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1982 El Salvador earthquake

Guatemala CityTegucigalpaManaguaSan José
UTC time	1982-06-19 06:21:58
ISC event	597450
USGS-ANSS	ComCat
Local date	19 June 1982 (1982-06-19)
Local time	00:21:58
Duration	25 s (shaking felt)
Magnitude	Mw 7.3
Depth	73 km (45 mi)
Epicenter	13°20′N 89°23′W / 13.33°N 89.39°W / 13.33; -89.39
Type	Normal
Areas affected	El Salvador
Total damage	$5 million
Max. intensity	MMI VII (Very strong)
Landslides	Yes
Casualties	16–43 dead

The 1982 El Salvador earthquake occurred southeast of San Salvador on 19 June at 00:21 local time (06:21 UTC). This undersea earthquake struck offshore in the Pacific Ocean and had a surface wave magnitude of 7.3 and a maximum Mercalli intensity of VII (Very strong). Occurring adjacent to a subduction zone at the Middle America Trench, this normal-slip shock left at least 16 and as many as 43 people dead, and many injured, and also inflicted $5 million in damage.

Tectonic setting

Near the Salvadorian coast, the Cocos plate is subducting beneath the Caribbean plate at the Middle America Trench. This earthquake was an intra-slab, normal-slip subduction earthquake in the subducting plate. The subduction zone and a local system of faults along the volcanic chain are two major sources of the earthquakes in El Salvador.

Earthquake

The mechanism of this earthquake had many similarities with the El Salvador earthquake of 13 January 2001.

Intensity

The intensity in San Salvador reached VII (Very strong). The most affected cities are San Salvador, Ahuachapán, Concepción de Ataco, Comasagua, San Miguel, San Pedro Nonualco, and San Juan Tepezontes. This earthquake could be felt in Guatemala, Honduras, Nicaragua, and Costa Rica, with intensities V (Moderate) in Guatemala City, Guatemala, IV (Light) in Tegucigalpa, Honduras, V in Managua, Nicaragua, and III (Weak) in San José, Costa Rica.

See also

• List of earthquakes in El Salvador

References

1. White, R. A.; Ligorría, J. P.; Cifuentes, I. L. (2004), "Seismic history of the Middle America subduction zone along el Salvador, Guatemala, and Chiapas, Mexico: 1526–2000", Special Paper 375: Natural Hazards in el Salvador, vol. 375, pp. 379–396, doi:10.1130/0-8137-2375-2.379, ISBN 978-0-8137-2375-4
2. "M 7.3 – 18 km SSW of La Libertad, El Salvador". United States Geological Survey. Retrieved 6 February 2022.
3. ^ PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey, 4 September 2009
4. ^ National Geophysical Data Center / World Data Service (NGDC/WDS) (1972), Significant Earthquake Database (Data Set), National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K
5. López, M.; Bommer, J.; Méndez, P. (2004). The Seismic Performance of Bahareque Dwellings in El Salvador (PDF). 13th World Conference on Earthquake Engineering, Vancouver, B.C., Canada, 1–6 August 2004.
6. Martínez-Díaz, J. J.; Álvarez-Gómez, J. A.; Benito, B.; Hernández, D. (2004), "Triggering of destructive earthquakes in el Salvador" (PDF), Geology, 32 (1): 65–68, Bibcode:2004Geo....32...65M, doi:10.1130/G20089.1
7. Bommer, J. J.; Benito, M. B.; Ciudad-Real, M.; Lemoine, A.; López-Menjı́Var, M. A.; Madariaga, R.; Mankelow, J.; Méndez De Hasbun, P.; Murphy, W.; Nieto-Lovo, M.; Rodrı́Guez-Pineda, C. E.; Rosa, H. (2002), "The el Salvador earthquakes of January and February 2001: Context, characteristics and implications for seismic risk" (PDF), Soil Dynamics and Earthquake Engineering, 22 (5): 389–418, Bibcode:2002SDEE...22..389B, doi:10.1016/S0267-7261(02)00024-6, archived from the original (PDF) on 8 October 2011
8. isosistas. Snet.gob.sv (10 October 1986). Retrieved 25 October 2011.
9. "Archived copy" (PDF). Archived from the original (PDF) on 21 July 2011. Retrieved 30 September 2010.{{cite web}}: CS1 maint: archived copy as title (link)
10. Significant Earthquakes of the World Archived 4 December 2009 at the Wayback Machine. Earthquake.usgs.gov (5 January 2010). Retrieved 25 October 2011.
11. "Archived copy" (PDF). Archived from the original (PDF) on 18 July 2011. Retrieved 30 September 2010.{{cite web}}: CS1 maint: archived copy as title (link)

Further reading

• Ministerio de Obras Públicas; Centro de Investigaciones Geotécnicas; Departamento de Sismología (1982), Informe técnico sobre aspectos sismológicos del terremoto en El Salvador, del 19 de junio de 1982, Documento 00158 (in Spanish)

External links

• The International Seismological Centre has a bibliography and/or authoritative data for this event.
• Earthquake kills 14 in Salvador – The New York Times

• 1982 in El Salvador
• Earthquakes in El Salvador
• 1982 earthquakes
• June 1982 events in North America