Abstract

We provide additional evidence of tectonic tremor in Cuba triggered by the 2010 Mw 8.8 Maule, Chile, and the 2011 Mw 9.0 Tohoku‐Oki, Japan, earthquakes. The high‐frequency tremor signals are modulated by long‐period surface waves, similar to triggered tremors observed in other tectonically active regions. We are able to locate two tremor sources triggered by the Tohoku‐Oki earthquake near the east–west trending Oriente fault around Guantanamo Bay. The tremor around Guantanamo Bay was triggered primarily by a Love wave of the Maule mainshock, and by both Love and Rayleigh waves of the Tohoku‐Oki mainshock. This is consistent with frictional failures at a vertical strike‐slip fault under a Coulomb failure criterion.

Online Material: Figure of envelope functions of tremor records, and movies of spectogram and tremor correlation.

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