PRELIMINARY TOMOGRAPHY OF PUERTO RICO

Currently the Puerto Rico Seismic Network obtains the preliminary and revised locations of seismic events through Earlybird (EB), Earthworm (EW) and the Puerto Rico Data Analysis and Information System program (PRDANIS). This program records the arrival of all seismic events that occurred from a velocity model of five horizontal layers in 1D (Modelo de Corteza y Mecánica del Bloque de Puerto Rico, Huérfano, 1994). At present several studies of the earth’s internal structure have been performed, these studies identify and display the depths and 3D velocities of the earth using a seismic wave analysis, this method is known as Tomography. The Puerto Rico seismic network is in the process of implementing this method to get better knowledge of the geologic crust and surface of this area and to generate more accurate results of the earthquake locations. A more accurate location and analysis of earthquakes will help to get a better understanding of Earth's crust, as well as the accurate determination of the velocity fluctuations in the Puerto Rico, British Virgin Islands and USA areas.