DRR LAS 11 (VOLCANO HAZARD MAPS)

• VOLCANO HAZARD MAPS shows an aerial view of the areas on the ground that could be affected by volcanic activity DURING AND AFTER an ERUPTION.
• Why are Volcanic Hazard Maps developed?


  So that those who are responsible for the PEOPLE AT RISK would be INFORMED about the dangers that would be brought about by a volcanic eruption.
• A volcano may have a DIFFERENT SET OF HAZARD from another volcano depending on the.

  hazards it generate
• Mayon Volcano may not have a...

  Base Surge Hazard Map
• Taal Volcano may not have a

  Pyroclastic Flow Hazard
• Mayon is a stratovolcano.
• Taal is a caldera volcano
• Stratovolcanoes have relatively steep sides and are more cone-shaped than shield volcanoes.
• A caldera is a depression created after a volcano releases the majority of the contents of its magma chamber in an explosive eruption.
• The Hazard Profile of Mayon Volcano released by UN OCHA shows 6 (six) hazard maps.
• 4 Hazard Maps of Mayon Volcano?? (DOST PHIVOLCS)

  1. Lahar
  2. Ash Fall
  3. Lava Flow
  4. Pyroclastic Flow
• 2 Hazard Maps of Mayon Volcano?? (MGB)

  1. Floods
  2. Landslides
• The darker the shade the greater the....


  danger of the hazard of the particular area
• The lighter the shade the lesser the

  danger to the area
• DOST PHIVOLS (Department of Science and Technology - Philippine Institute of Volcanology and Seismology )
• MGB (Mines and Geosciences Bureau)
• Emergency Response Coordination Center (ERCC)
• European Commission's Directorate-General for European Civil Protection and Humanitarian Aid Operations (DG ECHO)
• The volcano island shown with the ACTIVE VENT is designated as a Permanent Danger Zone
• The are in gray is the BUFFER ZONE which is 1-KM aerial distance from the danger zone limits.
• VOLCANIC ALERT SIGNALS- Volcanologists use alert signals that range from 0 to 5 to indicate the STATUS of an active volcano.
• Alert levels guide the officials of the Local Government Units (LGU'S) so that they can make necessary preparations from EVACUATION, RESCUE, AND RELIEF OPERATIONS in response to the possible hazards that will happen during a volcanic eruption
• ALERT LEVELS

  0 - No Alert

  1 - Abnormal

  2 - Increasing unrest

  3 - Increasing tendency towards hazardous eruption