Journal
SCIENCE
Volume 319, Issue 5861, Pages 315-318Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1150809
Keywords
-
Categories
Ask authors/readers for more resources
Although the morphologies of subducting slabs have been relatively well characterized, the character of the mantle flow field that accompanies subduction remains poorly understood. To analyze this pattern of flow, we compiled observations of seismic anisotropy, as manifested by shear wave splitting. Data from 13 subduction zones reveal systematic variations in both mantle- wedge and subslab anisotropy with the magnitude of trench migration velocity | V-t|. These variations can be explained by flow along the strike of the trench induced by trench motion. This flow dominates beneath the slab, where its magnitude scales with | V-t|. In the mantle wedge, this flow interacts with classical corner flow produced by the convergence velocity V-c; their relative influence is governed by the relative magnitude of | V-t| and V-c.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available