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| Collot, Jean-julien; Sanclemente, Eddy; Nocquet, Jean-mathieu; Lepretre, Angelique; Ribodetti, Alessandra; Jarrin, Paul; Chlieh, Mohamed; Graindorge, David; Charvis, Philippe. |
| Whether subducted oceanic reliefs such as seamounts promote seismic rupture or aseismic slip remains controversial. Here we use swath bathymetry, prestack depth-migrated multichannel seismic reflection lines, and wide-angle seismic data collected across the central Ecuador subduction segment to reveal a broad similar to 55kmx50km, similar to 1.5-2.0km high, low height-to-width ratio, multipeaked, sediment-bare, shallow subducted oceanic relief. Owing to La Plata Island and the coastline being located, respectively, similar to 35km and similar to 50-60km from the trench, GPS measurements allow us to demonstrate that the subducted oceanic relief spatially correlates to a shallow, similar to 80kmx55km locked interplate asperity within a dominantly creeping... |
| Tipo: Text |
Palavras-chave: Seamount subduction; Interseismic coupling; Seismic imaging; Slow slip event; Megathrust earthquake. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00638/75038/75652.pdf |
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