The 1942 Guatemala earthquake occurred at 17:37 local time on August 6 and had ratings of 7.7 on the moment magnitude scale and 7.9 on the surface wave magnitude scale. The epicenter was located off the southern coast of Guatemala,[4] and it was one of the strongest earthquakes ever recorded there.
The earthquake caused widespread damage in the west-central highlands of Guatemala. Thirty-eight people died in the earthquake. Landslides caused by the combination of the earthquake and the heavy seasonal rains destroyed roads, the Inter-American Highway, and telegraph lines. In Tecpán, in the department of Chimaltenango, more than 60% of the houses were demolished. Damage was reported in some buildings in Antigua Guatemala, including the Palacio de Los Capitanes Generales and some catholic churches.[5][6] The earthquake could also be felt strongly in Mexico and El Salvador.[7]
This earthquake was a lower crustal intraplate earthquake with a compressional focal mechanism.[3][8][page needed] Tensional activity has been dominant along the down-dip edge along the 1942 rupture zone.[9] It was estimated that earthquakes near the Middle America Trench with magnitudes of about 7.5~8.0 occurred at intervals of 94 ± 54 yrs in southwestern Guatemala. Such historical earthquakes included the earthquakes in 1765, 1902, and 1942.[10]
^Cite error: The named reference global was invoked but never defined (see the help page).
^Dmowska & Lovison 1988, p. 657
^ abCite error: The named reference Astiz_p41 was invoked but never defined (see the help page).
^Monzón-Despang, Héctor (February 1996), La construcción y el uso del terreno en Guatemala : Su vulnerabilidad sísmica(PDF), Asociacion Guatemalteca de Ingenieros Estrucurales, pp. 107–121, retrieved August 3, 2012[permanent dead link]
^ABC (August 11, 1942). "Mundo Hispanoamericano – Fuerte seísmo en Guatemala. Ocho muertos y cuarenta heridos". ABC. p. 17. Retrieved August 3, 2012.
^"Sismología". Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología. Retrieved August 3, 2012.
^"Historic Earthquakes — Guatemala, 1942 August 06 23:36 UTC". United States Geological Survey. Archived from the original on 2016-04-30. Retrieved August 3, 2012.
^Dmowska & Lovison 1988
^Lay, Thorne; Astiz, Luciana; Kanamori, Hiroo; Christensen, Douglas (1989). "Temporal variation of large intraplate earthquakes in coupled subduction zones" (PDF). Physics of the Earth and Planetary Interiors. 54 (3–4). Elsevier: 273. Bibcode:1989PEPI...54..258L. doi:10.1016/0031-9201(89)90247-1. hdl:2027.42/27966.
^White, Randall A.; Ligorría, Juan Pablo; Cifuentes, Ines Lucia (2004). "Seismic history of the Middle America subduction zone along El Salvador, Guatemala, and Chiapas, Mexico: 1526–2000". GSA Special Papers. 375. Geological Society of America: 379–396. doi:10.1130/0-8137-2375-2.379. ISBN 978-0-8137-2375-4.
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