1941 Colima earthquake explained

1941 Colima earthquake
Timestamp:1941-04-15 19:09:56
Isc-Event:900764
Anss-Url:iscgem900764
Local-Time:13:09
Magnitude:7.7
Depth:35 km
Location:18.85°N -102.94°W
Countries Affected:Mexico
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.

The magnitude of this earthquake was put at Ms 7.7 or Mw 7.7.[4] The intensities were X (Extreme) in Colima, VIII (Severe) in Manzanillo,[5] and V (Moderate) in Mexico City.[6] Ninety people were reported dead. The cathedral of Colima was destroyed.[7] Many houses and public buildings in Colima, including the Federal Palace (Palacio federal) and the Hidalgo Theater (Teatro Hidalgo), were damaged.[8] [9] Of the 8,000 houses in the city of Colima, 900 or 2000 collapsed, according to different sources.[10]

This earthquake was an interplate earthquake between the Cocos Plate and the North American Plate.[11] It occurred in the Colima region of the Middle America Trench. This earthquake was very close to where the 1973 Colima earthquake occurred.[12] 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.

See also

Notes and References

  1. Kostoglodov . Vladimir . Ponce . Lautaro . Relationship between subduction and seismicity in the Mexican part of the Middle America Trench . Journal of Geophysical Research: Solid Earth . 10 January 1994 . 99 . B1 . 729–742 . 10.1029/93JB01556 . 1994JGR....99..729K .
  2. Santoyo . M. A. . Space-Time Clustering of Large Thrust Earthquakes along the Mexican Subduction Zone: An Evidence of Source Stress Interaction . Bulletin of the Seismological Society of America . 1 October 2005 . 95 . 5 . 1856–1864 . 10.1785/0120040185 . 2005BuSSA..95.1856S . 2433/193414 . 10.1.1.704.5130 .
  3. Nishenko . S. P. . Singh . S. K. . Conditional probabilities for the recurrence of large and great interplate earthquakes along the Mexican subduction zone . Bulletin of the Seismological Society of America . 1 December 1987 . 77 . 6 . 2095–2114 . 10.1.1.127.6570 .
  4. Book: International Handbook of Earthquake & Engineering Seismology . Part A, Volume 81A . Global seismicity: 1900–1999 . E. R. . Engdahl . A. . Vallaseñor . 2002 . https://earthquake.usgs.gov/data/centennial/centennial.pdf . . First . 978-0124406520 . 705.
  5. Singh . S. K. . Pacheco . J. F. . Alcantara . L. . Reyes . G. . Ordaz . M. . Iglesias . A. . Alcocer . S. M. . Gutierrez . C. . Valdes . C. . Kostoglodov . V. . Reyes . C. . Mikumo . T. . Quaas . R. . Anderson . J. G. . A Preliminary Report on the Tecoman, Mexico Earthquake of 22 January 2003 (Mw 7.4) and Its Effects . Seismological Research Letters . 1 May 2003 . 74 . 3 . 279–289 . 10.1785/gssrl.74.3.279 . 2003SeiRL..74..279S .
  6. Web site: Archived copy . 2011-07-24 . https://web.archive.org/web/20120328034901/http://desastres.usac.edu.gt/documentos/pdf/spa/doc4647/doc4647-contenido.pdf . 2012-03-28 . dead .
  7. Web site: Archived copy . 2011-07-23 . https://web.archive.org/web/20111007095949/http://www.cenapred.unam.mx/es/DocumentosPublicos/PDF/SerieImpacto/Impacto1.pdf . 2011-10-07 . dead .
  8. Web site: El Comentario / Periódico Oficial de la Universidad de Colima.
  9. http://culturacolima.gob.mx/espacios.php?o=teatrohidalgo{{Dead link|date=February 2019 |bot=InternetArchiveBot |fix-attempted=yes }}
  10. Web site: Archived copy . 2011-07-28 . https://web.archive.org/web/20120328063732/http://digeset.ucol.mx/tesis_posgrado/Pdf/JOSE_FRANCISCO_VENTURA_RAMIREZ.pdf . 2012-03-28 . dead .
  11. Web site: Archived copy . 2011-07-23 . dead . https://web.archive.org/web/20110614090122/http://www.gps.caltech.edu/uploads/File/People/kanamori/HKbssa87c.pdf . 2011-06-14 .
  12. Santoyo . Miguel A. . Mikumo . Takeshi . Quintanar . Luis . Faulting process and coseismic stress change during the 30 January, 1973, Colima, Mexico interplate earthquake (Mw=7.6) . Geofísica Internacional . September 2006 . 45 . 3 . 163–178 . 10.22201/igeof.00167169p.2006.45.3.203 . 2006GeofI..45..163S . free .

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