All stations appear to have recorded data.
The network was installed to record local and regional earthquakes as part of a series of studies planned to better assess the hazard to Puerto Rico and the Virgin Islands from earthquakes, submarine slides, and tsunamis. The data collected by the temporary array were augmented by data collected by the permanent seismic stations of the Puerto Rico Seismic Network. The combined data sets will be used to locate earthquakes more accurately than is presently possible, because the accuracy of an earthquake location depends on the distance from the earthquake to the seismometers and on the geographical distribution of the seismometers. Many of the marine and land seismometers were placed at intervals of 15-25 km along two perpendicular arrays. The data from these arrays will be used to construct seismic-velocity maps of the Earth's crust under the arrays.