Global seismic tomography: A snapshot of convection in the earth

Stephen P. Grand, Rob D. Van Der Hilst, Sri Widiyantoro

    Research output: Contribution to journalArticle

    757 Citations (Scopus)

    Abstract

    Two new global high-resolution models of the P-wave and S-wave seismic structure of the mantle were derived independently using different inversion techniques and different data sets, but they show excellent correlation for many large-scale as well as smaller scale structures throughout the lower mantle. The two models show that high-velocity anomalies in the lower mantle are dominated by long linear features that can be associated with the sites of ancient subduction. The images suggest that most subduction-related mantle flow continues well into the lower mantle and that slabs may ultimately reach the core-mantle boundary. The models are available from anonymous ftp at maestro.geo.utexas.edu in directory pub/grand and at brolga.mit. edu in directory pub/GSAtoday.

    Original languageEnglish (US)
    JournalGSA Today
    Volume7
    Issue number4
    StatePublished - Dec 1 1997

    Fingerprint

    seismic tomography
    lower mantle
    directory
    convection
    subduction
    mantle
    core-mantle boundary
    P-wave
    S-wave
    slab
    anomaly

    ASJC Scopus subject areas

    • Geology

    Cite this

    Grand, S. P., Van Der Hilst, R. D., & Widiyantoro, S. (1997). Global seismic tomography: A snapshot of convection in the earth. GSA Today, 7(4).

    Global seismic tomography : A snapshot of convection in the earth. / Grand, Stephen P.; Van Der Hilst, Rob D.; Widiyantoro, Sri.

    In: GSA Today, Vol. 7, No. 4, 01.12.1997.

    Research output: Contribution to journalArticle

    Grand, SP, Van Der Hilst, RD & Widiyantoro, S 1997, 'Global seismic tomography: A snapshot of convection in the earth' GSA Today, vol. 7, no. 4.
    Grand SP, Van Der Hilst RD, Widiyantoro S. Global seismic tomography: A snapshot of convection in the earth. GSA Today. 1997 Dec 1;7(4).
    Grand, Stephen P. ; Van Der Hilst, Rob D. ; Widiyantoro, Sri. / Global seismic tomography : A snapshot of convection in the earth. In: GSA Today. 1997 ; Vol. 7, No. 4.
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