Intense interface seismicity triggered by a shallow slow slip event in the Central Ecuador subduction zone,
- Vallée, M.
- Nocquet, J.-M.
- Battaglia, Jean
- Font, Y.
- Segovia, M.
- Regnier, M.
- Mothes, P.
- Jarrin, P.
- Cisneros, D.
- Vaca, S.
- Yepes, H.
- Martin, X.
- Béthoux, N.
- Chlieh, M.
DOIAbstract
International audienceWe document a 1 week long slow slip event (SSE) with an equivalent moment magnitude of 6.0-6.3 which occurred in August 2010 below La Plata Island (Ecuador), south of the rupture area of the 1906 Mw = 8.8 megathrust earthquake. GPS data reveal that the SSE occurred at a depth of about 10 km, within the downdip part of a shallow (<15 km), isolated, locked patch along the subduction interface. The availability of both broadband seismometer and continuous geodetic station located at the La Plata Island, 10 km above the SSE, enables a careful analysis of the relationships between slow and rapid processes of stress release along the subduction interface. During the slow slip sequence, the seismic data show a sharp increase ...
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