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  • Title: Viscosity of oceanic asthenosphere inferred from remote triggering of earthquakes.
    Author: Pollitz FF, Burgmann R, Romanowicz B.
    Journal: Science; 1998 May 22; 280(5367):1245-9. PubMed ID: 9596574.
    Abstract:
    A sequence of large interplate earthquakes from 1952 to 1965 along the Aleutian arc and Kurile-Kamchatka trench released accumulated stresses along nearly the entire northern portion of the Pacific Plate boundary. The postseismic stress evolution across the northern Pacific and Arctic basins, calculated from a viscoelastic coupling model with an asthenospheric viscosity of 5 x 10(17) pascal seconds, is consistent with triggering of oceanic intraplate earthquakes, temporal patterns in seismicity at remote plate boundaries, and space-based geodetic measurements of anomalous velocity over an area 7000 by 7000 kilometers square during the 30-year period after the sequence.
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