Predicting the Geodetic Signature of Mw ≥ 8 Slow Slip Events
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CitationMeade, Brendan J., and John P. Loveless. 2009. Predicting the geodetic signature of MW ≥ 8 slow slip events. Geophysical Research Letters 36(L01306): 1-5.
AbstractElastic dislocation models of geodetic measurements above subduction zones have led to the identification of MW ≈ 6.0–7.2 slow slip events (SSEs) that release elastic strain over periods of days to months, but great (MW ≥ 8) SSEs have remained unidentified. We extrapolate observations of SSE duration and slip magnitude to show that slip velocity decreases with event magnitude and predict that the slip velocity of MW ≥ 8 SSEs is ≤50 mm/yr. The slip velocity for great SSEs may never exceed the plate convergence rate and thus never produce a reversal in trench perpendicular motion. Instead, geodetically constrained estimates of apparent partial elastic coupling on subduction zone interfaces worldwide may be direct observations of ongoing MW ≥ 8 silent earthquakes with durations of decades to centuries.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3354162
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