TY - JOUR
T1 - Mantle flow at a slab edge
T2 - Seismic anisotropy in the Kamchatka region
AU - Peyton, Valerie
AU - Levin, Vadim
AU - Park, Jeffrey
AU - Brandon, Mark
AU - Lees, Jonathan
AU - Gordeev, Evgenii
AU - Ozerov, Alexei
PY - 2001/1/15
Y1 - 2001/1/15
N2 - The junction of the Aleutian Island and the Kamchatka peninsula defines a sharp turn in the boundary of the Pacific and North American plates, terminating the subduction zones of the northwest Pacific. The regional pattern of shear-wave birefringence near the junction indicates that trench-parallel strain follows the seismogenic Benioff zone, but rotates to trench-normal beyond the slab edge. Asthenospheric mantle is inferred to flow around and beneath the disrupted slab edge, and may influence the shallowing dip of the Benioff zone at the Aleutian junction.
AB - The junction of the Aleutian Island and the Kamchatka peninsula defines a sharp turn in the boundary of the Pacific and North American plates, terminating the subduction zones of the northwest Pacific. The regional pattern of shear-wave birefringence near the junction indicates that trench-parallel strain follows the seismogenic Benioff zone, but rotates to trench-normal beyond the slab edge. Asthenospheric mantle is inferred to flow around and beneath the disrupted slab edge, and may influence the shallowing dip of the Benioff zone at the Aleutian junction.
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U2 - 10.1029/2000GL012200
DO - 10.1029/2000GL012200
M3 - Article
AN - SCOPUS:0035862116
SN - 0094-8276
VL - 28
SP - 379
EP - 382
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 2
ER -