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Puerto Rico Seismic Network Tsunami Program

Tsunami Detection and Warning

The Tsunami Alert System monitors the seismic stations in Puerto Rico Seismic Network (PRSN), the Puerto Rico strong motion network and stations from others Caribbean networks (Figure 1), available in real time. The goal is to detect and report promptly, accurately and precisely all earthquakes of magnitude 4.5 or greater occured in the Caribbean and adjacent regions.

Earthworm (Earle et al. 2003) and SeisComp (Hanka et al. 2000) are programs used to exchange of real-time seismic data . The EarlyBird System is responsible for detection and subsequent review of the seismic data. The PR Danis Broadcast program is used to issue the information analyzed by the PRSN. In addition to automatically locate earthquakes, EarlyBird notifies to the PRSN staff when the parameters of the region have been exceeded.

In 2006, as part of the tsunami warning system, the PRSN installed in Puerto Rico six tide gauges stations funded by FEMA(Federal Emergency Management Agency), also two stations in Dominican Republic and GOES (Geostationary Operational Environmental Satellites) satellite receiver in Mayagüez in order to collect data from the tidal variation in this and other regions. These gauges complement the ten gauges operated by NOAA in Puerto Rico and Virgin Islands and others that may be available in the region and adjacent areas. All these equipments help to detect and confirm the tsunami generation and assessment of it impact.

Figure 1

Gauges:

Seismic Stations:

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