On February 21, 1996, an earthquake shook the northern region of Peru. This event generated a tsunami with 2-3 m height waves. From the analysis and the signal processing of 15 broadband teleseismic stations, a waveform inversion was performed to obtain the focal mechanism and source time function indicating a complex rupture process. The total duration of the rupture was 75 s, a rather high value for a relatively small earthquake. The calculated scalar seismic moment was 3.8 × 1020 Nm, which corresponds to a moment magnitude of 7.6 Mw. The slip distribution is heterogeneous, consistent with the source time function, with a maximum slip of 6.6 m around the main asperity concentrated in an area of 30×30 km2. Coseismic deformation field was calculated for 28 sub-faults, which was used as the initial condition of the tsunami propagation. Synthetics mareograms were calculated for Chimbote ...

The 1994 Bolivia earthquake, with hypocenter at 641 km depth, is the greater magnitude earthquake recorded instrumentally in the last 50 years. This earthquake did not produce damage in the surface but was perceived in most of the southern hemisphere. This seismic event had a multiple (complex) rupture process during 55 s and the rupture propagated towards N-E direction with a 1.6 km/s mean velocity. The size of the rupture was around 90 km; however, the principal asperity was contained within an area of 40×40 km2. The rupture corresponds to a focal mechanism of normal type with planes oriented in the E-W direction, being the fault plane close to the vertical. The scalar seismic moment calculated by teleseismic body waveform inversion is 2.30 × 1021 Nm and corresponds to a magnitude of Mw 8.2.