNumber": "2" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Earthquake Spectra" } ], "datePublished": "2024", "dateModified": "2024-08-05", "abstract": "We develop basin-depth-scaling models (i.e. \u201cbasin terms\u201d) from the long-period (\u2060T\u22652s\u2060) simulated ground motions of the Southern California Earthquake Center (SCEC) CyberShake project for use in seismic hazard analyses at sites within the sedimentary basins of southern California. Basin terms use the Next Generation Attenuation (NGA)-West-2 ground-motion models (GMMs) as reference models and use their functional forms with slight modifications. We investigate the use of two approaches to incorporate the time-averaged shear-wave velocity in the upper 30\u2009m (\u2060VS30\u2060) in these calculations and find that the use of site-specific and uniform\u00a0VS30\u00a0has minor effects on the resulting basin terms for this data set. By centering the simulated ground motions on the basin terms, we separate the information from the simulations about absolute ground-motion level from information relating to the relative amplifications, such as the differences between shallow- and deep-basin sites. Recent observations from sedimentary basins of southern California indicate that additional amplification effect may persist at relatively shallow basin depths (i.e. the GMM basin terms should have positive values when differential depths,\u00a0\u03b4Z1\u2060, are near zero), and we present models for \u201ccentered\u201d and \u201cadjusted\u201d basin-depth scaling models that reflect this potential. The simulation-modified GMMs are appropriate for crustal sources and for deep-basin sites (\u2060\u03b4Z1>0\u2060) within basins of the Greater Los Angeles region, for the magnitudes and distances defined by each of the reference NGA-West-2 GMMs.", "description": "24 p.", "publisher": { "@type": "Organization", "name": "Earthquake Engineering Research Institute" }, "author": [ { "@type": "Person", "name": "Moschetti, Morgan P. mmoschetti@usgs.gov", "givenName": "Morgan P.", "familyName": "Moschetti", "email": "mmoschetti@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-7261-0295", "url": "https://orcid.org/0000-0001-7261-0295" }, "affiliation": [ { "@type": "Organization", "name": "Geologic Hazards Science Center", "url": "https://www.usgs.gov/centers/geologic-hazards-science-center" } ] }, { "@type": "Person", "name": "Thompson, Eric M. emthompson@usgs.gov", "givenName": "Eric M.", "familyName": "Thompson", "email": "emthompson@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-6943-4806", "url": "https://orcid.org/0000-0002-6943-4806" }, "affiliation": [ { "@type": "Organization", "name": "Geologic Hazards Science Center", "url": "https://www.usgs.gov/centers/geologic-hazards-science-center" } ] }, { "@type": "Person", "name": "Withers, Kyle", "givenName": "Kyle", "familyName": "Withers", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-7863-3930", "url": "https://orcid.org/0000-0001-7863-3930" }, "affiliation": [ { "@type": "Organization", "name": "Geologic Hazards Science Center", "url": "https://www.usgs.gov/centers/geologic-hazards-science-center" } ] } ], "funder": [ { "@type": "Organization", "name": "Geologic Hazards Science Center - 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