Azimuthally anisotropic model of the oceanic upper mantle

Details Azimuthally anisotropic model of the oceanic upper mantle Azimuthally anisotropic model of the oceanic upper mantle

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...43....1k&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 43, Issue 1, p. 1-21.

Physics

20

Scientific paper

A mixed form of forward and backward modelings of azimuthally anisotropic oceanic upper mantle is attempted for a data set of surface-wave velocities of periods 30-100 s. One of the basic configurations of the anisotropy postulated in the LID and LVZ is axial symmetry of elastic properties with a horizontal axis parallel to the spreading direction as found in ultramafic rocks from ophiolite complexes of the Bay of Islands and Oman. Basic features of the resulting model are a thin lithosphere of ~45 km, a decrease of S-wave velocities, and an increase of P-wave velocities and of partial melting/dislocation relaxation with depth in the LVZ.
This single model explains the overall features of anisotropy observations in the Pacific ocean: Pn velocity anisotropy, SH-SV anisotropy and azimuthal anisotropy of surface waves and ScS polarization anisotropy. This fact leads us to a conclusion that the ultramafic rocks from the ophiolite complexes can explain the seismic properties of the oceanic LID and LVZ.

Affiliated with

Also associated with

No associations

Rating

Azimuthally anisotropic model of the oceanic upper mantle does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Azimuthally anisotropic model of the oceanic upper mantle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Azimuthally anisotropic model of the oceanic upper mantle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1775794