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November 1960 Peru earthquake

Earthquake of magnitude 6.7 to 7.8

Field	Value
title	November 1960 Peru earthquake
local-date	November 20, 1960
local-time	17:02
timestamp	1960-11-20 22:01:57
anss-url	iscgem880820
isc-event	880820
map2	{{Location map+	Peru
AlternativeMap	Peru physical map.svg
{{Location map~	Peru	lat	-12.04	long=-77.03	label=Lima	position=left		label_size=120	mark=Blue pog.svg}}
{{Location map~	Peru	lat	-18.48	long=-70.33	label=Arica	position=right		label_size=120	mark=Blue pog.svg}}
{{Location map~	Peru	lat	-6.7	long=-80.62	position=left		marksize=45	mark=Bullseye1.png}}
relief	yes
width	250
float	right
caption	}}
magnitude	7.6 or 7.8
depth	35 km
location
countries affected	Peru
tsunami	Yes
intensity	Felt
casualties	66 dead, 2 injured

| local-date = November 20, 1960 | local-time = 17:02 | anss-url = iscgem880820 | isc-event = 880820

The November 1960 Peru earthquake occurred offshore northern Peru on November 20 at 17:02 local time. 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, 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 9 m 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.

References

"Significant Earthquake Information". NOAA National Centers for Environmental Information.
"Tsunami Event Information". NOAA National Centers for Environmental Information.
"Anomalous Earthquake Ruptures at Shallow Depths on Subduction Zone Megathrusts". pmc.ucsc.edu.
(1990). "The November 20,1960 Peru Tsunami Earthquake: Source mechanism of a slow event". Geophysical Research Letters.
(2010). "Source model of the 2007 Mw 8.0 Pisco, Peru earthquake: Implications for seismogenic behavior of subduction megathrusts". Journal of Geophysical Research.
(1972). "Comments for the Tsunami Event".
(2002). "International Handbook of Earthquake & Engineering Seismology". [[Academic Press]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1960-earthquakes 1960s-tsunamis 1960-in-peru november-1960-in-south-america tsunami-earthquakes earthquakes-in-peru tsunamis-in-peru 1960-disasters-in-peru

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