1999 Oaxaca earthquake
1999 Oaxaca earthquake is located in Oaxaca
1999 Oaxaca earthquake
1999 Oaxaca earthquake is located in Mexico
1999 Oaxaca earthquake
UTC time1999-09-30 16:31:15
ISC event1656664
USGS-ANSSComCat
Local dateSeptember 30, 1999
Local time11:31 am
Magnitude7.4 Mw
Depth61 km
Epicenter16°03′32″N 96°55′52″W / 16.059°N 96.931°W / 16.059; -96.931
Max. intensityVIII (Severe)
Casualties35 dead

The 1999 Oaxaca earthquake occurred on September 30 at 11:31 local time (16:31 UTC) in Oaxaca, Mexico, 60 km NNW of Puerto Ángel.[1] The epicenter was located near San Agustin Loxicha.[2] It had a magnitude of Mw 7.4.[3]

Earthquake

This was an intraplate earthquake in the Cocos Plate, with a normal-faulting mechanism. The fault plane was 90 km long and 45 km wide. The maximum slip was about 2.5 m, which was located about 20 and 40 km WNW of the hypocenter.[4][5] The maximum intensity reached MM VIII in southwestern Oaxaca, and could be felt strongly in Mexico City.[6]

Impact

The torrential rains and flooding preceding and following the temblor intensified the damage of this earthquake. Thirty-five people were reported dead.[7] The archeological site of the ancient Zapotec city of Monte Alban also suffered damage in this earthquake.[8]

See also

References

  1. ↑ "USGS Earthquake Hazards Program: Earthquake Report: OAXACA, MEXICO". Neic.usgs.gov. Archived from the original on October 21, 2011. Retrieved October 22, 2011.
  2. ↑ "The Mexico Earthquake, September 30, 1999". Mceer.buffalo.edu. September 30, 1999. Archived from the original on March 31, 2012. Retrieved October 22, 2011.
  3. ↑ "Significant Earthquakes of the World". Earthquake.usgs.gov. Archived from the original on November 25, 2011. Retrieved October 22, 2011.
  4. ↑ "Archived copy" (PDF). Archived from the original (PDF) on February 2, 2010. Retrieved August 28, 2010.{{cite web}}: CS1 maint: archived copy as title (link)
  5. ↑ Castro, R. R. (2005), "Stochastic Modeling of the 30 September 1999 Mw 7.5 Earthquake, Oaxaca, Mexico", Bulletin of the Seismological Society of America, 95 (6): 2259–2271, Bibcode:2005BuSSA..95.2259C, doi:10.1785/0120040145
  6. ↑ "CNN – Earthquake jolts Mexico City – September 30, 1999". CNN. Retrieved October 22, 2011.
  7. ↑ "Archived copy" (PDF). www.proteccioncivil.gob.mx. Archived from the original (PDF) on April 14, 2008. Retrieved January 14, 2022.{{cite web}}: CS1 maint: archived copy as title (link)
  8. ↑ "Quake Damaged Pre-hispanic Ruins, Archeological Sites – Chicago Tribune". Articles.chicagotribune.com. October 3, 1999. Retrieved October 22, 2011.
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