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Joint inversion for global isotropic and radially anisotropic mantle structure including crustal thickness perturbations
dc.contributor.authorChang, Sung‐joonen_US
dc.contributor.authorFerreira, Ana M. G.en_US
dc.contributor.authorRitsema, Jeroenen_US
dc.contributor.authorHeijst, Hendrik J.en_US
dc.contributor.authorWoodhouse, John H.en_US
dc.date.accessioned2015-08-05T16:47:36Z
dc.date.available2016-07-05T17:27:58Zen
dc.date.issued2015-06en_US
dc.identifier.citationChang, Sung‐joon ; Ferreira, Ana M. G.; Ritsema, Jeroen; Heijst, Hendrik J.; Woodhouse, John H. (2015). "Joint inversion for global isotropic and radially anisotropic mantle structure including crustal thickness perturbations." Journal of Geophysical Research: Solid Earth 120(6): 4278-4300.en_US
dc.identifier.issn2169-9313en_US
dc.identifier.issn2169-9356en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/112272
dc.description.abstractWe present a new global whole‐mantle model of isotropic and radially anisotropic S velocity structure (SGLOBE‐rani) based on ~43,000,000 surface wave and ~420,000 body wave travel time measurements, which is expanded in spherical harmonic basis functions up to degree 35. We incorporate crustal thickness perturbations as model parameters in the inversions to properly consider crustal effects and suppress the leakage of crustal structure into mantle structure. This is possible since we utilize short‐period group‐velocity data with a period range down to 16 s, which are strongly sensitive to the crust. The isotropic S velocity model shares common features with previous global S velocity models and shows excellent consistency with several high‐resolution upper mantle models. Our anisotropic model also agrees well with previous regional studies. Anomalous features in our anisotropic model are faster SV velocity anomalies along subduction zones at transition zone depths and faster SH velocity beneath slabs in the lower mantle. The derived crustal thickness perturbations also bring potentially important information about the crustal thickness beneath oceanic crusts, which has been difficult to constrain due to poor access compared with continental crusts.Key PointsWe used a massive and varied data set to constrain radially anisotropic mantle structureWe include crustal thickness perturbations as model parametersWe observe faster SV velocity along subduction slabs in the transition zoneen_US
dc.publisherCambridge Univ. Pressen_US
dc.publisherWiley Periodicals, Inc.en_US
dc.subject.othercrustal correctionen_US
dc.subject.othermantle structureen_US
dc.subject.othercrustal thicknessen_US
dc.subject.otherradial anisotropyen_US
dc.subject.otherglobal tomographyen_US
dc.titleJoint inversion for global isotropic and radially anisotropic mantle structure including crustal thickness perturbationsen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelGeological Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/112272/1/jgrb51168.pdf
dc.identifier.doi10.1002/2014JB011824en_US
dc.identifier.sourceJournal of Geophysical Research: Solid Earthen_US
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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