1960 Concepción earthquakes

Coordinates: 37°49′26″S 73°21′11″W / 37.824°S 73.353°W / -37.824; -73.353
Source: Wikipedia, the free encyclopedia.
The first 1960 Concepción earthquake
UTC-4
Magnitude8.1 Mw[1]
8.3 Ms[2][3][4]
Depth25.0 km (15.5 mi)[1]
Epicenter37°49′26″S 73°21′11″W / 37.824°S 73.353°W / -37.824; -73.353[1]
Areas affectedChile
Max. intensityMMI X (Extreme)[5]
Casualties125 dead

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.[6]

The first was on May 21 at 06:02

MS. This earthquake, which lasted 35 seconds, destroyed a third of the buildings in the city of Concepción.[8]

The earthquake effectively interrupted and ended Lota's coal miners march on Concepción where they demanded higher salaries.[9]

First earthquake intensity[5]
21 May at 6:02
UTC
earthquake
City
MMI
 Damage
Concepción
 IX 125 dead. A third of the buildings were destroyed.[8]
Talcahuano IX 65% of buildings were destroyed.
Coronel IX
Lota IX
Lebu X
The second 1960 Concepción earthquake
UTC-4
Magnitude7.1 Mw[10]
Depth25.0[10] km
EpicenterNahuelbuta National Park
37°46′30″S 73°01′02″W / 37.77500°S 73.01722°W / -37.77500; -73.01722[10]
Areas affectedConcepción, Arauco and Ñuble in Chile
Max. intensityMMI VII (Very strong)[10]

The second happened on May 22 at 06:30

UTC-4.[12]

The third 1960 Concepción earthquake
MS
Depth25 km [13]
EpicenterPurén
38°03′39.6″S 73°02′20.4″W / 38.061000°S 73.039000°W / -38.061000; -73.039000[13]
Areas affectedConcepción, Arauco and Ñuble in Chile

The third happened the same day at 14:56

MS or 7.8 Mw.[13] This earthquake happened 15 minutes before the 1960 Valdivia earthquake.[4]

See also

References

  1. ^ a b c d "M8.1 - Bio-Bio, Chile 1960-05-21 10:02:54 UTC". U.S. Geological Survey. USGS. Retrieved 1 June 2015.
  2. ^
    PMID 21527673
    .
  3. ^ a b c Servicio Sismológico Universidad de Chile, Sismos importantes o destructivos desde 1570 Archived 2012-06-29 at archive.today
  4. ^ a b c d SHOA. "Generalities". Archived from the original on 2011-07-09. Retrieved June 10, 2011. The sequence started with an earthquake magnitude Ms=7.5 at 10:02 GMT on May 21st, followed by another on May 22nd, magnitude Ms=7.8 at 18:55 GMT
  5. ^ a b Jean Pierre Rothe: The seismicity of the earth, 1953–1965. UNESCO, Paris 1969. (Abstract in the United States Geological Survey web site Archived 2011-08-06 at the Wayback Machine)
  6. doi:10.1111/j.1365-246X.1990.tb05673.x
    .
  7. doi:10.1785/0220190143
    .
  8. ^ a b Rudolph, William E. (1960). "Catastrophe in Chile". Geographical Review. 50 (4): 578–581.
    JSTOR 212311
    .
  9. ^ Reyes Herrera, Sonia E.; Rodríguez Torrent, Juan Carlos; Medina Hernández, Patricio (2014). "El sufrimiento colectivo de una ciudad minera en declinación. El caso de Lota, Chile". Horizontes Antropológicos (in Spanish). 20 (42).
  10. ^ a b c d e "M 7.1 - Bio-Bio, Chile". U.S. Geological Survey. USGS. Retrieved 19 November 2016.
  11. ^ "M 7.1 - Bio-Bio, Chile". U.S. Geological Survey. USGS. Retrieved 19 November 2016.
  12. ^ "M 6.8 - Bio-Bio, Chile". U.S. Geological Survey. USGS. Retrieved 19 November 2016.
  13. ^ a b c d "M 7.8 - Araucania, Chile". U.S. Geological Survey. USGS. Retrieved 19 November 2016.

External links

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