Tuesday, 21 June 2016 10:40

Stakeholder's Notice

As the agency mandated to monitor and study earthquakes, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) encourages everyone to participate in the 2nd quarter National Simultaneous Earthquake Drill (NSED) and the 2nd annual Metro Manila Shake Drill on June 22 at 9 in the morning. PHIVOLCS pushes for the continued promotion of Earthquake awareness and preparedness since it introduced the conduct of earthquake drills in schools way back 2002.

In Quezon City Main Office, PHIVOLCS will participate in the Earthquake Drill to show its support to the Pagyanig 2016 and MM Shake Drill, and to encourage everyone not only to join the drill but also to increase their knowledge about Earthquakes, their hazards and how to prepare for them.

The Earthquake Drill will simulate a Magnitude 7.2 earthquake from the West Valley Fault. At 9:00 AM, radio stations will be sounding the earthquake alert which will signal the start of the drill. Participants would do the duck, cover, and hold technique and will evacuate to the designated evacuation areas. Possible earthquake scenarios will be staged to show and test the disaster response plan such as the National Disaster Response Plan and the Oplan Metro Yakal Plus.‪ #‎Pagyanig‬ ‪#‎MMShakeDrill

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PHIVOLCS conducts REDAS Training for its Staffs
Monday, 13 June 2016 09:12

PHIVOLCS conducted a five-day training entitled "Capacity Enhancement of PHIVOLCS Staffs on Hazard, Risk, and Exposure Database Development through the Use of the REDAS Software" from May 23 – 27, 2016 for PHIVOLCS staffs. The training was held at the Auditorium, PHIVOLCS, Quezon City. The goal of the training was to provide and familiarize the participants with the capability of the REDAS Software, especially the modules which are designed to be used for risk assessment.  The training also aims to equip PHIVOLCS staffs with knowledge and skills that can help them facilitate future REDAS trainings.

There was a total of 44 participants during the training. Twenty-five (25) of them are from the SOEPD, 15 from the GGRDD, 3 from VMEPD and one from GDAPD. The participants were provided with REDAS version 2.8Y which was later upgraded to REDAS 2.8Z before the training ended. A total of 39 REDAS software license keys was issued during the said event.

Group Picture of the REDAS PHIVOLCS 2016 Participants

Continue reading PHIVOLCS conducts REDAS Training for its Staffs
Friday, 10 June 2016 12:35

Bulusan Volcano (12.7667°N, 124.0500°E) generated a steam-driven explosion at 11:35 AM today. The event lasted for approximately 5 minutes based on the seismic record and produced approximately 2.0 kilometer-high grayish ash plume that drifted towards the northwest.

Bulusan Volcano Eruption: 10June2016 #BulusanVolcano

Alert Level 1 (abnormal) remains in effect over Bulusan Volcano. This indicates that hydrothermal processes are underway beneath the volcano that may lead to more steam-driven eruptions. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ash from any sudden phreatic eruption can be hazardous to aircraft. Furthermore, people living within valleys and along river/stream channels especially on the southwest and northwest sector of the edifice should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s condition and any new development will be relayed to all concerned.


Thursday, 09 June 2016 12:56

The Philippine Institute of Volcanology and Seismology – Department of Science and Technology (PHIVOLCS-DOST) enjoins the nation in commemorating the 1991 Pinatubo Eruption on its 25th anniversary this June 2016.

1991 Pinatubo volcano eruptionNine months after the catastrophic 16 July 1990 M7.8 Luzon Earthquake, Pinatubo ended about 400 years of quiescence on 2 April 1991 with a series of steam-driven eruptions from vents in its upper flanks. This was followed in quick succession by the sighting of a lava intrusion on 7 June and powerful explosive eruptions that began on 12 June and culminated climactically on 15 June. The paroxysm of 15 June propelled a 40 kilometer-high Plinian eruption column with a massive umbrella cloud that blanketed ash over 2,000 square kilometers of land in Luzon. Ash rained further across 4 million square kilometers of the South China Sea and Southeast Asia. Thick ashfall, soaked and made heavier by the passage of Typhoon Yunya (local name Diding), caused major infrastructural and roof collapse damages in the adjoining provinces of Zambales, Pampanga and Tarlac that straddle Pinatubo. Airborne volcanic ash paralyzed aviation in East Asia for days. Deadly pyroclastic flows, high-velocity mixtures of hot gas, fragmented rock and ash, rushed down all sides of the summit to distances of 16 kilometers, burying major river valleys in hundred meters of hot volcanic debris. These would sooner and later spawn secondary explosions and far-reaching hazardous lahars across five major river systems draining the volcano during heavy and prolonged rains. After the climactic eruption, discrete but minor explosions occurred until September 1991. From July to September 1992, a lava dome was quietly erupted within the newly-formed, 2.5 kilometer-diameter summit caldera. A large caldera lake would soon evolve and break out a decade later. By the end of the 1991 unrest, a total of 5.5 cubic kilometers of magma had been discharged, and Pinatubo’s eruption would become the second largest in the 20th century.

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