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Encyclopedia > 1990 Luzon earthquake
Map of Nueva Ecija showing the location of Cabanatuan City.

The 1990 Luzon earthquake occurred on Monday, July 16, 1990, at 4:26 PM local time in the Philippines. The densely populated island of Luzon was struck by an earthquake with a 7.8 Ms (surface-wave magnitude). The earthquake produced a 125 km-long ground rupture that stretched from Dingalan, Aurora to Kayapa, Nueva Vizcaya as a result of strike-slip movements along the Philippine Fault Zone and the Digdig Fault. The earthquake epicenter was placed at 15º 42' N and 121º 7' E near the town of Rizal, Nueva Ecija, northeast of Cabanatuan City.[1] Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Nueva Ecija is a landlocked province of the Philippines located in the Central Luzon region. ... The City of Cabanatuan is a first class city in the province of Nueva Ecija, Philippines. ... is the 197th day of the year (198th in leap years) in the Gregorian calendar. ... Year 1990 (MCMXC) was a common year starting on Monday (link displays the 1990 Gregorian calendar). ... The Richter magnitude scale, or more correctly local magnitude ML scale, assigns a single number to quantify the amount of seismic energy released by an earthquake. ... Dingalan is a municipality in the province of Aurora in the Philippines. ... Kayapa is a 4th class municipality in the province of Nueva Vizcaya, Philippines. ... Rizal is a 3rd class municipality in the province of Nueva Ecija, Philippines. ... The City of Cabanatuan is a first class city in the province of Nueva Ecija, Philippines. ...


The earthquake caused damage in an area of about 20,000 square kilometers, from northwest of Manila through the Central Luzon and into the mountains of the Cordillera Administrative Region. About 1,600 people were killed, mostly in the central Luzon and Cordillera region. This was one of the deadliest and costliest natural disasters in the Philippines. Nickname: Motto: Linisin Ikarangal Maynila Map of Metro Manila showing the location of Manila Coordinates: 14°35 N 121° E Country Region Districts 1st to 6th districts of Manila Barangays 897 Incorporated (city) June 10, 1574 Government  - Mayor Alfredo Lim (2007-2010; GO)  - Vice Mayor Isko Moreno (AM/PDP-Laban... Central Luzon region contains the largest plain of the Philippines, and produces most of the countrys rice supply. ... The Cordillera Administrative Region (CAR) of the Philippines consists of the provinces of Abra, Benguet, Ifugao, Kalinga, Mountain Province and Apayao. ...


Baguio City, a popular tourist destination, was one of the hardest hit with the number of deaths estimated at around 1000. Several private and public buildings were severely damaged or destroyed, many of which were hotels. One of the buildings destroyed was a five-star Hyatt Hotel; its 12 story section collapsed over the lobby area killing about 50 people. Nevada Hotel, another five-star hotel, was damaged beyond repair when the lower level collapsed, killing about 40 people. Many affected residents, who lost their homes or their place to stay, ended up setting up tents in public parks, such as in Burnham Park, or in the streets. Kennon Road, one of the major routes from Manila to Baguio City, was shut down due to severe landslides. Nickname: Benguet Province map locating Baguio City Coordinates: , Country Region Province Benguet Barangays 129 Congressional Districts 1 Incorporated (city) September 1, 1909 Government  - Congressman Mauricio Domogan (Elect)  - Mayor Reinaldo Bautista, Jr. ... A hotel is an establishment that provides lodging, usually on a short-term basis. ... Hyatt is a hotel chain that operates hotels on all six continually inhabited continents on Earth. ... This article does not cite its references or sources. ... Kennon Road connects Baguio City with the town of Rosario, La Union in the Philippines. ... Nickname: Motto: Linisin Ikarangal Maynila Map of Metro Manila showing the location of Manila Coordinates: 14°35 N 121° E Country Region Districts 1st to 6th districts of Manila Barangays 897 Incorporated (city) June 10, 1574 Government  - Mayor Alfredo Lim (2007-2010; GO)  - Vice Mayor Isko Moreno (AM/PDP-Laban...


For the first 48 hours after the earthquake, the city was isolated from the rest of the country. Electric, water, and communication lines were destroyed. The city was inaccessible by land because of landslides and inaccessible by air, except to helicopters, because of damage at the airport. Food and fuel were scarce. Because hospital buildings were damaged, patients were relocated under tents set up in open spaces in front of hospitals. Damage to homes and the occurrence of many aftershocks caused most residents to set up camps in open spaces in the city. Three days after the earthquake, a main road leading to the city was cleared to enable delivery of supplies. .[2]


Cabanatuan City has many concrete buildings, most of which are three stories high. The only building that collapsed during the earthquake was Philippine Christian College, the tallest building in the city with six floors. The city suffered about 363 casualties (including 274 students trapped in the collapsed Philippine Christian College), with 154 of them dead.


In Dagupan City, About 90 buildings in the city were damaged, and about 20 collapsed. Some structures sustained damage because liquefaction caused buildings to sink as much as 1 meter (39 inches). The earthquake caused a decrease in the elevation of the city and several areas were flooded. The city suffered 64 casualties of which 47 survived and 17 died. Most injuries were sustained during stampedes at a university building and a theater. Infobox Philippine city | infoboxtitle = City of Dagupan | locatormapfile = Ph_locator_pangasinan_dagupan. ...


Five municipalities in La Union were affected: Agoo, Aringay, Caba, Santo Tomas, and Tubao with a combined population of 132,208. Many buildings collapsed or were severely damaged. 2387 families were displaced when two coastal villages sank. The province suffered 493 casualties and 32 of them died. La Union is a province of the Philippines located in the Ilocos Region in Luzon. ... Agoo is a 2nd class municipality in the province of La Union, Philippines. ... Aringay is a 3rd class municipality in the province of La Union, Philippines. ... Caba is a small municipality in the province of La Union, in the Philippines. ... Santo Tomas is a 4th class municipality in the province of La Union, Philippines. ... Tubao is a 4th class municipality in the province of La Union, Philippines. ...

Contents

Impact

Geology

Aftermath and reconstruction

Bibliography

  • 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). Retrieved on 2007-07-16.

This is the example of eruption warning The Philippine Institute of Volcanology and Seismology (Filipino: Suriang Pilipino ng Bulkanolohiya at Sesmolohiya, abbreviated as PHILVOLCS) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes and tsunamis, as well as other specialized information and services primarily... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 197th day of the year (198th in leap years) in the Gregorian calendar. ...

References

  1. ^ 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). Retrieved on 2007-07-16.
  2. ^ International notes Earthquake Disaster - Luzon, Philippines

This is the example of eruption warning The Philippine Institute of Volcanology and Seismology (Filipino: Suriang Pilipino ng Bulkanolohiya at Sesmolohiya, abbreviated as PHILVOLCS) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes and tsunamis, as well as other specialized information and services primarily... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 197th day of the year (198th in leap years) in the Gregorian calendar. ...

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