1928 Chachapoyas earthquake

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1928 Chachapoyas earthquake
1928 Chachapoyas earthquake is located in Peru
1928 Chachapoyas earthquake
UTC time 1928-05-14 22:15:04
ISC event 908668
Local date May 14, 1928
Local time 17:14
Magnitude 7.2 Mw [1]
Depth 35 km (22 mi) [1]
Epicenter 5°16′S 78°34′W / 5.26°S 78.56°W / -5.26; -78.56 [1]
Areas affected Peru
Max. intensity X (Extreme) [1]
Aftershocks 6.9 Ms July 18 at 19:05 UTC [2]
Casualties 25

The 1928 Chachapoyas earthquake occurred on May 14 at 17:14 local time.[3] It had a magnitude of Mw 7.2,[1] Ms 7.3,[4] or ML 7.3. Chachapoyas, Peru was almost completely destroyed. A landslide in Pinpincos caused the death of 25 people.[5][6] Many houses were damaged in Machala, Ecuador.[7] The maximum intensity was X (Extreme) on the Mercalli intensity scale.[8] The earthquake could be felt in Lima. It could also be felt in Ecuador, Brazil, and Colombia.


A strong aftershock occurred on July 18, 1928, at 14:05 local time (19:05 UTC).[9] Some houses which had already been damaged in the main shock collapsed.[3]

See also[edit]


  1. ^ a b c d e Engdahl, E. R.; Vallaseñor, A. (2002). "Global seismicity: 1900–1999". International Handbook of Earthquake & Engineering Seismology (PDF). Part A, Volume 81A (First ed.). Academic Press. p. 675. ISBN 978-0124406520. 
  2. ^ USGS (September 4, 2009), PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey 
  3. ^ a b "Historia de los Sismos mas Notables Occurridos en El Peru (1513–1974)" (PDF). p. 51. (in Spanish)
  4. ^ Hurtado, Jorge; Chang, Luis (2005). “Vulnerabilidad Sismica Estructural Y Efectos de Sitio" (PDF). XVII Simposio. CISMID. (in Spanish)
  5. ^ Hurtado, Jorge; Change, Luis (2005). "Mapa de Areas de Deslizamientos por Sismos en El Peru" (PDF). Universidad Nacional de Ingeniería, Lima – Perú. (in Spanish)
  6. ^ "II. Estudio de Caso de los Desastres del Alto Mayo, Peru, de 1990 y 1991" (PDF). p. 7–19. (in Spanish)
  7. ^ "Línea de Tiempo". Igepn.edu.ec. Retrieved 2012-08-17. 
  8. ^ "Banco de Datos de Mapas de Isosistas en El Peru" (PDF). FIC-University National de Ingenieria. (in Spanish)
  9. ^ "Historia de los Sismos mas Notables Occurridos en El Peru (1513–1974)" (PDF). (in Spanish)

External links[edit]