The new Nicaraguan seismic network

Abstract

The 16 station Nicaraguan seismic network was installed in 1975 as a consequence of the disastrous 1972 Managua earthquake. The network disappeared after 1982 and has now been partly rebuilt and modernized in a joint Central American effort. The new network currently has 9 FM telemetered stations, centrally digitized. The first 3 months of data shows that the detection threshold is now around magnitude 3.8 versus 2.9 for the old network. and that the depth resolution is somewhat low due to the current geometry. Despite the smaller size, the network has the potential to contribute significantly to Nicaraguan and Central American seismology by being digital and part of the Central American network. Some of its potential is demonstrated by modeling a deep earthquake.