1990 Luzon earthquake

1990 Luzon earthquake
The collapsed Hyatt Terraces Baguio Hotel after the earthquake in Baguio
UTC time1990-07-16 07:26:36
ISC event362868
USGS-ANSSComCat
Local dateJuly 16, 1990 (1990-07-16)
Local time16:26:36 local time
Duration45 seconds
Magnitude7.7 Mw[1]
7.8 Ms[2]
Depth25.1 km (15.6 mi)[1]
Epicenter15°40′44″N 121°10′19″E / 15.679°N 121.172°E / 15.679; 121.172[1]
TypeStrike-slip[3]
Areas affectedCentral Luzon
National Capital Region
Cordillera Administrative Region
Bicol Region
Philippines
Max. intensityMMI IX (Violent)[4]
PEIS VIII (Very destructive)[2]
Casualties1,621 dead
3,513 injured
321 missing
126,035 displaced[5]

The 1990 Luzon earthquake occurred on July 16 at 4:26 p.m. (PDT) or 3:26 p.m. (PST) on the densely populated island of Luzon in the Philippines. The shock had a surface-wave magnitude of 7.8 and produced a 125 km-long ground rupture that stretched from Dingalan, Aurora to Kayapa, Nueva Vizcaya. The event was a result of strike-slip movements along the Philippine Fault and the Digdig Fault within the Philippine fault system. The earthquake's epicenter was near the town of Rizal, Nueva Ecija, northeast of Cabanatuan.[6] An estimated 1,621 people were killed,[7][8] most of the fatalities located in Central Luzon and the Cordillera region.

  1. ^ a b c Cite error: The named reference USGS was invoked but never defined (see the help page).
  2. ^ a b "1990 July 16 Ms7.8 Luzon Earthquake". Philippine Institute of Volcanology and Seismology. Retrieved February 21, 2013.
  3. ^ Cite error: The named reference PAGER-CAT was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference NGDC was invoked but never defined (see the help page).
  5. ^ Remembering the 1990 Luzon quake. CNN Philippines. Archived from the original on January 17, 2022. Retrieved January 17, 2022 – via YouTube.
  6. ^ "The July 16 Luzon Earthquake: A Technical Monograph". Inter-Agency Committee for Documenting and Establishing Database on the July 1990 Earthquake. Philippine Institute of Volcanology and Seismology. 2001. Archived from the original on September 7, 2008. Retrieved January 7, 2009.
  7. ^ The World Almanac and Book of Facts 2008: 140th Anniversary Edition. United States: World Almanac Education Group Inc. 2008. p. 305. ISBN 978-1-60057-072-8.
  8. ^ John W. Wright, ed. (2008). The New York Times 2008 Almanac. United States: Penguin Group. pp. 753. ISBN 978-0-14-311233-4.