Lg attenuation in northeast China using NECESSArray data

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dc.citation.firstpage67en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleGeophysical Journal Internationalen_US
dc.citation.lastpage76en_US
dc.citation.volumeNumber2en_US
dc.contributor.authorRanasinghe, Nishath R.en_US
dc.contributor.authorGallegos, Andrea C.en_US
dc.contributor.authorTrujillo, Andrea R.en_US
dc.contributor.authorBlanchette, Alexander R.en_US
dc.contributor.authorSandvol, Eric A.en_US
dc.contributor.authorNi, Jamesen_US
dc.contributor.authorHearn, Thomas M.en_US
dc.contributor.authorTang, Youcaien_US
dc.contributor.authorGrand, Stephen P.en_US
dc.contributor.authorNiu, Fenglinen_US
dc.contributor.authorChen, Yongshun J.en_US
dc.contributor.authorNing, Jieyuanen_US
dc.contributor.authorKawakatsu, Hitoshien_US
dc.contributor.authorTanaka, Satoruen_US
dc.contributor.authorObayashi, Masayukien_US
dc.date.accessioned2015-01-08T14:55:03Zen_US
dc.date.available2015-01-08T14:55:03Zen_US
dc.date.issued2015en_US
dc.description.abstractThe 127 station NorthEast China Extended SeiSmic Array (NECESSArray) provides large quantities of high quality seismic data in northeast China that allow us to resolve lateral variations of Lg Q or crustal attenuation at 1 Hz (Qo) to 2.0° or greater. Using the reverse two-station/event method with 11 642 Lg path-amplitudes from 78 crustal earthquakes, we obtain a 2-D tomographic image of Lg Qo with values ranging from ∼50 to 1400. A high degree of detail in the lateral variation of Lg attenuation is revealed in our tomographic image. High Qo regions are found in the Great Xing'an, Lesser Xing'an and Songen-Zhangguangcai Ranges. Low Qo regions are observed in the Songliao, Sanjiang and Erlian Basins. The lowest Qo is found near the Wudalianchi volcanic field and other Quaternary volcanic fields, the southern Songliao Basin, the western edge of the Erlian Basin and the Sanjiang Basin. Low Qo values are measured for paths that cross sedimentary basins with thick, unconsolidated sediments. Most of the high Lg attenuation in the Songliao Basin correlates reasonably well with low crustal Rayleigh wave phase velocity anomalies. The highest attenuating regions also correlate well with regions of Holocene volcanism..en_US
dc.identifier.citationRanasinghe, Nishath R., Gallegos, Andrea C., Trujillo, Andrea R., et al.. "Lg attenuation in northeast China using NECESSArray data." <i>Geophysical Journal International,</i> 2, no. 1 (2015) Oxford University Press on behalf of The Royal Astronomical Society: 67-76. http://dx.doi.org/10.1093/gji/ggu375.en_US
dc.identifier.doihttp://dx.doi.org/10.1093/gji/ggu375en_US
dc.identifier.urihttps://hdl.handle.net/1911/78905en_US
dc.language.isoengen_US
dc.publisherOxford University Press on behalf of The Royal Astronomical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordtomographyen_US
dc.subject.keywordheat flowen_US
dc.subject.keywordearthquake ground motionsen_US
dc.subject.keywordseismicity and tectonicsen_US
dc.subject.keywordguided wavesen_US
dc.subject.keywordseismic attenuationen_US
dc.subject.keywordseismic tomographyen_US
dc.titleLg attenuation in northeast China using NECESSArray dataen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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