Physics – Geophysics
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3115605k&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 15, CiteID L15605
Physics
Geophysics
6
Marine Geology And Geophysics: Plate Tectonics (8150, 8155, 8157, 8158), Mathematical Geophysics: Modeling, Tectonophysics: Dynamics Of Lithosphere And Mantle-General, Tectonophysics: Rheology-Mantle, Volcanology: Magma Migration
Scientific paper
Global observations of mid-ocean ridge (MOR) bathymetry demonstrate an asymmetry in axial depth across ridge offsets that is correlated with the direction of ridge migration. Motivated by these observations, we have developed two-dimensional numerical models of asthenospheric flow and melting beneath a migrating MOR. The modification of the flow pattern produced by ridge migration leads to an asymmetry in melt production rates on either side of the ridge. By coupling a simple parametric model of three dimensional melt focusing to our simulations, we generate predictions of axial depth differences across offsets in the MOR. These predictions are quantitatively consistent with the observed asymmetry.
Carbotte Suzanne M.
Katz Richard F.
Spiegelman Marc
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