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1960 Concepción earthquakes

Field	Value
title	The first 1960 Concepción earthquake
image
map
pushpin_map
map2	{{Location map	South America#Chile
relief	yes
lat	-37.824
long	-73.353
mark	Bullseye1.png
marksize	40
position	bottom
width	250
float	right
location
timestamp	1960-05-21 10:02
anss-url	iscgem879106
isc-event	879106
local-date
local-time	6:02 AM UTC-4
magnitude	8.1
8.3 Ms{{cite journal
title	The 2010 Mw 8.8 Maule Megathrust Earthquake of Central Chile, Monitored by GPS
author	Vigny, C.
author2	Socquet, A.
author3	Peyrat, S.
author4	Ruegg, J.C.
author5	Métois, M.
author6	Madariaga, R.
author7	Morvan, S.
author8	Lancieri, M.
author9	Lacassin, R.
author10	Campos, J.
name-list-style	amp	journal=Science	volume=332	number=6036	pages=1417–21	year=2011	doi=10.1126/science.1204132	display-authors=etal	pmid=21527673	bibcode=2011Sci...332.1417V	doi-access=free
}}</ref><ref name	"uch2" /
intensity
depth	25.0 km
casualties	125 dead
countries affected	Chile

| anss-url = iscgem879106 | isc-event = 879106 | local-date = | local-time = 6:02 AM UTC-4 8.3 Ms{{cite journal |name-list-style=amp|journal=Science|volume=332|number=6036|pages=1417–21|year=2011|doi=10.1126/science.1204132|display-authors=etal|pmid=21527673|bibcode=2011Sci...332.1417V|doi-access=free

The 1960 Concepción earthquakes were a succession of three destructive earthquakes that happened between 21 and 22 May 1960. They formed part of the foreshock sequence for the 1960 Valdivia earthquake, the largest recorded earthquake in history.

The first was on May 21 at 06:02 UTC-4. Its epicenter was near Cañete, Arauco Province, Chile, and its magnitude was 8.1 or 8.3MW and 7.3 or 7.5MS. This earthquake, which lasted 35 seconds, destroyed a third of the buildings in the city of Concepción.

The earthquake effectively interrupted and ended Lota's coal miners march on Concepción where they demanded higher salaries.

21 May at 6:02 UTC earthquake	City	MMI
Concepción	IX	125 dead. A third of the buildings were destroyed.
Talcahuano	IX	65% of buildings were destroyed.
Coronel	IX
Lota	IX
Lebu	X

| anss-url = iscgem879127 | isc-event = 879127 | local-date = | local-time = 06:30 AM UTC-4

The second happened on May 22 at 06:30 UTC-4. Its epicenter was in the Nahuelbuta National Park, Malleco Province, Chile, and its magnitude was 7.1 Mw. It was followed by a 6.8 Mw earthquake at 06:32 UTC-4.

| anss-url = official19600522185602_30 | isc-event = 879134 | local-date = | local-time = 14:56 PM UTC-4

The third happened the same day at 14:56 UTC-4. Its epicenter was near Purén, Malleco Province, Chile and its magnitude was 7.8 MS or 7.8 Mw.

References

"M8.1 – Bio-Bio, Chile 1960-05-21 10:02:54 UTC". United States Geological Survey.
Barrientos S.E.. (1990). "The 1960 Chile earthquake: inversion for slip distribution from surface deformation". Geophysical Journal International.
Servicio Sismológico Universidad de Chile, [http://ssn.dgf.uchile.cl/terremoto.html Sismos importantes o destructivos desde 1570] {{webarchive. link. (2012-06-29)
Ojeda J.. (2020). "The 21 May 1960 M w 8.1 Concepción earthquake: A deep megathrust foreshock that started the 1960 central-south Chilean seismic sequence". Seismological Research Letters.
(2014). "El sufrimiento colectivo de una ciudad minera en declinación. El caso de Lota, Chile". Horizontes Antropológicos.
Jean Pierre Rothe: ''The seismicity of the earth, 1953–1965''. [[UNESCO]], Paris 1969. ([https://earthquake.usgs.gov/earthquakes/world/events/1960_05_22_articles.php Abstract in the United States Geological Survey web site] {{Webarchive. link. (2011-08-06 ))
"M 7.1 – Bio-Bio, Chile". United States Geological Survey.
"M 7.1 – Bio-Bio, Chile". United States Geological Survey.
"M 6.8 – Bio-Bio, Chile". United States Geological Survey.
"M 7.8 – Araucania, Chile". United States Geological Survey.
SHOA. "Generalities".

Info: Wikipedia Source

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