2013 Bohol earthquake

2013 Bohol earthquake
The rubble of the Church of Our Lady of Light in Loon, Bohol, the oldest and one of the largest in the province
Epicentre
Epicentre
Epicentre
Epicentre
UTC time2013-10-15 00:12:32
ISC event609078498
USGS-ANSSComCat
Local dateOctober 15, 2013 (2013-10-15)
Local time8:12:31 PST[1]
Duration34 seconds[2]
MagnitudeMw 7.2
Depth12 km (7.5 mi)[1]
Epicenter9°52′48″N 124°07′01″E / 9.880°N 124.117°E / 9.880; 124.117[3]
FaultNorth Bohol Fault
TypeReverse[4]
Areas affectedPhilippines
Max. intensityPEIS VIII (Very destructive)
MMI IX (Violent)[5][3]
Peak acceleration0.7—0.8 g[6]
Landslides
  • Cebu: Aloguinsan, Argao, Boljoon[7]
  • Bohol: Alicia, Antequera, Balilihan, Bilar, Carmen, Clarin, Corella, Cortes, Danao, Dimiao, Lila, Loboc, Loon[7][8]
Aftershocks4,465 (122 felt) (as of December 31, 2013)
Casualties222 dead; 8 missing; 976 injured[7]

The 2013 Bohol earthquake occurred on October 15 at 8:12:31 PST in Bohol, an island province located in Central Visayas, Philippines.[9] The magnitude of the earthquake was recorded at Mw 7.2, with epicenter 6 kilometres (3.7 mi) S 24° W of Sagbayan, and its depth of focus was 12 kilometres (7.5 mi).[1][10] It affected the whole Central Visayas region, particularly Bohol and Cebu. The earthquake was felt in the whole Visayas area and as far as Masbate island in the north and Cotabato provinces in southern Mindanao.

According to official reports by the National Disaster Risk Reduction and Management Council (NDRRMC), 222 were reported dead, 8 were missing, and 976 people were injured. In all, more than 73,000 structures were damaged, of which more than 14,500 were destroyed.[7]

It was the deadliest earthquake in the Philippines in 23 years since the 1990 Luzon earthquake. The energy released by the quake was equivalent to 32 of the bombs dropped in Hiroshima.[11] Previously, Bohol was also hit by an earthquake on February 8, 1990 that damaged several buildings and caused a tsunami.[12][13]

On November 7, just three weeks after the earthquake, Super Typhoon Haiyan (Yolanda) struck the region. Although the storm's eye missed the area affected by the earthquake, it sent some 40,000 Boholanos still living in temporary shelters back to evacuation centers and disrupted relief efforts in the province.[14]

  1. ^ a b c Cite error: The named reference Phivolcs 1 was invoked but never defined (see the help page).
  2. ^ Carcamo, Dennis (October 15, 2013). "93 dead in Visayas quake". The Philippine Star. Retrieved October 15, 2013.
  3. ^ a b Cite error: The named reference USGS was invoked but never defined (see the help page).
  4. ^ Kobayashi 2014.
  5. ^ Villamil, Charm; Perez, Jeffrey; Cayabyab, Felomina. Earthquake intensity assessment and isoseismal map of the 2013 Mw7.2 Bohol Earthquake.
  6. ^ "The Mw7.2 15 October 2013 Bohol, Philippines Earthquake" (PDF). Emi-megacities.org. Archived from the original (PDF) on October 13, 2022. Retrieved November 25, 2021.
  7. ^ a b c d "SitRep No. 35 re Effects of Magnitude 7.2 Sagbayan, Bohol Earthquake" (PDF). National Disaster Risk Reduction and Management Council. November 3, 2013. Archived from the original (PDF) on December 14, 2013. Retrieved November 7, 2013.
  8. ^ "Massive extremely dangerous earthquake in Bohol, Philippines – At least 93 people killed, 167 injured, around 4 billion PHP damage expected". Earthquake Report. October 15, 2013. Archived from the original on November 26, 2013. Retrieved October 15, 2013.
  9. ^ Mangosing, Frances (October 15, 2013). "Death toll from Bohol quake jumps to 85". Philippine Daily Inquirer. Retrieved October 15, 2013.
  10. ^ Marquez, Bulilit (October 15, 2013). "Death toll in Philippines quake jumps to 93". Associated Press. Retrieved October 15, 2013.
  11. ^ Andrade, Jeannette I. (October 15, 2013). "Bohol earthquake strongest to hit Visayas and Mindanao in over 20 years". Philippine Daily Inquirer. Retrieved October 15, 2013.
  12. ^ Whaley, Floyd (October 15, 2013). "Major Earthquake Strikes Central Philippines". The New York Times. Retrieved October 15, 2013.
  13. ^ Marc Jayson Cayabyab (October 15, 2013). "Bohol quake as strong as 32 atomic bombs –Phivolcs". GMA News. Retrieved October 15, 2013.
  14. ^ Carmel Lois Matus (November 10, 2013). "For Boholanos: After super quake, a super typhoon". Philippine Daily Inquirer. Retrieved November 13, 2013.