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The 1942 Peru earthquake occurred on August 24 at and was located near the border of the departments of Ica and
Arequipa Arequipa (; Aymara and qu, Ariqipa) is a city and capital of province and the eponymous department of Peru. It is the seat of the Constitutional Court of Peru and often dubbed the "legal capital of Peru". It is the second most populated cit ...
,
Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...
. It had a magnitude of 8.2 or 8.4.


Earthquake

This is a megathrust earthquake which ruptured part of the boundary between the
Nazca Plate The Nazca Plate or Nasca Plate, named after the Nazca region of southern Peru, is an oceanic tectonic plate in the eastern Pacific Ocean basin off the west coast of South America. The ongoing subduction, along the Peru–Chile Trench, of the ...
and the
South American Plate The South American Plate is a major tectonic plate which includes the continent of South America as well as a sizable region of the Atlantic Ocean seabed extending eastward to the African Plate, with which it forms the southern part of the Mi ...
. In this area, the Nazca Plate is subducting beneath the South America Plate with a convergence vector of about 7.6 cm/yr. Much of the rupture zone of the 1942 earthquake overlapped with that of the 1996 Nazca earthquake. The rupture zone of the 1942 earthquake was about 40 km longer than that of the 1996 earthquake. The epicenter of the 1942 earthquake was very close to, but slightly southeast of, that of the 1996 earthquake. The energy released by the 1942 earthquake was about 2.5×1017 Nm.


Damage

The earthquake caused 30 deaths and 25 injuries. Building damage was noteworthy in the epicentral area. About 30% of the buildings in the city of Nazca were ruined. There were slides in the hills. The intensity reached IX (Violent).


Tsunami

This earthquake triggered a tsunami. In Callao, the amplitude of the oscillations of the tsunami was 1.6 m. In Lomas, the sea receded more than 200 m, and then it flooded the settlement with injuries reported.http://desastres.unanleon.edu.ni/pdf2/2005/enero/parte1/pdf/spa/doc9644/doc9644-b5.pdf


See also

*
List of earthquakes in 1942 This is a list of earthquakes in 1942. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the ...
*
List of earthquakes in Peru Earthquakes in Peru are common occurrences as the country is located in a seismic zone. The interface between the Nazca and South American tectonic plates is located near the Peruvian coast. The South American Plate is moving over the Nazca Plate ...


References


External links

* {{Earthquakes in Peru Peru earthquake, 1942 Megathrust earthquakes in Peru 1942 tsunamis 1942 in Peru 1942 disasters in Peru