Thursday, August 29, 2019

Earthquake preparedness in the Philippines

The safety and wellbeing of your loved ones are important, so take time NOW to develop a family earthquake preparedness plan. If you have already developed a plan, take time to review and update it. Below is a sample plan that you can use for your family.

For the past two decades, geological reports referred to a major earthquake that will rip off Metro Manila through the fault line starting from Mari

What to do DURING an Earthquake: 

1. If you are inside a structurally sound building, stay there.

  • Protect your bodies from falling debris by bracing yourself in doorway or by getting under a sturdy desk or table.

2. If you are outside, move to an open area.

  • Get away from power lines, posts, walls and other structures that may fall or collapse.
  • Stay away from buildings with glass panes.
  • If you are on a mountain or near steep hill slope, move away from steep escarpments which may be affected by landslide.

 3. When driving a vehicle, pull to the side of the road and stop.

  • Do not attempt to cross bridges or overpass which may have been damaged.
  • If you are along the shore and you feel a very strong earthquake, strong enough to make standing difficult, it is always safest to assume that tsunami (giant sea waves) has been triggered. Run away from the shore toward higher ground.
  • Make it habit to turn of gas tanks when not in use.  

What to do AFTER an Earthquake:  

1. If you are inside an old, weak structure, take the fastest and safest away out! 

  • Do not rush to the exit; get out calmly in an orderly manner.
  • Do not use elevators, use the stairs.
  • Check yourself and others for injuries.  

2. Help reduce the number of casualties from the earthquake. 

  • Don't enter partially damage buildings; strong aftershocks may cause these collapse
  • Gather information and disaster prevention instructions from battery-operated radios.
  • Obey public safety precaution.  

 3. Check your Surroundings. 

  • Clean-up chemical spills, toxic and flammable materials to avoid any chain of unwanted events.
  • Check for fire and if any, have it controlled.
  • Check your water and electrical lines for defects, if any damage is suspected, turn the system off in the main valve or switch.  

4. Unless you need emergency help,: 

  • Do not use your telephone to call relatives and friends. Disaster prevention authorities may need the line for emergency communication.
  • Do not use your car and drive around areas of damage, rescue and relief operations need the roads for mobility.

5. If you must evacuate your residence, leave a message stating where you are going.

  • Take with you your earthquake survival kit, which should contain all necessary items for your protection and comforts.

To be effective, they must be done before earthquakes occur. Preparing for earthquakes involves 1) Learning what employers should do before, during and after earthquakes; 2) Doing or preparing to do those things now, before the next quake; 3) Workplace preparedness requires the participation of owners, managers and workers, as well as those who design, build, regulate and maintain buildings used as workplaces. The following are activities that can be undertaken now.

Keeping your family safe before, during, and after an earthquake requires proper planning. We hope this guide will provide you the foundation necessary to protect your family and home in the face of a disaster.

Tuesday, July 2, 2019

Magnitude 6.1 quake rocks Luzon

The epicenter of the quake, which occurred at 5:11 p.m., was located at 18 kilometers northeast of Castillejos, Zambales, according to Science Undersecretary and Philippine Institute of Volcanology and Seismology (Phivolcs) director Renato Solidum Jr.

The quake sent people spilling into the streets from swaying high-rise buildings in Metro Manila. Damage to Clark International Airport in Pampanga prompted a 24-hour closure of the facility.

Rescuers rushed to find survivors as some 100 shoppers were feared buried in a supermarket in Pampanga that collapsed after a magnitude 6.1 earthquake struck Metro Manila and parts of Luzon late yesterday afternoon.

Blackout hit wide areas of Pampanga amid reports of damage to facilities of local electric cooperatives.

A concrete boundary arc across the MacArthur highway between Pampanga and Bataan also collapsed, rendering the highway impassable to all vehicles for at least an hour until the debris was cleared.

A major earthquake has a magnitude of 7 and above.

The tremor was felt at intensity 5 – classified as strong – in San Felipe, Zambales; Abucay, Bataan; Magalang, Pampanga; Malolos and Obando, Bulacan; Quezon City; Manila; Valenzuela City; and Lipa City, Batangas.

The shaking was also felt at intensity 4 – moderately strong – in Caloocan City; Las Piñas City; Makati City; Marikina City; Pasig City; Meycauayan and San Jose del Monte, Bulacan; Floridablanca, Pampanga; Villasis, Pangasinan; Tagaytay City and Baguio City.

Residents of Muntinlupa City; Dasmariñas, Indang and General Trias, Cavite; Lucban, Quezon; and Cabanatuan City, Palayan City, Gapan City, Santo Domingo and Talavera, Nueva Ecija also felt the tremor at intensity 3, which is classified as weak.

It was slightly felt at intensity 2 in Baler, Aurora.

