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 Samar Province PDF Print
Thursday, 02 July 2015 15:13

A six-day REDAS training entitled “Mainstreaming Disaster Risk Reduction into the Local Development Planning Process, Contingency Planning and Emergency Preparedness through the use of the REDAS software” was conducted by PHIVOLCS, supported by Plan International Inc. and the Provincial Government of Samar last June 15-20, 2015 at Ciriaco Hotel and Resort, Calbayog City, Samar. A total of 50 participants attended while 48 REDAS license keys were issued. Participants came from Catbalogan City as well as from 19 Samar municipalities of Almagro, Basey, Calbiga, Daram, Gandara, Hinabangan, Marabut, Matuguinao, Motiong, Pagsanghan, Pinabacdao, San Jorge, San Juan de Buan, Santa Rita, Santo Niño, Tagapul-an, Tarangnan, Villareal and Zumarraga. There were also attendees from the municipality of Llorente in Eastern Samar, Plan International Inc. and Eastern Visayas State University (EVSU).

Participants were trained on how to use basic REDAS, SQLite, Spatialite as relational database, as well as Quantum GIS. The training highlight is the teaching of the Seismic Hazard Assessment module and the impact estimation using a scenario earthquake. The participants were also taught how to display their multi-hazard maps and use GPS for risk database building in REDAS software.

For the very first time, the Exposure Database Module Android version was released by the PHIVOLCS Deputy Director Bartolome C. Bautista, which was installed in more than 30 android cellular phones and tablets where they also use during the fieldwork.

Speakers and facilitators in the training were led by Deputy Director Bautista, Dr. Maria Leonila P. Bautista, Engr. Angelito G. Lanuza, Dr. Rhommel N. Grutas, Engr. Myra P. Dolina, Abigail A. Polintan, Lawrence Aaron Bañes, Robjunelieaaa Lim, Roschele G. Ablan, Bhenz Rodiguez, and Lara Jennina A. Gianan. Mr. Fileon Corona of PAGASA also gave a talk about hydrometeorological hazards.

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.


BULUSAN VOLCANO BULLETIN 30 August 2015 8:00 A.M. PDF Print
Sunday, 30 August 2015 06:08

Bulusan Volcano’s seismic monitoring network did not detect any volcanic earthquake during the past 24 hours. Steaming activity was not observed due to thick clouds covering the summit. Precise leveling surveys on July 22-27, 2015 indicated very slight deflation of the volcano’s edifice relative to June 2015 surveys.

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.

REDAS Training for Batanes province PDF Print
Thursday, 02 July 2015 15:12

A REDAS training, entitled “The Provision and Training on the Use of Rapid Earthquake Damage Assessment System (REDAS) Softwareto the Province of Batanes as a Tool for Mainstreaming Disaster Risk Reduction into the Local Development Planning Process, Contingency Planning and Emergency Preparedness”, was conducted by PHIVOLCS for the province of Batanes last May 04 – 08, 2015 at Provincial Capitol, Basco, Batanes. A total of 49 participants participated and succesfully completed the training. Participants were composed of instructors, engineers, planners, barangay captains, and barangay kagawads among others from Batanes Provincial Government Offices, municipalities of Itbayat, Sabtang, Uyugan and Mahatao, Batanes State College, BATANELCO, NHA and Chanarian Elementary School. A total of 42 license keys was issued at the training. This training was organized by the Batanes State College (BSC) and the Batanes Provincial Government.

The participants were taught how to use REDAS software and how they can apply it in their own municipalities and cities for mainstreaming disaster risk reduction efforts into local development, contingency planning and emergency preparedness. The participants were introduced to the use of SQlite, Spatialite and Quantum GIS and how these are linked into REDAS to prepare their risk database and ultimately, to compute for earthquake impacts. They were taught how to display their multi-hazard maps, administrative and base maps. They were also taught how to simulate different earthquake scenarios and calculate impact assessment using the software. They also had GPS field work where they were able to locate and classify different types of buildings. The participants were also taught how to answer the Exposure Database Module (EDM) for a more comphrensive exposure database collection. They were also asked to answer the form on Mainstreaming Hazard Assessment on Land Use Planning where the answers were culled from the display of hazard maps vis a vis the location of risk data. A plenary session facilitated by Ms. Lenie Duran-Alegre from Office of Civil Defense (OCD) and Engr. Angelito G. Lanuza, where the participants’ answers were discussed.

Mr. Sancho A. Mabborang, Assistant Regional Director of DOST PSTC Region 2, Mr. Richard Cantero, Community Affairs Officer and representative of Gov. Vicente D. Gato, Mr. Rolando Donato, Director of Instruction of BSC and Ms. Jessica Salamagos, the PDRRMO of Batanes province were the speakers for the opening ceremony of the training. Dr. Bartolome Bautista, Deputy Director of PHIVOLCS and the developer of REDAS software, was the guest speaker for the opening and closing ceremony. Speakers and trainers were Deputy Director Bartolome C. Bautista, Lenie Duran-Alegre of OCD, Maria Leonila P. Bautista, Angelito G. Lanuza, Henremagne Peñarubia, Analyn Aquino, Jayvie Nadua, Abigail Polintan, Maria Concepcion Barairo, Karen Garcia, Roschele Ablan, Anne Lorraine Delos Santos, Jhonlayn Blacer of Batanes Seismic Station, Robert Quinto from PAGASA and Ricardo Cabugao, Jr. from BSC.

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