Figure 3 | Scientific Reports

Figure 3

From: Stress transfer patterns and local seismicity related to reservoir water-level variations. A case study in central Costa Rica

Figure 3

Water level variations over time in the Pirrís Reservoir (blue line) from the start of impoundment (March 2011) to December 2015. The time trend in seismicity for a 20 × 20 km2 area around the Pirrís Reservoir is shown (Seismic events with depths ≤20 km). The number of events recorded per month is shown, differentiating between ‘before’ (green), ‘during’ (orange) and ‘after’ (red).

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