  Guatemala City Tegucigalpa Managua San José  | |
| UTC time | 1982-06-19 06:21:58 |
|---|---|
| ISC event | 597450 |
| USGS-ANSS | ComCat |
| Local date | 19 June 1982 |
| Local time | 00:21:58 |
| Duration | 25 s (shaking felt)[1] |
| Magnitude | Ms 7.2 |
| Depth | 82 km (51 mi) |
| Epicenter | 13°19′N 89°20′W / 13.31°N 89.34°W |
| Type | Normal[2] |
| Areas affected | El Salvador |
| Total damage | $5 million[3] |
| Max. intensity | VII (Very strong)[3] |
| Landslides | Yes[4] |
| Casualties | 16–43 dead[2] |
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 7.2 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.
Preface edit
.[5]
Tectonic setting edit
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.[6]
Earthquake edit
The shock has been compared to the January 2001 El Salvador earthquake. Both shared similarities in location (offshore in the Pacific Ocean), focal mechanism (normal fault), and depth of focus. The type of damage was also much the same, though more destructive in the 2001 event. The town of Comasagua was hit hard and experienced significant effects during both.[7]
Intensity edit
The intensity in San Salvador reached VII (Very strong).[8][9] The most affected cities are San Salvador, Ahuachapán, Concepción de Ataco, Comasagua, San Miguel, San Pedro Nonualco, and San Juan Tepezontes.[10] 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.[11][12]
Damage edit
See also edit
References edit
- ^ 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
- ^ a b USGS (4 September 2009), PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey
- ^ a b National Geophysical Data Center / World Data Service (NGDC/WDS) (1972), Significant Earthquake Database, National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K
- ^ 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, August 1–6, 2004.
- ^ Rose, W. I.; Bommer, J. J.; Sandoval, C. A. (2004), "Natural hazards and risk mitigation in el Salvador: An introduction", Special Paper 375: Natural Hazards in el Salvador, vol. 375, pp. 1–4, doi:10.1130/0-8137-2375-2.1, ISBN 978-0-8137-2375-4
- ^ Martínez-Díaz, J. J.; Álvarez-Gómez, J. A.; Benito, B.; Hernández, D. (2004), "Triggering of destructive earthquakes in el Salvador" (PDF), Geology, 32: 65–68, doi:10.1130/G20089.1
- ^ 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): 391, doi:10.1016/S0267-7261(02)00024-6
- ^ http://wwwsoc.nii.ac.jp/jsnds/contents/jnds/23_2_1.pdf
- ^ isosistas. Snet.gob.sv (10 October 1986). Retrieved on 25 October 2011.
- ^ http://desastres.usac.edu.gt/documentos/pdf/spa/doc909/doc909-contenido.pdf
- ^ Significant Earthquakes of the World. Earthquake.usgs.gov (5 January 2010). Retrieved on 25 October 2011.
- ^ http://www.crid.or.cr/digitalizacion/pdf/spa/doc807/doc807-b.pdf
- ^ Ambraseys, N. N.; Adams, R. D. (2000), The Seismicity of Central America – A Descriptive Catalogue 1898–1995, Imperial College Press, p. 235, doi:10.1142/9781848160118_0001, ISBN 978-1860942440
- ^ M. A. Lara (1982), El Salvador earthquake June 19, 1982 (PDF), Mauricio A. Lara & Associates – Consulting Engineers
Further reading edit
- 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 edit
- The International Seismological Centre has a bibliography and/or authoritative data for this event.
- Earthquake kills 14 in Salvador – The New York Times