Phivolcs’ instruments also recorded the quake at intensity 5 in Angeles City, Pampanga and Malolos, Bulacan; intensity 4 in Quezon City; San Juan City; Pasig City; Muntinlupa City; Gapan City and Cabanatuan City, Nueva Ecija; Tagaytay City; and San Ildefonso, Bulacan; intensity 3 in Mauban, Quezon; Talisay, Batangas; Guagua, Pampanga; and Olongapo City; Intensity 2 in Lucena City; Dolores and Lucban, Quezon; Dagupan City; and Daet, Camarines Norte; and intensity 1 in Guinayangan, Quezon; Calatagan, Batangas; Magalang, Pampanga and Sinait, Ilocos Sur.

Civil Aviation Authority of the Philippines (CAAP) director general Jim Sydiongco reported last night that the Clark control tower sustained a broken glass panel, resulting in the tower not being utilized while it awaited full damage assessment.

There were also reports that the Clark passenger terminal building incurred damage, according to Sydiongco.

No damage, however, was sustained by the airport’s runway.

Monday, September 3, 2018

A magnitude 5.2 earthquake struck Occidental Mindoro

The tremor hit at 10:40 p.m., some 16 kilometers northwest of Abra de Ilog town.

Phivolcs also recorded instrumental intensity 4 in the towns of Calatagan in Batangas and Puerto Galera and instrumental intensity 2 in Calapan in Oriental Mindoro, Bacoor in Cavite, Las Pinas City, Muntinlupa City, San Jose in Occidental Mindoro, and Olongapo City.

Meanwhile, instrumental intensity 1 was recorded in Gumaca in Quezon, Marikina City, San Juan City, Quezon City, San Ildefonso and Malolos in Bulacan, and Guagua in Pampanga.

The tremor is forecast to trigger aftershocks but it is not expected to cause any damage.

A magnitude 5.2 earthquake struck Occidental Mindoro province late Friday night, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.

Phivolcs said it was tectonic in origin and struck at a depth of 112 kilometers.

Intensity 4, which may feel like the passing of heavy truck and may cause hanging objects to swing considerably, was felt in Abra de Ilog and Puerto Galera in Oriental Mindoro.

Intensity 3, which may feel like vibration from the passing of a light truck, was felt in Pasig City and Quezon City in Metro Manila.

Tuesday, April 4, 2017

Magnitude 5.4 Earthquake recorded.

As of  08:58:00 PM, 04 Apr 2017 @
Magnitude 5.4 Earthquake recorded.
13.71°N, 120.83°E - 007 km N 37° W of Tingloy (Batangas)
Tectonic in Origin
with 003km of depth

Reported Intensities     :
Intensity IV - Makati City, Obando, Bulacan
Intensity III - Mandaluyong City, Quezon City, Gen. trias & Dasmarinas, Cavite, Santa Ana, Manila,
Lucena City, Quezon
Intensity II - Talisay, Batangas; Pasig City

Earthquake Bulletins of latest seismic events in the Philippines are listed below (last 2 hours) The event parameters (hypocenter, time and magnitude) are determined using incoming data from the Philippine National Seismic Network  Philippine Standard Time (PST) is eight hours ahead of Coordinated Universal Time (UTC). (PST = UTC + 8H) UTC is the time standard for which the world regulates clocks and time. Earthquakes in this list with their date and time in blue have reported and recorded intensities. Intensity ratings are based on the PHIVOLCS Earthquake Intensity Scale.

Date - Time
(Philippine Time)


010 km N 39° E of Tingloy
010 km N 24° E of Tingloy
007 km East of Tingloy
007 km N 37° W of Tingloy
003 km N 76° E of Castilla
005 km N 61° E of Castilla

Tuesday, February 14, 2017

The Big One

The West Valley Fault, Solidum said, moves roughly every 400 years. The last major earthquake generated by this fault was in 1658 or 357 years ago.

“Everyone must learn from the recent effects of the magnitude 6.7 earthquake in Surigao del Norte. If a similar event happens in a highly urbanized area, the effects can be more devastating,” Phivolcs director Renato Solidum warned.
Residents of Metro Manila and nearby provinces should prepare for the “Big One,” a magnitude 7.2 earthquake to be generated by the West Valley Fault, which is ripe for movement.

The 100-kilometer fault traverses parts of Bulacan through Quezon City, Marikina, Makati, Pasig, Taguig and Muntinlupa in Metro Manila; San Pedro, Biñan, Sta. Rosa, Cabuyao and Calamba in Laguna; and Carmona, General Mariano Alvarez and Silang in Cavite.

A 2004 study funded by the Japan International Cooperation Agency for Phivolcs and the Metropolitan Manila Development Authority showed that the magnitude 7.2 quake could kill up to 34,000 people and injure 100,000 others due to collapsed buildings.

Solidum explained that the movement of the Philippine Fault (Surigao segment) would not trigger the movement of faults farther like the West Valley Fault.

Phivolcs continued to record aftershocks from the magnitude 6.7 quake that hit Surigao last Friday night, killing at least eight people and injuring hundreds.

More than 150 aftershocks have been recorded as of yesterday morning, Phivolcs said.

