Philippine Institute of Volcanology and Seismology
Taal Volcano Bulletin 19 June 2013 8:00 A.M. PDF Print
Wednesday, 19 June 2013 07:42

Taal Volcano’s (14.0000°N, 120.9833°E) seismic network recorded one (1) volcanic earthquake during the past 24-hour observation period. Field measurements last 13 June 2013 at the western sector of the Main Crater Lake yielded a slight decrease in water temperature of 32.5°C from 33.2°C, increase in water level of 0.25 meter from 0.24 meter, and water acidity remained at pH 3.03.  Ground deformation survey in the Volcano Island on 23 May-01 June 2013 denoted slight deflation at Calauit, Alas-as, Pira-piraso, Daang Kastila and New Eruption Site precise leveling lines compared to the February 2013 survey.  However, GPS data for the period of October 2012 to first week of May 2013 show inflationary changes in ground deformation while the edifice is still slightly inflating in general compared to February 2011 baseline data. Carbon dioxide (CO2) emission at the Main Crater Lake increased to 947 tonnes per day on 03 March 2013 compared to 720 tonnes per day last 27 November 2012.

Alert Level 1 remains in effect over Taal Volcano. This means that hazardous eruption is not imminent. The public, however, is reminded that the Main Crater should be strictly off-limits because sudden steam explosions may occur and high concentrations of toxic gases may accumulate. The northern portion of the Main Crater rim, in the vicinity of Daang Kastila Trail, may also become hazardous when steam emission along existing fissures suddenly increases.  Furthermore, the public is also reminded that the entire Volcano Island is a Permanent Danger Zone (PDZ), and permanent settlement in the island is strongly not recommended.


PHIVOLCS Conducts REDAS Training for Iloilo Province PDF Print
Friday, 06 November 2015 13:54

The training entitled “Mainstreaming Disaster Risk Reduction into the Local Development Planning Process, Contingency Planning and Emergency Preparedness through the Use of the REDAS Software for the Province of Iloilo” was conducted by PHIVOLCS last October 25-30, 2015 in Iloilo City. This training was supported by the Hazard Mapping and Assessment for Effective Community-Based Disaster Risk Management (READY) Project funded by the United Nations Development Programme (UNDP) and Australian Agency for International Development (AusAID).

There was a total of 65 participants from 33 Iloilo municipalities of Ajuy, Anilao, Badiangan, Balasan, Banate, Barotac Viejo, Batad, Bingawan, Cabatuan, Calinog, Carles, Concepcion, Dueñas, Dumangas, Guimbal, Igbaras, Janiuay, Lambunao, Leganes, Lemery, Leon, Maasin, Mina, New Lucena, Oton, Pototan, San Joaquin, San Rafael, Santa Barbara, Sara, Tigbauan, Tubungan and Zarraga including Iloilo City and from the Provincial Government of Iloilo.  Guest participants came from NEDA VI, HLURB VI, OCD VI, PDRRMO-Capiz and PDRRMO-Aklan. The participants were composed of Disaster Managers, Planning Officers, Engineers, IT specialists and others. A total of 62 license keys was issued during the said training. 
The first day of the training served for the introduction of PHIVOLCS, speakers and facilitators, REDAS software, and the Earthquake and Tsunami Alerting Tool (ETAM). In addition, installation of the softwares Exposure Database Module (EDM), Sqlite and Quantum GIS, ETAM and the EDM and MyTracks in android devices was conducted. The following days of the training served for lectures where the participants were taught how to build their own risk database, to determine the maximum credible earthquake in their area, and to conduct earthquake risk assessment, among others.

Iloilo PDRRMC Executive Director Jerry Bionat gave the welcoming and closing remarks for the training. Dr. Bartolome C. Bautista also gave his message during the closing ceremony, along with impressions from representatives of Igbaras and Carles municipalities and the province ICT Office. The speakers and facilitators in the training were Bartolome C. Bautista, Maria Leonila P. Bautista, Winchelle Ian Sevilla, Rhommel N. Grutas, Raymond P. Maximo, Ruffy R. Villanueva, Dave Andrei V. Rivera,  Greggue Ann Lyza T. Castro, Paula Grace V. Baylon, Ramil B. Atando and Jo Arlu Sabar, all from PHIVOLCS, and Robert Z. Quinto from PAGASA.

Photos show exposure database collection survey using GPS, laptops and android devices:

KANLAON VOLCANO BULLETIN 30 August 2016 08:00 A.M. PDF Print
Tuesday, 30 August 2016 07:43

Kanlaon Volcano’s seismic monitoring network recorded four (4) volcanic earthquakes during the past 24 hours. No steaming activity was observed during times when the summit crater was visible. Ground deformation data from continuous GPS measurements as of 1 August 2016 indicated slight inflation of the Kanlaon edifice since December 2015.

Alert Level 1 status remains in effect over Kanlaon Volcano, which means that it is currently in a state of unrest probably driven by hydrothermal processes that could generate more minor eruptions. The local government units and the public are reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the further possibilities of sudden and hazardous steam-driven or minor ash eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as airborne ash from a sudden eruption can be hazardous to aircraft. DOST-PHIVOLCS is closely monitoring Kanlaon Volcano’s activity and any new development will be relayed to all concerned.

Wednesday, 24 August 2016 16:13

The Philippine Institute of Volcanology and Seismology – Department of Science and Technology (PHIVOLCS-DOST) commemorated the 1976 Moro Gulf Earthquake and Tsunami on its 40th year through series of activities held in Zamboanga City.  A School Fair exhibit was held at Don Pablo Lorenzo Memorial High School, Gov. Ramos Avenue, Brgy. Sta. Maria, Zamboanga City last August 18 and 19, 2016.


PHIVOLCS aims to promote geologic hazard awareness and preparedness among the students. The exhibit featured a Tsunami Wave Tank Model, 3D Models – Planet Earth, Philippine Relief Map, Subduction Zone), and die-cut figure of Duck/drop, cover, and hold. PHIVOLCS staffs discussed about earthquake, tsunami, and its hazards, and preparedness to the students. “Tales of Disaster”, a video promoting preparedness, and the stories of the survivors of the 1976 Moro Gulf Earthquake and Tsunami were also shown.


Continue reading..PHIVOLCS commemorates the 1976 Moro Gulf
MAYON VOLCANO BULLETIN 19 June 2013 8:00 A.M. PDF Print
Wednesday, 19 June 2013 07:43

Mayon Volcano’s (13.2500°N, 123.6833°E) seismic network did not detect any volcanic earthquake during the past 24-hour observation period. Steaming activity was not observed due to thick clouds covering the summit crater. No crater glow was observed last night. Sulfur dioxide (SO2) emission on 14 June 2013 was measured at an average of 133 tonnes/day. Ground deformation survey (precise levelling) on the third week of May 2013 showed slight inflation of the edifice compared to February 2012, with the volcano still slightly inflated compared to January 2010 baselines.

Mayon Volcano’s alert status remains at Alert Level 1, which means that it is at abnormal condition.  Although this means that presently no magmatic eruption is imminent, it is strongly advised that the public refrain from entering the 6-kilometer radius Permanent Danger Zone (PDZ) due to the perennial life-threatening dangers of rockfalls, landslides/avalanches at the middle to upper slope, sudden ash puffs and steam-driven or phreatic eruptions from the summit. Active stream/river channels and those identified as perennially lahar-prone areas on all sectors of the volcano should also be avoided especially during extreme weather conditions when there is heavy and prolonged rainfall. DOST-PHIVOLCS maintains its close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.


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