1996 Nazca earthquake

The 1996 Nazca earthquake occurred on November 12 at 16:59 UTC (11:59 local time).[1] The earthquake was located offshore near Nazca, Peru.[2] It has a magnitude of Mw 7.5. Fourteen people were reported dead. Four-thousand houses collapsed and 11,000 were partially damaged. Nazca and Acarí were the most affected cities. Liquefaction was observed in the bed of the Yauca River. The intensity was VIII (Severe) in Nazca. A tsunami was triggered by this earthquake. The recorded peak-to-trough heights of the tsunami were 25 cm in Callao, Peru and 35 cm in Arica, Chile.

1996 Nazca earthquake
UTC time1996-11-12 16:59:45
ISC event996809
USGS-ANSSComCat
Local date12 November 1996 (1996-11-12)
Local time11:59:45 PET
Magnitude7.5 Mw
Depth33 km
Epicenter14.993°S 75.675°W / -14.993; -75.675
Areas affectedPeru
Max. intensityVIII (Severe)
Casualties14

In this area, the Nazca Plate is subducting beneath the South American Plate. This earthquake occurred at the plate interface and is associated with the subduction of the 1.5 km high Nazca Ridge beneath the South American plate.[3] This was a complex event, and there were at least two larger events occurring between 18 and 30 seconds after the onset.[4] This earthquake may have ruptured part of the rupture zone of the earthquake of August 24, 1942.[5]

References
  1. "Archived copy" (PDF). Archived from the original (PDF) on 2012-02-26. Retrieved 2012-02-05.CS1 maint: archived copy as title (link)
  2. Associated Press (13 November 1996). "Powerful Earthquake In Peru Kills at Least 15". The New York Times.
  3. "UNAVCO Highlights | UNAVCO" (PDF).
  4. "Archived copy". Archived from the original on 2010-09-01. Retrieved 2010-09-01.CS1 maint: archived copy as title (link)
  5. Swenson, J. L.; Beck, S. L. (1999), "Source Characteristics of the 12 November 1996 M w 7.7 Peru Subduction Zone Earthquake" (PDF), Pure and Applied Geophysics, 154 (3–4): 731–751, doi:10.1007/s000240050250

Further reading
  • Chatelain, J.-L.; Guillier, B.; Gueguen, P.; Bondoux, F. (1997), "The Mw 7.7 Nasca (Peru) Earthquake, November 12, 1996: A Repetition of the 1942 Event?", Seismological Research Letters, 68 (6): 917–922, doi:10.1785/gssrl.68.6.917
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