At 3:51 a.m. yesterday, an aftershock of magnitude 4.1 struck Surigao. It was reportedly felt at Intensity 3 in the city.

Phivolcs earlier warned the public to brace for more aftershocks from the magnitude 6.7 quake that could collapse already damaged structures.

Eastern Mindanao, including Surigao del Norte, is one of the earthquake prone areas in the country because of the Philippine Fault and Philippine Trench.

Amid the devastation caused by the magnitude 6.7 earthquake in Surigao, the Philippine Institute of Volcanology and Seismology (Phivolcs) yesterday appealed to residents of Metro Manila and nearby provinces to prepare for a powerful earthquake that could kill thousands.

“Everyone must learn from the recent effects of the magnitude 6.7 earthquake in Surigao del Norte. If a similar event happens in a highly urbanized area, the effects can be more devastating,” Phivolcs director Renato Solidum warned.

State seismologists have repeatedly warned the public that the West Valley Fault is ripe for movement.

Monday, April 25, 2016


An earthquake is the perceptible shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes can be violent enough to toss people around and destroy whole cities. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.

Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter magnitude scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.

At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.

In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.

Tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane. The sides of a fault move past each other smoothly and aseismically only if there are no irregularities or asperities along the fault surface that increase the frictional resistance. Most fault surfaces do have such asperities and this leads to a form of stick-slip behavior. Once the fault has locked, continued relative motion between the plates leads to increasing stress and therefore, stored strain energy in the volume around the fault surface. This continues until the stress has risen sufficiently to break through the asperity, suddenly allowing sliding over the locked portion of the fault, releasing the stored energy. This energy is released as a combination of radiated elastic strain seismic waves, frictional heating of the fault surface, and cracking of the rock, thus causing an earthquake. This process of gradual build-up of strain and stress punctuated by occasional sudden earthquake failure is referred to as the elastic-rebound theory. It is estimated that only 10 percent or less of an earthquake's total energy is radiated as seismic energy. Most of the earthquake's energy is used to power the earthquake fracture growth or is converted into heat generated by friction. Therefore, earthquakes lower the Earth's available elastic potential energy and raise its temperature, though these changes are negligible compared to the conductive and convective flow of heat out from the Earth's deep interior.

Friday, March 4, 2016

Earthquake to hit the Philippines

Our economic welfare is concentrated in very few highly populated areas. We experience more than 10,000 earthquakes every year. Most earthquakes are very small and do not impact us at all. But now and then there are big ones, and then every number of years there are really devastating earthquakes.. We expect a major quake will hit our beautiful country sometime in the next 10 years. In order to reduce the loss of life and protect our economic investments during an earthquake, it is essential to install advanced stand-alone warning systems.

There will be a devastating Earthquake to hit the Philippines. According to a JICA Study, there will be more than 40,000 casualties, more than 200,000 injured victims, more than 100,000 buildings and structures will be damaged and billions of pesos will be lost.

People freeze during an earthquake. They cannot take quick and essential decisions. They panic. Taking control or command is hard, if not, impossible. Immediate intervention and action is vital to prevent secondary disasters. With real-time warning systems we can automatically stop critical equipment, guide people for safety and inform public about the situation.

There is an available technology to provide you with these solutions. Ask us to learn more about IMV JPN-1052 Seismic Accelerograph

JPN-1052 Seismic Accelerograph continuously monitors and records ground movement. It has a Tri-Axial Servo-Type Sensor, the most advanced, most precise and most reliable sensor available in the market. The machine gives out and records real time Ground Movement Acceleration values in units of Gal, real time Modified Mercalli Seismic Intensity and SI Value - Velocity Response Spectrum.

Measuring invisible vibration. Most vibrations can't be seen by the human eye. IMV develops our own sensors to continuously measure and monitor vibrations and movements to safeguard structures, equipment, assets, investments and most importantly - people.  

The machine provides immediate alarm annunciation to ensure that the building occupants can be moved to safety, it is used to set off alarms at specifed ground movement levels.

The use of this equipment eliminates unnecessary evacuation during earthquake events. It also assures people that the structure is safe and there is no need to panic.

The 10-output alarm and shut off feature can be utilized to achieve an ultra efficient and highly advanced building management. Each channel can be adjusted to have its own preset acceleration level which can trigger automatic switch off for utilities such as elevators, LPG lines, electricity ines, water lines, automatic doors, airconditioning cooling towers, etc, to prevent secondary disasters as well as take care of of your important and sensitive equipment.

The seismic monitor can also be connected to the building's BMS and FDAS. The machine can also activate pre-recorded voice commands to guide and assure tenants during emergency situations utilizing the building's Public Announcement System.

JPN-1052 Seismic Accelerograph continuously monitors and records all ground movement in relation to the structural integrity of a building, thus giving you essential, specific and actual data which a designated professional can use in his/her analysis and evaluation of the structure after any earthquake or ground movement event.

This provides faster evaluations to allow quicker decisions by stakeholders and persons-in-charge after major earthquake events.