The November 1960 Peru earthquake occurred offshore northern

Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...

on November 20 at . The magnitude of the earthquake was 6.75 by using the conventional surface-wave magnitude measurement within a shorter duration of ~20 s. However, there is a large discrepancy between the magnitudes in and in this earthquake. The discrepancy was caused from the earthquake's long source duration of about 130 s, and by calculating the

seismic moment Seismic moment is a quantity used by seismologists to measure the size of an earthquake. The scalar seismic moment M_0 is defined by the equation M_0=\mu AD, where *\mu is the shear modulus of the rocks involved in the earthquake (in pascal (unit) ...

, the magnitude would be 7.6 or 7.8, according to different sources. This earthquake belongs to a category of earthquakes with slow rupture velocities and potential of producing tsunamis larger than those expected from the moment magnitudes. A tsunami with a height of was triggered and struck Puerto Eten, Lambayeque Department. The tsunami caused damage along the coast of the Lambayeque Department. Three deaths were reported in Lambayeque Department. Thirteen deaths and 50 missing were reported in the Guañape Islands, La Libertad Department. The tsunami was also observed in

Hilo, Hawaii Hilo () is the largest settlement in and the county seat of Hawaii County, Hawaiʻi, United States, which encompasses the Island of Hawaiʻi, and is a census-designated place (CDP). The population was 44,186 according to the 2020 census. I ...

References

{{Earthquakes in Peru

1960 in Peru November 1960 in South America Tsunami earthquakes Earthquakes in Peru Tsunamis in Peru 1960 disasters in Peru

See also

References