1999 Oaxaca earthquake

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] The maximum intensity reached MM VIII in southwestern Oaxaca, and could be felt strongly in Mexico City.[4] The torrential rains preceding and following the temblor intensified the damage of this earthquake. Thirty-five people were reported dead.[5] The archeological site of the ancient Zapotec city of Monte Alban also suffered damage in this earthquake.[6] 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.[7][8]

1999 Oaxaca earthquake
UTC time1999-09-30 16:31:15
ISC event1656664
USGS-ANSSComCat
Local dateSeptember 30, 1999
Local time11:31
Magnitude7.4 Mw
Depth61 km
Epicenter16.059°N 96.931°W / 16.059; -96.931
Max. intensityVIII (Severe)
Casualties35

See also

References
  1. "USGS Earthquake Hazards Program: Earthquake Report: OAXACA, MEXICO". Neic.usgs.gov. Retrieved October 22, 2011.
  2. "The Mexico Earthquake, September 30, 1999". Mceer.buffalo.edu. September 30, 1999. 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. "CNN – Earthquake jolts Mexico City – September 30, 1999". CNN. Retrieved October 22, 2011.
  6. "Quake Damaged Pre-hispanic Ruins, Archeological Sites – Chicago Tribune". Articles.chicagotribune.com. October 3, 1999. Retrieved October 22, 2011.
  7. "Archived copy" (PDF). Archived from the original (PDF) on February 2, 2010. Retrieved August 28, 2010.CS1 maint: archived copy as title (link)
  8. 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
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