1941 Colima earthquake

1941 Colima earthquake
UTC time 1941-04-15 19:09:56
ISC event 900764
USGS-ANSS ComCat
Local date April 15, 1941 (1941-04-15)
Local time 13:09
Magnitude 7.7 Ms
Depth 35 km
Epicenter 18°51′N 102°56′W / 18.85°N 102.94°W / 18.85; -102.94
Areas affected Mexico
Max. intensity X (Extreme)
Casualties 90 killed

The 1941 Colima earthquake occurred on April 15 at 19:09 UTC (13:09 local time).[1][2][3] The epicenter was located in the State of Michoacán, Mexico.[4]

The magnitude of this earthquake was put at Ms 7.7 or Mw 7.7.[5] The intensities were X (Extreme) in Colima, VIII (Severe) in Manzanillo,[6] and V (Moderate) in Mexico City.[7] Ninety people were reported dead. The cathedral of Colima was destroyed.[8] Many houses and public buildings in Colima, including the Federal Palace (Palacio federal) and the Hidalgo Theater (Teatro Hidalgo), were damaged.[9][10] Of the 8,000 houses in the city of Colima, 900 or 2000 collapsed, according to different sources.[11]

This earthquake was an interplate earthquake between the Cocos Plate and the North American Plate.[12] It occurred in the Colima region of the Middle America Trench. This earthquake was very close to where the 1973 Colima earthquake occurred.[13] From the locally recorded time intervals between the arrival of the S wave and the P wave (S−P times) and from the felt intensities, it is suggested that the rupture zone of this earthquake was larger than the 1973 earthquake and may have extended into the rupture zone of the 1985 Michoacán earthquake.[3]

See also

References

  1. ↑ Kostoglodov, Vladimir; Ponce, Lautaro (1994), "Relationship between subduction and seismicity in the Mexican part of the Middle America Trench" (PDF), Journal of Geophysical Research: Solid Earth, American Geophysical Union, 99: 729–742, Bibcode:1994JGR....99..729K, doi:10.1029/93JB01556
  2. ↑ Santoyo, M. A (2005), "Space-Time Clustering of Large Thrust Earthquakes along the Mexican Subduction Zone: An Evidence of Source Stress Interaction" (PDF), Bulletin of the Seismological Society of America, Seismological Society of America, 95 (5): 1856, Bibcode:2005BuSSA..95.1856S, doi:10.1785/0120040185
  3. 1 2 Nishenko, S. P.; Singh, S. K. (1987), "Conditional probabilities for the recurrence of large and great interplate earthquakes along the Mexican subduction zone", Bulletin of the Seismological Society of America, Seismological Society of America, 77 (6): 2095–2114
  4. ↑ USGS, M7.8 Tecomán, Colima, Mexico Earthquake of 22 January 2003 (PDF), United States Geological Survey
  5. ↑ 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. 705. ISBN 978-0124406520.
  6. ↑ Singh, S. K.; Pacheco, J. F.; Alcántara, L.; Reyes, G.; Ordaz, M.; Iglesias, A.; Alcocer, S. M.; Gutierrez, G.; Valdés, C.; Kostoglodov, V.; Reyes, C.; Mikumo, T.; Quaas, R.; Anderson, J. G. (2003), "A Preliminary Report on the Tecomán, Mexico Earthquake of 22 January 2003 (Mw 7.4) and Its Effects", Seismological Research Letters, Seismological Society of America, 74 (3): 279, doi:10.1785/gssrl.74.3.279
  7. ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2012-03-28. Retrieved 2011-07-24.
  8. ↑ http://www.cenapred.unam.mx/es/DocumentosPublicos/PDF/SerieImpacto/Impacto1.pdf
  9. ↑ http://elcomentario.ucol.mx/
  10. ↑ http://culturacolima.gob.mx/espacios.php?o=teatrohidalgo
  11. ↑ http://digeset.ucol.mx/tesis_posgrado/Pdf/JOSE_FRANCISCO_VENTURA_RAMIREZ.pdf
  12. ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2011-06-14. Retrieved 2011-07-23.
  13. ↑ http://scielo.unam.mx/pdf/geoint/v45n3/v45n3a2.pdf
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