Measurement of Rayleigh wave ellipticity and its application to the joint inversion of high-resolutionﾠSwave velocity structure beneath northeast China

Simple item page
dc.citation.firstpage864en_US
dc.citation.issueNumber2en_US
dc.citation.journalTitleJournal of Geophysical Research: Solid Earthen_US
dc.citation.lastpage880en_US
dc.citation.volumeNumber121en_US
dc.contributor.authorLi, Guoliangen_US
dc.contributor.authorChen, Haichaoen_US
dc.contributor.authorNiu, Fenglinen_US
dc.contributor.authorGuo, Zhenen_US
dc.contributor.authorYang, Yingjieen_US
dc.contributor.authorXie, Junen_US
dc.date.accessioned2017-05-23T19:32:18Zen_US
dc.date.available2017-05-23T19:32:18Zen_US
dc.date.issued2016en_US
dc.description.abstractWe present a new 3-D S wave velocity model of the northeast (NE) China from the joint inversion of the Rayleigh wave ellipticity and phase velocity at 8–40 s periods. Rayleigh wave ellipticity, or Rayleigh wave Z/H (vertical to horizontal) amplitude ratio, is extracted from both earthquake (10–40 s) and ambient noise data (8–25 s) recorded by the NorthEast China Extended SeiSmic Array with 127 stations. The estimated Z/H ratios from earthquake and ambient noise data show good consistency within the overlapped periods. The observed Z/H ratio shows a good spatial correlation with surface geology and is systematically low within the basins. We jointly invert the measured Z/H ratio and phase velocity dispersion data to obtain a refined 3-D S wave velocity model beneath the NE China. At shallow depth, the 3-D model is featured by strong low-velocity anomalies that are spatially well correlated with the Songliao, Sanjiang, and Erlian basins. The low-velocity anomaly beneath the Songliao basin extends to ~ 2–3 km deep in the south and ~5–6 km in the north. At lower crustal depths, we find a significant low-velocity anomaly beneath the Great Xing'an range that extends to the upper mantle in the south. Overall, the deep structures of the 3-D model are consistent with previous models, but the shallow structures show a much better spatial correlation with tectonic terranes. The difference in sedimentary structure between the southern and northern Songliao basin is likely caused by a mantle upwelling associated with the Pacific subduction.en_US
dc.identifier.citationLi, Guoliang, Chen, Haichao, Niu, Fenglin, et al.. "Measurement of Rayleigh wave ellipticity and its application to the joint inversion of high-resolutionﾠSwave velocity structure beneath northeast China." <i>Journal of Geophysical Research: Solid Earth,</i> 121, no. 2 (2016) Wiley: 864-880. https://doi.org/10.1002/2015JB012459.en_US
dc.identifier.doihttps://doi.org/10.1002/2015JB012459en_US
dc.identifier.urihttps://hdl.handle.net/1911/94363en_US
dc.language.isoengen_US
dc.publisherWileyen_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.titleMeasurement of Rayleigh wave ellipticity and its application to the joint inversion of high-resolutionﾠSwave velocity structure beneath northeast Chinaen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Rayleigh-wave-ellipticity.pdf
Size:
12.85 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Earth, Environmental and Planetary Sciences Publications