Shaded relief map of southwestern Puerto Rico showing all seismic events processed by the Puerto Rico Seismic Network between Dec. 28, 2019 and Jan. 22, 2020. A total of 2,320 events are represented as red circles. White circles with black dot in the center correspond to the most significant events in the sequence, which started on Dec. 28, 2019. The yellow line represents an estimated location of the Punta Montalva left-lateral strike-slip fault, which is thought to have an offshore extension responsible for the seismic activity. Stars represent seismic or geodetic stations. A noticeable NW and NNE spatial distribution of the events may represent faults responsible for the current seismic activity.

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Shaded relief map of southwestern Puerto Rico showing all seismic events processed by the Puerto Rico Seismic Network between Dec. 28, 2019 and Jan. 22, 2020. A total of 2,320 events are represented as red circles. White circles with black dot in the center correspond to the most significant events in the sequence, which started on Dec. 28, 2019. The yellow line represents an estimated location of the Punta Montalva left-lateral strike-slip fault, which is thought to have an offshore extension responsible for the seismic activity. Stars represent seismic or geodetic stations. A noticeable NW and NNE spatial distribution of the events may represent faults responsible for the current seismic activity.

Shaded relief map of southwestern Puerto Rico showing all seismic events processed by the Puerto Rico Seismic Network between Dec. 28, 2019 and Jan. 22, 2020. A total of 2,320 events are represented as red circles. White circles with black dot in the center correspond to the most significant events in the sequence, which started on Dec. 28, 2019. The yellow line represents an estimated location of the Punta Montalva left-lateral strike-slip fault, which is thought to have an offshore extension responsible for the seismic activity. Stars represent seismic or geodetic stations. A noticeable NW and NNE spatial distribution of the events may represent faults responsible for the current seismic activity.

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