Sedimentary structure of the western Bohai Bay basin and other basins in North China revealed by frequency dependent P-wave particle motion

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dc.citation.firstpage372en_US
dc.citation.issueNumber5en_US
dc.citation.journalTitleGeodesy and Geodynamicsen_US
dc.citation.lastpage381en_US
dc.citation.volumeNumber10en_US
dc.contributor.authorYang, Chenhaoen_US
dc.contributor.authorNiu, Fenglinen_US
dc.date.accessioned2019-11-05T17:30:02Zen_US
dc.date.available2019-11-05T17:30:02Zen_US
dc.date.issued2019en_US
dc.description.abstractHigh-resolution seismic models of sediment basins are critical inputs for earthquake ground motion prediction and petroleum resource exploration. In this study we employed a newly developed technique that utilizes the frequency-dependent nonlinear P-wave particle motion to estimate sedimentary structure beneath the Bohai Bay basin. A recent study suggests that the delay of the P wave on the horizontal component relative the vertical component and its variations over frequency are caused by interference of the direct P wave with waves generated at the sediment base. The frequency-dependent delay time can be used to constrain sediment thickness and seismic velocity beneath recording stations. We measured the particle motions of teleseismic P waves recorded by 249 broadband stations of the North China Array, which covers the western Bohai Bay basin and its surrounding areas. We found that the P waves of 90 stations inside the Bohai Bay basin and other local basins within the Taihang and Yanshan mountain ranges exhibit significant frequency-dependent nonlinear particle motions, and used the particle motion data to invert the sediment thickness (Z0) and surface S-wave velocity (β0). The estimated sediment thickness inside the Bohai Bay Basin varies from 1.02 km to 3.72 km, with an average of 3.20 km, which roughly agrees with previous active source studies.en_US
dc.identifier.citationYang, Chenhao and Niu, Fenglin. "Sedimentary structure of the western Bohai Bay basin and other basins in North China revealed by frequency dependent P-wave particle motion." <i>Geodesy and Geodynamics,</i> 10, no. 5 (2019) Elsevier: 372-381. https://doi.org/10.1016/j.geog.2018.04.007.en_US
dc.identifier.digitalSedimentary-structureen_US
dc.identifier.doihttps://doi.org/10.1016/j.geog.2018.04.007en_US
dc.identifier.urihttps://hdl.handle.net/1911/107594en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/).en_US
dc.subject.keywordTeleseismic P waveen_US
dc.subject.keywordNonlinear particle motionen_US
dc.subject.keywordFrequency-dependenten_US
dc.subject.keywordSediment structureen_US
dc.subject.keywordBohai Bay basinen_US
dc.titleSedimentary structure of the western Bohai Bay basin and other basins in North China revealed by frequency dependent P-wave particle motionen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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