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dc.date.accessioned2018-08-14T15:31:54Z
dc.date.available2018-08-14T15:31:54Z
dc.date.created2011-07-26T14:39:10Z
dc.date.issued2011
dc.identifier.citationLee, Choon-Ki Han, Shin-Chan Steinberger, Bernard . Influence of variable uncertainties in seismic tomography models on constraining mantle viscosity from geoid observations. Physics of the Earth and Planetary Interiors. 2011, 184(1-2), 51-62
dc.identifier.urihttp://hdl.handle.net/10852/62956
dc.description.abstractThe radial viscosity structure of the Earth is explored on the basis of the geoid observations. The variations of uncertainty in seismic tomography models are accounted for when finding the radial viscosity structure. The new methodology we propose attempts to fit more closely those features of the geoid that are better constrained by tomography models and avoids to fit those features that are poorly constrained. This approach is particularly important because the error of geoid predictions caused by uncertainties in seismic tomography models is overwhelmingly larger than the noise in the geoid measurements. The synthetic tests indicate that the viscosity structures obtained by disregarding the uncertainty variations in seismic tomography models can be biased depending on the geoid spectral band and on the ‘input’ seismic tomography model. When the uncertainty variations in seismic models are considered in the inversion process, results do not indicate a viscosity in the transition zone lower than in the upper mantle. A robust feature found with the new method is a viscosity in the upper mantle two orders of magnitude smaller than in the lower mantle. The error covariance of seismic tomography models is critical for the method we suggest. A covariance matrix rigorously derived by seismologists should help to even more reliably infer the viscosity structure and relation between anomalies in density and seismic velocities from surface observations such as the geoid, and thus lead to a better knowledge of the Earth interior.en_US
dc.languageEN
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleInfluence of variable uncertainties in seismic tomography models on constraining mantle viscosity from geoid observationsen_US
dc.typeJournal articleen_US
dc.creator.authorLee, Choon-Ki
dc.creator.authorHan, Shin-Chan
dc.creator.authorSteinberger, Bernard
cristin.unitcode185,15,25,0
cristin.unitnameGeologiske prosessers fysikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1
dc.identifier.cristin830531
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physics of the Earth and Planetary Interiors&rft.volume=184&rft.spage=51&rft.date=2011
dc.identifier.jtitlePhysics of the Earth and Planetary Interiors
dc.identifier.volume184
dc.identifier.issue1-2
dc.identifier.startpage51
dc.identifier.endpage62
dc.identifier.doihttp://dx.doi.org/10.1016/j.pepi.2010.10.012
dc.identifier.urnURN:NBN:no-65492
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn0031-9201
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/62956/1/16485-2-46.pdf
dc.type.versionAcceptedVersion


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